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Message-Id: <1381871068-27660-9-git-send-email-dave.long@linaro.org>
Date: Tue, 15 Oct 2013 17:04:23 -0400
From: David Long <dave.long@...aro.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: Rabin Vincent <rabin@....in>,
"Jon Medhurst (Tixy)" <tixy@...aro.org>,
Oleg Nesterov <oleg@...hat.com>,
Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/13] ARM: use a function table for determining instruction interpreter actions
From: "David A. Long" <dave.long@...aro.org>
When interpreting instructions use a client-supplied array of functions
to take action. This array can then be provided by krpobes, uprobes, or
possibly some other client subsystem. The interpreter assigns a group
number to each recognized instruction and invokes the corresponding action
function.
Signed-off-by: David A. Long <dave.long@...aro.org>
---
arch/arm/kernel/Makefile | 2 +-
arch/arm/kernel/kprobes-arm.c | 41 ++
arch/arm/kernel/kprobes-common.c | 3 +-
arch/arm/kernel/kprobes-thumb.c | 1016 ++++----------------------------------
arch/arm/kernel/kprobes.c | 10 +-
arch/arm/kernel/kprobes.h | 14 +-
arch/arm/kernel/probes-arm.c | 114 ++---
arch/arm/kernel/probes-arm.h | 37 ++
arch/arm/kernel/probes-thumb.c | 875 ++++++++++++++++++++++++++++++++
arch/arm/kernel/probes-thumb.h | 136 +++++
arch/arm/kernel/probes.c | 9 +-
arch/arm/kernel/probes.h | 15 +-
12 files changed, 1288 insertions(+), 984 deletions(-)
create mode 100644 arch/arm/kernel/probes-thumb.c
create mode 100644 arch/arm/kernel/probes-thumb.h
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index cdfcb6a..2fe6139 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -51,7 +51,7 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o insn.o patch.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_KPROBES) += probes.o kprobes.o kprobes-common.o patch.o
ifdef CONFIG_THUMB2_KERNEL
-obj-$(CONFIG_KPROBES) += kprobes-thumb.o
+obj-$(CONFIG_KPROBES) += kprobes-thumb.o probes-thumb.o
else
obj-$(CONFIG_KPROBES) += kprobes-arm.o probes-arm.o
endif
diff --git a/arch/arm/kernel/kprobes-arm.c b/arch/arm/kernel/kprobes-arm.c
index 1623082..2fe1f47 100644
--- a/arch/arm/kernel/kprobes-arm.c
+++ b/arch/arm/kernel/kprobes-arm.c
@@ -300,3 +300,44 @@ emulate_rdlo12rdhi16rn0rm8_rwflags_nopc(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rdhi] = rdhiv;
regs->ARM_cpsr = (regs->ARM_cpsr & ~APSR_MASK) | (cpsr & APSR_MASK);
}
+
+const union decode_item kprobes_arm_actions[] = {
+ [PROBES_EMULATE_NONE] = {.handler = kprobe_emulate_none},
+ [PROBES_SIMULATE_NOP] = {.handler = kprobe_simulate_nop},
+ [PROBES_PRELOAD_IMM] = {.handler = kprobe_simulate_nop},
+ [PROBES_PRELOAD_REG] = {.handler = kprobe_simulate_nop},
+ [PROBES_BRANCH_IMM] = {.handler = simulate_blx1},
+ [PROBES_MRS] = {.handler = simulate_mrs},
+ [PROBES_BRANCH_REG] = {.handler = simulate_blx2bx},
+ [PROBES_CLZ] = {.handler = emulate_rd12rm0_noflags_nopc},
+ [PROBES_SATURATING_ARITHMETIC] = {
+ .handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_MUL1] = {.handler = emulate_rdlo12rdhi16rn0rm8_rwflags_nopc},
+ [PROBES_MUL2] = {.handler = emulate_rd16rn12rm0rs8_rwflags_nopc},
+ [PROBES_SWP] = {.handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_LDRSTRD] = {.handler = emulate_ldrdstrd},
+ [PROBES_LOAD_EXTRA] = {.handler = emulate_ldr},
+ [PROBES_LOAD] = {.handler = emulate_ldr},
+ [PROBES_STORE_EXTRA] = {.handler = emulate_str},
+ [PROBES_STORE] = {.handler = emulate_str},
+ [PROBES_MOV_IP_SP] = {.handler = simulate_mov_ipsp},
+ [PROBES_DATA_PROCESSING_REG] = {
+ .handler = emulate_rd12rn16rm0rs8_rwflags},
+ [PROBES_DATA_PROCESSING_IMM] = {
+ .handler = emulate_rd12rn16rm0rs8_rwflags},
+ [PROBES_MOV_HALFWORD] = {.handler = emulate_rd12rm0_noflags_nopc},
+ [PROBES_SEV] = {.handler = kprobe_emulate_none},
+ [PROBES_WFE] = {.handler = kprobe_simulate_nop},
+ [PROBES_SATURATE] = {.handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_REV] = {.handler = emulate_rd12rm0_noflags_nopc},
+ [PROBES_MMI] = {.handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_PACK] = {.handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_EXTEND] = {.handler = emulate_rd12rm0_noflags_nopc},
+ [PROBES_EXTEND_ADD] = {.handler = emulate_rd12rn16rm0_rwflags_nopc},
+ [PROBES_MUL_ADD_LONG] = {
+ .handler = emulate_rdlo12rdhi16rn0rm8_rwflags_nopc},
+ [PROBES_MUL_ADD] = {.handler = emulate_rd16rn12rm0rs8_rwflags_nopc},
+ [PROBES_BITFIELD] = {.handler = emulate_rd12rm0_noflags_nopc},
+ [PROBES_BRANCH] = {.handler = simulate_bbl},
+ [PROBES_LDMSTM] = {.decoder = kprobe_decode_ldmstm}
+};
diff --git a/arch/arm/kernel/kprobes-common.c b/arch/arm/kernel/kprobes-common.c
index 28c41b6..cea610a 100644
--- a/arch/arm/kernel/kprobes-common.c
+++ b/arch/arm/kernel/kprobes-common.c
@@ -114,7 +114,8 @@ emulate_ldm_r3_15(struct kprobe *p, struct pt_regs *regs)
}
enum kprobe_insn __kprobes
-kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *h)
{
kprobe_insn_handler_t *handler = 0;
unsigned reglist = insn & 0xffff;
diff --git a/arch/arm/kernel/kprobes-thumb.c b/arch/arm/kernel/kprobes-thumb.c
index 496281f9..7cc5286 100644
--- a/arch/arm/kernel/kprobes-thumb.c
+++ b/arch/arm/kernel/kprobes-thumb.c
@@ -14,19 +14,11 @@
#include "kprobes.h"
#include "probes.h"
+#include "probes-thumb.h"
-
-/*
- * True if current instruction is in an IT block.
- */
-#define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000)
-
-/*
- * Return the condition code to check for the currently executing instruction.
- * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
- * in_it_block returns true.
- */
-#define current_cond(cpsr) ((cpsr >> 12) & 0xf)
+/* These emulation encodings are functionally equivalent... */
+#define t32_emulate_rd8rn16rm0ra12_noflags \
+ t32_emulate_rdlo12rdhi8rn16rm0_noflags
/*
* Return the PC value for a probe in thumb code.
@@ -39,7 +31,9 @@ static inline unsigned long __kprobes thumb_probe_pc(struct kprobe *p)
return (unsigned long)p->addr - 1 + 4;
}
-static void __kprobes
+/* t32 thumb actions */
+
+void __kprobes
t32_simulate_table_branch(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -59,7 +53,7 @@ t32_simulate_table_branch(struct kprobe *p, struct pt_regs *regs)
regs->ARM_pc = pc + 2 * halfwords;
}
-static void __kprobes
+void __kprobes
t32_simulate_mrs(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -68,7 +62,7 @@ t32_simulate_mrs(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rd] = regs->ARM_cpsr & mask;
}
-static void __kprobes
+void __kprobes
t32_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -83,8 +77,9 @@ t32_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs)
regs->ARM_pc = pc + (offset * 2);
}
-static enum kprobe_insn __kprobes
-t32_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t32_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
int cc = (insn >> 22) & 0xf;
asi->insn_check_cc = kprobe_condition_checks[cc];
@@ -92,7 +87,7 @@ t32_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return INSN_GOOD_NO_SLOT;
}
-static void __kprobes
+void __kprobes
t32_simulate_branch(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -120,7 +115,7 @@ t32_simulate_branch(struct kprobe *p, struct pt_regs *regs)
regs->ARM_pc = pc + (offset * 2);
}
-static void __kprobes
+void __kprobes
t32_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -158,10 +153,11 @@ t32_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rt] = rtv;
}
-static enum kprobe_insn __kprobes
-t32_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t32_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
- enum kprobe_insn ret = kprobe_decode_ldmstm(insn, asi);
+ enum kprobe_insn ret = kprobe_decode_ldmstm(insn, asi, d);
/* Fixup modified instruction to have halfwords in correct order...*/
insn = asi->insn[0];
@@ -171,7 +167,7 @@ t32_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return ret;
}
-static void __kprobes
+void __kprobes
t32_emulate_ldrdstrd(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -198,7 +194,7 @@ t32_emulate_ldrdstrd(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rt2] = rt2v;
}
-static void __kprobes
+void __kprobes
t32_emulate_ldrstr(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -224,7 +220,7 @@ t32_emulate_ldrstr(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rt] = rtv;
}
-static void __kprobes
+void __kprobes
t32_emulate_rd8rn16rm0_rwflags(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -251,7 +247,7 @@ t32_emulate_rd8rn16rm0_rwflags(struct kprobe *p, struct pt_regs *regs)
regs->ARM_cpsr = (regs->ARM_cpsr & ~APSR_MASK) | (cpsr & APSR_MASK);
}
-static void __kprobes
+void __kprobes
t32_emulate_rd8pc16_noflags(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -271,7 +267,7 @@ t32_emulate_rd8pc16_noflags(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rd] = rdv;
}
-static void __kprobes
+void __kprobes
t32_emulate_rd8rn16_noflags(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -291,7 +287,7 @@ t32_emulate_rd8rn16_noflags(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rd] = rdv;
}
-static void __kprobes
+void __kprobes
t32_emulate_rdlo12rdhi8rn16rm0_noflags(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -316,640 +312,9 @@ t32_emulate_rdlo12rdhi8rn16rm0_noflags(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rdlo] = rdlov;
regs->uregs[rdhi] = rdhiv;
}
+/* t16 thumb actions */
-/* These emulation encodings are functionally equivalent... */
-#define t32_emulate_rd8rn16rm0ra12_noflags \
- t32_emulate_rdlo12rdhi8rn16rm0_noflags
-
-static const union decode_item t32_table_1110_100x_x0xx[] = {
- /* Load/store multiple instructions */
-
- /* Rn is PC 1110 100x x0xx 1111 xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfe4f0000, 0xe80f0000),
-
- /* SRS 1110 1000 00x0 xxxx xxxx xxxx xxxx xxxx */
- /* RFE 1110 1000 00x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffc00000, 0xe8000000),
- /* SRS 1110 1001 10x0 xxxx xxxx xxxx xxxx xxxx */
- /* RFE 1110 1001 10x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffc00000, 0xe9800000),
-
- /* STM Rn, {...pc} 1110 100x x0x0 xxxx 1xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfe508000, 0xe8008000),
- /* LDM Rn, {...lr,pc} 1110 100x x0x1 xxxx 11xx xxxx xxxx xxxx */
- DECODE_REJECT (0xfe50c000, 0xe810c000),
- /* LDM/STM Rn, {...sp} 1110 100x x0xx xxxx xx1x xxxx xxxx xxxx */
- DECODE_REJECT (0xfe402000, 0xe8002000),
-
- /* STMIA 1110 1000 10x0 xxxx xxxx xxxx xxxx xxxx */
- /* LDMIA 1110 1000 10x1 xxxx xxxx xxxx xxxx xxxx */
- /* STMDB 1110 1001 00x0 xxxx xxxx xxxx xxxx xxxx */
- /* LDMDB 1110 1001 00x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_CUSTOM (0xfe400000, 0xe8000000, t32_decode_ldmstm),
-
- DECODE_END
-};
-
-static const union decode_item t32_table_1110_100x_x1xx[] = {
- /* Load/store dual, load/store exclusive, table branch */
-
- /* STRD (immediate) 1110 1000 x110 xxxx xxxx xxxx xxxx xxxx */
- /* LDRD (immediate) 1110 1000 x111 xxxx xxxx xxxx xxxx xxxx */
- DECODE_OR (0xff600000, 0xe8600000),
- /* STRD (immediate) 1110 1001 x1x0 xxxx xxxx xxxx xxxx xxxx */
- /* LDRD (immediate) 1110 1001 x1x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xff400000, 0xe9400000, t32_emulate_ldrdstrd,
- REGS(NOPCWB, NOSPPC, NOSPPC, 0, 0)),
-
- /* TBB 1110 1000 1101 xxxx xxxx xxxx 0000 xxxx */
- /* TBH 1110 1000 1101 xxxx xxxx xxxx 0001 xxxx */
- DECODE_SIMULATEX(0xfff000e0, 0xe8d00000, t32_simulate_table_branch,
- REGS(NOSP, 0, 0, 0, NOSPPC)),
-
- /* STREX 1110 1000 0100 xxxx xxxx xxxx xxxx xxxx */
- /* LDREX 1110 1000 0101 xxxx xxxx xxxx xxxx xxxx */
- /* STREXB 1110 1000 1100 xxxx xxxx xxxx 0100 xxxx */
- /* STREXH 1110 1000 1100 xxxx xxxx xxxx 0101 xxxx */
- /* STREXD 1110 1000 1100 xxxx xxxx xxxx 0111 xxxx */
- /* LDREXB 1110 1000 1101 xxxx xxxx xxxx 0100 xxxx */
- /* LDREXH 1110 1000 1101 xxxx xxxx xxxx 0101 xxxx */
- /* LDREXD 1110 1000 1101 xxxx xxxx xxxx 0111 xxxx */
- /* And unallocated instructions... */
- DECODE_END
-};
-
-static const union decode_item t32_table_1110_101x[] = {
- /* Data-processing (shifted register) */
-
- /* TST 1110 1010 0001 xxxx xxxx 1111 xxxx xxxx */
- /* TEQ 1110 1010 1001 xxxx xxxx 1111 xxxx xxxx */
- DECODE_EMULATEX (0xff700f00, 0xea100f00, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, 0, 0, NOSPPC)),
-
- /* CMN 1110 1011 0001 xxxx xxxx 1111 xxxx xxxx */
- DECODE_OR (0xfff00f00, 0xeb100f00),
- /* CMP 1110 1011 1011 xxxx xxxx 1111 xxxx xxxx */
- DECODE_EMULATEX (0xfff00f00, 0xebb00f00, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOPC, 0, 0, 0, NOSPPC)),
-
- /* MOV 1110 1010 010x 1111 xxxx xxxx xxxx xxxx */
- /* MVN 1110 1010 011x 1111 xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xffcf0000, 0xea4f0000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(0, 0, NOSPPC, 0, NOSPPC)),
-
- /* ??? 1110 1010 101x xxxx xxxx xxxx xxxx xxxx */
- /* ??? 1110 1010 111x xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffa00000, 0xeaa00000),
- /* ??? 1110 1011 001x xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffe00000, 0xeb200000),
- /* ??? 1110 1011 100x xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffe00000, 0xeb800000),
- /* ??? 1110 1011 111x xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xffe00000, 0xebe00000),
-
- /* ADD/SUB SP, SP, Rm, LSL #0..3 */
- /* 1110 1011 x0xx 1101 x000 1101 xx00 xxxx */
- DECODE_EMULATEX (0xff4f7f30, 0xeb0d0d00, t32_emulate_rd8rn16rm0_rwflags,
- REGS(SP, 0, SP, 0, NOSPPC)),
-
- /* ADD/SUB SP, SP, Rm, shift */
- /* 1110 1011 x0xx 1101 xxxx 1101 xxxx xxxx */
- DECODE_REJECT (0xff4f0f00, 0xeb0d0d00),
-
- /* ADD/SUB Rd, SP, Rm, shift */
- /* 1110 1011 x0xx 1101 xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xff4f0000, 0xeb0d0000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(SP, 0, NOPC, 0, NOSPPC)),
-
- /* AND 1110 1010 000x xxxx xxxx xxxx xxxx xxxx */
- /* BIC 1110 1010 001x xxxx xxxx xxxx xxxx xxxx */
- /* ORR 1110 1010 010x xxxx xxxx xxxx xxxx xxxx */
- /* ORN 1110 1010 011x xxxx xxxx xxxx xxxx xxxx */
- /* EOR 1110 1010 100x xxxx xxxx xxxx xxxx xxxx */
- /* PKH 1110 1010 110x xxxx xxxx xxxx xxxx xxxx */
- /* ADD 1110 1011 000x xxxx xxxx xxxx xxxx xxxx */
- /* ADC 1110 1011 010x xxxx xxxx xxxx xxxx xxxx */
- /* SBC 1110 1011 011x xxxx xxxx xxxx xxxx xxxx */
- /* SUB 1110 1011 101x xxxx xxxx xxxx xxxx xxxx */
- /* RSB 1110 1011 110x xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfe000000, 0xea000000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
-
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_0x0x___0[] = {
- /* Data-processing (modified immediate) */
-
- /* TST 1111 0x00 0001 xxxx 0xxx 1111 xxxx xxxx */
- /* TEQ 1111 0x00 1001 xxxx 0xxx 1111 xxxx xxxx */
- DECODE_EMULATEX (0xfb708f00, 0xf0100f00, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, 0, 0, 0)),
-
- /* CMN 1111 0x01 0001 xxxx 0xxx 1111 xxxx xxxx */
- DECODE_OR (0xfbf08f00, 0xf1100f00),
- /* CMP 1111 0x01 1011 xxxx 0xxx 1111 xxxx xxxx */
- DECODE_EMULATEX (0xfbf08f00, 0xf1b00f00, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOPC, 0, 0, 0, 0)),
-
- /* MOV 1111 0x00 010x 1111 0xxx xxxx xxxx xxxx */
- /* MVN 1111 0x00 011x 1111 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfbcf8000, 0xf04f0000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(0, 0, NOSPPC, 0, 0)),
-
- /* ??? 1111 0x00 101x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfbe08000, 0xf0a00000),
- /* ??? 1111 0x00 110x xxxx 0xxx xxxx xxxx xxxx */
- /* ??? 1111 0x00 111x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfbc08000, 0xf0c00000),
- /* ??? 1111 0x01 001x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfbe08000, 0xf1200000),
- /* ??? 1111 0x01 100x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfbe08000, 0xf1800000),
- /* ??? 1111 0x01 111x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfbe08000, 0xf1e00000),
-
- /* ADD Rd, SP, #imm 1111 0x01 000x 1101 0xxx xxxx xxxx xxxx */
- /* SUB Rd, SP, #imm 1111 0x01 101x 1101 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfb4f8000, 0xf10d0000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(SP, 0, NOPC, 0, 0)),
-
- /* AND 1111 0x00 000x xxxx 0xxx xxxx xxxx xxxx */
- /* BIC 1111 0x00 001x xxxx 0xxx xxxx xxxx xxxx */
- /* ORR 1111 0x00 010x xxxx 0xxx xxxx xxxx xxxx */
- /* ORN 1111 0x00 011x xxxx 0xxx xxxx xxxx xxxx */
- /* EOR 1111 0x00 100x xxxx 0xxx xxxx xxxx xxxx */
- /* ADD 1111 0x01 000x xxxx 0xxx xxxx xxxx xxxx */
- /* ADC 1111 0x01 010x xxxx 0xxx xxxx xxxx xxxx */
- /* SBC 1111 0x01 011x xxxx 0xxx xxxx xxxx xxxx */
- /* SUB 1111 0x01 101x xxxx 0xxx xxxx xxxx xxxx */
- /* RSB 1111 0x01 110x xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfa008000, 0xf0000000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, NOSPPC, 0, 0)),
-
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_0x1x___0[] = {
- /* Data-processing (plain binary immediate) */
-
- /* ADDW Rd, PC, #imm 1111 0x10 0000 1111 0xxx xxxx xxxx xxxx */
- DECODE_OR (0xfbff8000, 0xf20f0000),
- /* SUBW Rd, PC, #imm 1111 0x10 1010 1111 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfbff8000, 0xf2af0000, t32_emulate_rd8pc16_noflags,
- REGS(PC, 0, NOSPPC, 0, 0)),
-
- /* ADDW SP, SP, #imm 1111 0x10 0000 1101 0xxx 1101 xxxx xxxx */
- DECODE_OR (0xfbff8f00, 0xf20d0d00),
- /* SUBW SP, SP, #imm 1111 0x10 1010 1101 0xxx 1101 xxxx xxxx */
- DECODE_EMULATEX (0xfbff8f00, 0xf2ad0d00, t32_emulate_rd8rn16_noflags,
- REGS(SP, 0, SP, 0, 0)),
-
- /* ADDW 1111 0x10 0000 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_OR (0xfbf08000, 0xf2000000),
- /* SUBW 1111 0x10 1010 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfbf08000, 0xf2a00000, t32_emulate_rd8rn16_noflags,
- REGS(NOPCX, 0, NOSPPC, 0, 0)),
-
- /* MOVW 1111 0x10 0100 xxxx 0xxx xxxx xxxx xxxx */
- /* MOVT 1111 0x10 1100 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfb708000, 0xf2400000, t32_emulate_rd8rn16_noflags,
- REGS(0, 0, NOSPPC, 0, 0)),
-
- /* SSAT16 1111 0x11 0010 xxxx 0000 xxxx 00xx xxxx */
- /* SSAT 1111 0x11 00x0 xxxx 0xxx xxxx xxxx xxxx */
- /* USAT16 1111 0x11 1010 xxxx 0000 xxxx 00xx xxxx */
- /* USAT 1111 0x11 10x0 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfb508000, 0xf3000000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, NOSPPC, 0, 0)),
-
- /* SFBX 1111 0x11 0100 xxxx 0xxx xxxx xxxx xxxx */
- /* UFBX 1111 0x11 1100 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfb708000, 0xf3400000, t32_emulate_rd8rn16_noflags,
- REGS(NOSPPC, 0, NOSPPC, 0, 0)),
-
- /* BFC 1111 0x11 0110 1111 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfbff8000, 0xf36f0000, t32_emulate_rd8rn16_noflags,
- REGS(0, 0, NOSPPC, 0, 0)),
-
- /* BFI 1111 0x11 0110 xxxx 0xxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfbf08000, 0xf3600000, t32_emulate_rd8rn16_noflags,
- REGS(NOSPPCX, 0, NOSPPC, 0, 0)),
-
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_0xxx___1[] = {
- /* Branches and miscellaneous control */
-
- /* YIELD 1111 0011 1010 xxxx 10x0 x000 0000 0001 */
- DECODE_OR (0xfff0d7ff, 0xf3a08001),
- /* SEV 1111 0011 1010 xxxx 10x0 x000 0000 0100 */
- DECODE_EMULATE (0xfff0d7ff, 0xf3a08004, kprobe_emulate_none),
- /* NOP 1111 0011 1010 xxxx 10x0 x000 0000 0000 */
- /* WFE 1111 0011 1010 xxxx 10x0 x000 0000 0010 */
- /* WFI 1111 0011 1010 xxxx 10x0 x000 0000 0011 */
- DECODE_SIMULATE (0xfff0d7fc, 0xf3a08000, kprobe_simulate_nop),
-
- /* MRS Rd, CPSR 1111 0011 1110 xxxx 10x0 xxxx xxxx xxxx */
- DECODE_SIMULATEX(0xfff0d000, 0xf3e08000, t32_simulate_mrs,
- REGS(0, 0, NOSPPC, 0, 0)),
-
- /*
- * Unsupported instructions
- * 1111 0x11 1xxx xxxx 10x0 xxxx xxxx xxxx
- *
- * MSR 1111 0011 100x xxxx 10x0 xxxx xxxx xxxx
- * DBG hint 1111 0011 1010 xxxx 10x0 x000 1111 xxxx
- * Unallocated hints 1111 0011 1010 xxxx 10x0 x000 xxxx xxxx
- * CPS 1111 0011 1010 xxxx 10x0 xxxx xxxx xxxx
- * CLREX/DSB/DMB/ISB 1111 0011 1011 xxxx 10x0 xxxx xxxx xxxx
- * BXJ 1111 0011 1100 xxxx 10x0 xxxx xxxx xxxx
- * SUBS PC,LR,#<imm8> 1111 0011 1101 xxxx 10x0 xxxx xxxx xxxx
- * MRS Rd, SPSR 1111 0011 1111 xxxx 10x0 xxxx xxxx xxxx
- * SMC 1111 0111 1111 xxxx 1000 xxxx xxxx xxxx
- * UNDEFINED 1111 0111 1111 xxxx 1010 xxxx xxxx xxxx
- * ??? 1111 0111 1xxx xxxx 1010 xxxx xxxx xxxx
- */
- DECODE_REJECT (0xfb80d000, 0xf3808000),
-
- /* Bcc 1111 0xxx xxxx xxxx 10x0 xxxx xxxx xxxx */
- DECODE_CUSTOM (0xf800d000, 0xf0008000, t32_decode_cond_branch),
-
- /* BLX 1111 0xxx xxxx xxxx 11x0 xxxx xxxx xxx0 */
- DECODE_OR (0xf800d001, 0xf000c000),
- /* B 1111 0xxx xxxx xxxx 10x1 xxxx xxxx xxxx */
- /* BL 1111 0xxx xxxx xxxx 11x1 xxxx xxxx xxxx */
- DECODE_SIMULATE (0xf8009000, 0xf0009000, t32_simulate_branch),
-
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_100x_x0x1__1111[] = {
- /* Memory hints */
-
- /* PLD (literal) 1111 1000 x001 1111 1111 xxxx xxxx xxxx */
- /* PLI (literal) 1111 1001 x001 1111 1111 xxxx xxxx xxxx */
- DECODE_SIMULATE (0xfe7ff000, 0xf81ff000, kprobe_simulate_nop),
-
- /* PLD{W} (immediate) 1111 1000 10x1 xxxx 1111 xxxx xxxx xxxx */
- DECODE_OR (0xffd0f000, 0xf890f000),
- /* PLD{W} (immediate) 1111 1000 00x1 xxxx 1111 1100 xxxx xxxx */
- DECODE_OR (0xffd0ff00, 0xf810fc00),
- /* PLI (immediate) 1111 1001 1001 xxxx 1111 xxxx xxxx xxxx */
- DECODE_OR (0xfff0f000, 0xf990f000),
- /* PLI (immediate) 1111 1001 0001 xxxx 1111 1100 xxxx xxxx */
- DECODE_SIMULATEX(0xfff0ff00, 0xf910fc00, kprobe_simulate_nop,
- REGS(NOPCX, 0, 0, 0, 0)),
-
- /* PLD{W} (register) 1111 1000 00x1 xxxx 1111 0000 00xx xxxx */
- DECODE_OR (0xffd0ffc0, 0xf810f000),
- /* PLI (register) 1111 1001 0001 xxxx 1111 0000 00xx xxxx */
- DECODE_SIMULATEX(0xfff0ffc0, 0xf910f000, kprobe_simulate_nop,
- REGS(NOPCX, 0, 0, 0, NOSPPC)),
-
- /* Other unallocated instructions... */
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_100x[] = {
- /* Store/Load single data item */
-
- /* ??? 1111 100x x11x xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfe600000, 0xf8600000),
-
- /* ??? 1111 1001 0101 xxxx xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xfff00000, 0xf9500000),
-
- /* ??? 1111 100x 0xxx xxxx xxxx 10x0 xxxx xxxx */
- DECODE_REJECT (0xfe800d00, 0xf8000800),
-
- /* STRBT 1111 1000 0000 xxxx xxxx 1110 xxxx xxxx */
- /* STRHT 1111 1000 0010 xxxx xxxx 1110 xxxx xxxx */
- /* STRT 1111 1000 0100 xxxx xxxx 1110 xxxx xxxx */
- /* LDRBT 1111 1000 0001 xxxx xxxx 1110 xxxx xxxx */
- /* LDRSBT 1111 1001 0001 xxxx xxxx 1110 xxxx xxxx */
- /* LDRHT 1111 1000 0011 xxxx xxxx 1110 xxxx xxxx */
- /* LDRSHT 1111 1001 0011 xxxx xxxx 1110 xxxx xxxx */
- /* LDRT 1111 1000 0101 xxxx xxxx 1110 xxxx xxxx */
- DECODE_REJECT (0xfe800f00, 0xf8000e00),
-
- /* STR{,B,H} Rn,[PC...] 1111 1000 xxx0 1111 xxxx xxxx xxxx xxxx */
- DECODE_REJECT (0xff1f0000, 0xf80f0000),
-
- /* STR{,B,H} PC,[Rn...] 1111 1000 xxx0 xxxx 1111 xxxx xxxx xxxx */
- DECODE_REJECT (0xff10f000, 0xf800f000),
-
- /* LDR (literal) 1111 1000 x101 1111 xxxx xxxx xxxx xxxx */
- DECODE_SIMULATEX(0xff7f0000, 0xf85f0000, t32_simulate_ldr_literal,
- REGS(PC, ANY, 0, 0, 0)),
-
- /* STR (immediate) 1111 1000 0100 xxxx xxxx 1xxx xxxx xxxx */
- /* LDR (immediate) 1111 1000 0101 xxxx xxxx 1xxx xxxx xxxx */
- DECODE_OR (0xffe00800, 0xf8400800),
- /* STR (immediate) 1111 1000 1100 xxxx xxxx xxxx xxxx xxxx */
- /* LDR (immediate) 1111 1000 1101 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xffe00000, 0xf8c00000, t32_emulate_ldrstr,
- REGS(NOPCX, ANY, 0, 0, 0)),
-
- /* STR (register) 1111 1000 0100 xxxx xxxx 0000 00xx xxxx */
- /* LDR (register) 1111 1000 0101 xxxx xxxx 0000 00xx xxxx */
- DECODE_EMULATEX (0xffe00fc0, 0xf8400000, t32_emulate_ldrstr,
- REGS(NOPCX, ANY, 0, 0, NOSPPC)),
-
- /* LDRB (literal) 1111 1000 x001 1111 xxxx xxxx xxxx xxxx */
- /* LDRSB (literal) 1111 1001 x001 1111 xxxx xxxx xxxx xxxx */
- /* LDRH (literal) 1111 1000 x011 1111 xxxx xxxx xxxx xxxx */
- /* LDRSH (literal) 1111 1001 x011 1111 xxxx xxxx xxxx xxxx */
- DECODE_SIMULATEX(0xfe5f0000, 0xf81f0000, t32_simulate_ldr_literal,
- REGS(PC, NOSPPCX, 0, 0, 0)),
-
- /* STRB (immediate) 1111 1000 0000 xxxx xxxx 1xxx xxxx xxxx */
- /* STRH (immediate) 1111 1000 0010 xxxx xxxx 1xxx xxxx xxxx */
- /* LDRB (immediate) 1111 1000 0001 xxxx xxxx 1xxx xxxx xxxx */
- /* LDRSB (immediate) 1111 1001 0001 xxxx xxxx 1xxx xxxx xxxx */
- /* LDRH (immediate) 1111 1000 0011 xxxx xxxx 1xxx xxxx xxxx */
- /* LDRSH (immediate) 1111 1001 0011 xxxx xxxx 1xxx xxxx xxxx */
- DECODE_OR (0xfec00800, 0xf8000800),
- /* STRB (immediate) 1111 1000 1000 xxxx xxxx xxxx xxxx xxxx */
- /* STRH (immediate) 1111 1000 1010 xxxx xxxx xxxx xxxx xxxx */
- /* LDRB (immediate) 1111 1000 1001 xxxx xxxx xxxx xxxx xxxx */
- /* LDRSB (immediate) 1111 1001 1001 xxxx xxxx xxxx xxxx xxxx */
- /* LDRH (immediate) 1111 1000 1011 xxxx xxxx xxxx xxxx xxxx */
- /* LDRSH (immediate) 1111 1001 1011 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0xfec00000, 0xf8800000, t32_emulate_ldrstr,
- REGS(NOPCX, NOSPPCX, 0, 0, 0)),
-
- /* STRB (register) 1111 1000 0000 xxxx xxxx 0000 00xx xxxx */
- /* STRH (register) 1111 1000 0010 xxxx xxxx 0000 00xx xxxx */
- /* LDRB (register) 1111 1000 0001 xxxx xxxx 0000 00xx xxxx */
- /* LDRSB (register) 1111 1001 0001 xxxx xxxx 0000 00xx xxxx */
- /* LDRH (register) 1111 1000 0011 xxxx xxxx 0000 00xx xxxx */
- /* LDRSH (register) 1111 1001 0011 xxxx xxxx 0000 00xx xxxx */
- DECODE_EMULATEX (0xfe800fc0, 0xf8000000, t32_emulate_ldrstr,
- REGS(NOPCX, NOSPPCX, 0, 0, NOSPPC)),
-
- /* Other unallocated instructions... */
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_1010___1111[] = {
- /* Data-processing (register) */
-
- /* ??? 1111 1010 011x xxxx 1111 xxxx 1xxx xxxx */
- DECODE_REJECT (0xffe0f080, 0xfa60f080),
-
- /* SXTH 1111 1010 0000 1111 1111 xxxx 1xxx xxxx */
- /* UXTH 1111 1010 0001 1111 1111 xxxx 1xxx xxxx */
- /* SXTB16 1111 1010 0010 1111 1111 xxxx 1xxx xxxx */
- /* UXTB16 1111 1010 0011 1111 1111 xxxx 1xxx xxxx */
- /* SXTB 1111 1010 0100 1111 1111 xxxx 1xxx xxxx */
- /* UXTB 1111 1010 0101 1111 1111 xxxx 1xxx xxxx */
- DECODE_EMULATEX (0xff8ff080, 0xfa0ff080, t32_emulate_rd8rn16rm0_rwflags,
- REGS(0, 0, NOSPPC, 0, NOSPPC)),
-
-
- /* ??? 1111 1010 1xxx xxxx 1111 xxxx 0x11 xxxx */
- DECODE_REJECT (0xff80f0b0, 0xfa80f030),
- /* ??? 1111 1010 1x11 xxxx 1111 xxxx 0xxx xxxx */
- DECODE_REJECT (0xffb0f080, 0xfab0f000),
-
- /* SADD16 1111 1010 1001 xxxx 1111 xxxx 0000 xxxx */
- /* SASX 1111 1010 1010 xxxx 1111 xxxx 0000 xxxx */
- /* SSAX 1111 1010 1110 xxxx 1111 xxxx 0000 xxxx */
- /* SSUB16 1111 1010 1101 xxxx 1111 xxxx 0000 xxxx */
- /* SADD8 1111 1010 1000 xxxx 1111 xxxx 0000 xxxx */
- /* SSUB8 1111 1010 1100 xxxx 1111 xxxx 0000 xxxx */
-
- /* QADD16 1111 1010 1001 xxxx 1111 xxxx 0001 xxxx */
- /* QASX 1111 1010 1010 xxxx 1111 xxxx 0001 xxxx */
- /* QSAX 1111 1010 1110 xxxx 1111 xxxx 0001 xxxx */
- /* QSUB16 1111 1010 1101 xxxx 1111 xxxx 0001 xxxx */
- /* QADD8 1111 1010 1000 xxxx 1111 xxxx 0001 xxxx */
- /* QSUB8 1111 1010 1100 xxxx 1111 xxxx 0001 xxxx */
-
- /* SHADD16 1111 1010 1001 xxxx 1111 xxxx 0010 xxxx */
- /* SHASX 1111 1010 1010 xxxx 1111 xxxx 0010 xxxx */
- /* SHSAX 1111 1010 1110 xxxx 1111 xxxx 0010 xxxx */
- /* SHSUB16 1111 1010 1101 xxxx 1111 xxxx 0010 xxxx */
- /* SHADD8 1111 1010 1000 xxxx 1111 xxxx 0010 xxxx */
- /* SHSUB8 1111 1010 1100 xxxx 1111 xxxx 0010 xxxx */
-
- /* UADD16 1111 1010 1001 xxxx 1111 xxxx 0100 xxxx */
- /* UASX 1111 1010 1010 xxxx 1111 xxxx 0100 xxxx */
- /* USAX 1111 1010 1110 xxxx 1111 xxxx 0100 xxxx */
- /* USUB16 1111 1010 1101 xxxx 1111 xxxx 0100 xxxx */
- /* UADD8 1111 1010 1000 xxxx 1111 xxxx 0100 xxxx */
- /* USUB8 1111 1010 1100 xxxx 1111 xxxx 0100 xxxx */
-
- /* UQADD16 1111 1010 1001 xxxx 1111 xxxx 0101 xxxx */
- /* UQASX 1111 1010 1010 xxxx 1111 xxxx 0101 xxxx */
- /* UQSAX 1111 1010 1110 xxxx 1111 xxxx 0101 xxxx */
- /* UQSUB16 1111 1010 1101 xxxx 1111 xxxx 0101 xxxx */
- /* UQADD8 1111 1010 1000 xxxx 1111 xxxx 0101 xxxx */
- /* UQSUB8 1111 1010 1100 xxxx 1111 xxxx 0101 xxxx */
-
- /* UHADD16 1111 1010 1001 xxxx 1111 xxxx 0110 xxxx */
- /* UHASX 1111 1010 1010 xxxx 1111 xxxx 0110 xxxx */
- /* UHSAX 1111 1010 1110 xxxx 1111 xxxx 0110 xxxx */
- /* UHSUB16 1111 1010 1101 xxxx 1111 xxxx 0110 xxxx */
- /* UHADD8 1111 1010 1000 xxxx 1111 xxxx 0110 xxxx */
- /* UHSUB8 1111 1010 1100 xxxx 1111 xxxx 0110 xxxx */
- DECODE_OR (0xff80f080, 0xfa80f000),
-
- /* SXTAH 1111 1010 0000 xxxx 1111 xxxx 1xxx xxxx */
- /* UXTAH 1111 1010 0001 xxxx 1111 xxxx 1xxx xxxx */
- /* SXTAB16 1111 1010 0010 xxxx 1111 xxxx 1xxx xxxx */
- /* UXTAB16 1111 1010 0011 xxxx 1111 xxxx 1xxx xxxx */
- /* SXTAB 1111 1010 0100 xxxx 1111 xxxx 1xxx xxxx */
- /* UXTAB 1111 1010 0101 xxxx 1111 xxxx 1xxx xxxx */
- DECODE_OR (0xff80f080, 0xfa00f080),
-
- /* QADD 1111 1010 1000 xxxx 1111 xxxx 1000 xxxx */
- /* QDADD 1111 1010 1000 xxxx 1111 xxxx 1001 xxxx */
- /* QSUB 1111 1010 1000 xxxx 1111 xxxx 1010 xxxx */
- /* QDSUB 1111 1010 1000 xxxx 1111 xxxx 1011 xxxx */
- DECODE_OR (0xfff0f0c0, 0xfa80f080),
-
- /* SEL 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */
- DECODE_OR (0xfff0f0f0, 0xfaa0f080),
-
- /* LSL 1111 1010 000x xxxx 1111 xxxx 0000 xxxx */
- /* LSR 1111 1010 001x xxxx 1111 xxxx 0000 xxxx */
- /* ASR 1111 1010 010x xxxx 1111 xxxx 0000 xxxx */
- /* ROR 1111 1010 011x xxxx 1111 xxxx 0000 xxxx */
- DECODE_EMULATEX (0xff80f0f0, 0xfa00f000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
-
- /* CLZ 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */
- DECODE_OR (0xfff0f0f0, 0xfab0f080),
-
- /* REV 1111 1010 1001 xxxx 1111 xxxx 1000 xxxx */
- /* REV16 1111 1010 1001 xxxx 1111 xxxx 1001 xxxx */
- /* RBIT 1111 1010 1001 xxxx 1111 xxxx 1010 xxxx */
- /* REVSH 1111 1010 1001 xxxx 1111 xxxx 1011 xxxx */
- DECODE_EMULATEX (0xfff0f0c0, 0xfa90f080, t32_emulate_rd8rn16_noflags,
- REGS(NOSPPC, 0, NOSPPC, 0, SAMEAS16)),
-
- /* Other unallocated instructions... */
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_1011_0[] = {
- /* Multiply, multiply accumulate, and absolute difference */
-
- /* ??? 1111 1011 0000 xxxx 1111 xxxx 0001 xxxx */
- DECODE_REJECT (0xfff0f0f0, 0xfb00f010),
- /* ??? 1111 1011 0111 xxxx 1111 xxxx 0001 xxxx */
- DECODE_REJECT (0xfff0f0f0, 0xfb70f010),
-
- /* SMULxy 1111 1011 0001 xxxx 1111 xxxx 00xx xxxx */
- DECODE_OR (0xfff0f0c0, 0xfb10f000),
- /* MUL 1111 1011 0000 xxxx 1111 xxxx 0000 xxxx */
- /* SMUAD{X} 1111 1011 0010 xxxx 1111 xxxx 000x xxxx */
- /* SMULWy 1111 1011 0011 xxxx 1111 xxxx 000x xxxx */
- /* SMUSD{X} 1111 1011 0100 xxxx 1111 xxxx 000x xxxx */
- /* SMMUL{R} 1111 1011 0101 xxxx 1111 xxxx 000x xxxx */
- /* USAD8 1111 1011 0111 xxxx 1111 xxxx 0000 xxxx */
- DECODE_EMULATEX (0xff80f0e0, 0xfb00f000, t32_emulate_rd8rn16rm0_rwflags,
- REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
-
- /* ??? 1111 1011 0111 xxxx xxxx xxxx 0001 xxxx */
- DECODE_REJECT (0xfff000f0, 0xfb700010),
-
- /* SMLAxy 1111 1011 0001 xxxx xxxx xxxx 00xx xxxx */
- DECODE_OR (0xfff000c0, 0xfb100000),
- /* MLA 1111 1011 0000 xxxx xxxx xxxx 0000 xxxx */
- /* MLS 1111 1011 0000 xxxx xxxx xxxx 0001 xxxx */
- /* SMLAD{X} 1111 1011 0010 xxxx xxxx xxxx 000x xxxx */
- /* SMLAWy 1111 1011 0011 xxxx xxxx xxxx 000x xxxx */
- /* SMLSD{X} 1111 1011 0100 xxxx xxxx xxxx 000x xxxx */
- /* SMMLA{R} 1111 1011 0101 xxxx xxxx xxxx 000x xxxx */
- /* SMMLS{R} 1111 1011 0110 xxxx xxxx xxxx 000x xxxx */
- /* USADA8 1111 1011 0111 xxxx xxxx xxxx 0000 xxxx */
- DECODE_EMULATEX (0xff8000c0, 0xfb000000, t32_emulate_rd8rn16rm0ra12_noflags,
- REGS(NOSPPC, NOSPPCX, NOSPPC, 0, NOSPPC)),
-
- /* Other unallocated instructions... */
- DECODE_END
-};
-
-static const union decode_item t32_table_1111_1011_1[] = {
- /* Long multiply, long multiply accumulate, and divide */
-
- /* UMAAL 1111 1011 1110 xxxx xxxx xxxx 0110 xxxx */
- DECODE_OR (0xfff000f0, 0xfbe00060),
- /* SMLALxy 1111 1011 1100 xxxx xxxx xxxx 10xx xxxx */
- DECODE_OR (0xfff000c0, 0xfbc00080),
- /* SMLALD{X} 1111 1011 1100 xxxx xxxx xxxx 110x xxxx */
- /* SMLSLD{X} 1111 1011 1101 xxxx xxxx xxxx 110x xxxx */
- DECODE_OR (0xffe000e0, 0xfbc000c0),
- /* SMULL 1111 1011 1000 xxxx xxxx xxxx 0000 xxxx */
- /* UMULL 1111 1011 1010 xxxx xxxx xxxx 0000 xxxx */
- /* SMLAL 1111 1011 1100 xxxx xxxx xxxx 0000 xxxx */
- /* UMLAL 1111 1011 1110 xxxx xxxx xxxx 0000 xxxx */
- DECODE_EMULATEX (0xff9000f0, 0xfb800000, t32_emulate_rdlo12rdhi8rn16rm0_noflags,
- REGS(NOSPPC, NOSPPC, NOSPPC, 0, NOSPPC)),
-
- /* SDIV 1111 1011 1001 xxxx xxxx xxxx 1111 xxxx */
- /* UDIV 1111 1011 1011 xxxx xxxx xxxx 1111 xxxx */
- /* Other unallocated instructions... */
- DECODE_END
-};
-
-const union decode_item kprobe_decode_thumb32_table[] = {
-
- /*
- * Load/store multiple instructions
- * 1110 100x x0xx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfe400000, 0xe8000000, t32_table_1110_100x_x0xx),
-
- /*
- * Load/store dual, load/store exclusive, table branch
- * 1110 100x x1xx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfe400000, 0xe8400000, t32_table_1110_100x_x1xx),
-
- /*
- * Data-processing (shifted register)
- * 1110 101x xxxx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfe000000, 0xea000000, t32_table_1110_101x),
-
- /*
- * Coprocessor instructions
- * 1110 11xx xxxx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_REJECT (0xfc000000, 0xec000000),
-
- /*
- * Data-processing (modified immediate)
- * 1111 0x0x xxxx xxxx 0xxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfa008000, 0xf0000000, t32_table_1111_0x0x___0),
-
- /*
- * Data-processing (plain binary immediate)
- * 1111 0x1x xxxx xxxx 0xxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfa008000, 0xf2000000, t32_table_1111_0x1x___0),
-
- /*
- * Branches and miscellaneous control
- * 1111 0xxx xxxx xxxx 1xxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xf8008000, 0xf0008000, t32_table_1111_0xxx___1),
-
- /*
- * Advanced SIMD element or structure load/store instructions
- * 1111 1001 xxx0 xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_REJECT (0xff100000, 0xf9000000),
-
- /*
- * Memory hints
- * 1111 100x x0x1 xxxx 1111 xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfe50f000, 0xf810f000, t32_table_1111_100x_x0x1__1111),
-
- /*
- * Store single data item
- * 1111 1000 xxx0 xxxx xxxx xxxx xxxx xxxx
- * Load single data items
- * 1111 100x xxx1 xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xfe000000, 0xf8000000, t32_table_1111_100x),
-
- /*
- * Data-processing (register)
- * 1111 1010 xxxx xxxx 1111 xxxx xxxx xxxx
- */
- DECODE_TABLE (0xff00f000, 0xfa00f000, t32_table_1111_1010___1111),
-
- /*
- * Multiply, multiply accumulate, and absolute difference
- * 1111 1011 0xxx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xff800000, 0xfb000000, t32_table_1111_1011_0),
-
- /*
- * Long multiply, long multiply accumulate, and divide
- * 1111 1011 1xxx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_TABLE (0xff800000, 0xfb800000, t32_table_1111_1011_1),
-
- /*
- * Coprocessor instructions
- * 1111 11xx xxxx xxxx xxxx xxxx xxxx xxxx
- */
- DECODE_END
-};
-#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
-EXPORT_SYMBOL_GPL(kprobe_decode_thumb32_table);
-#endif
-
-static void __kprobes
+void __kprobes
t16_simulate_bxblx(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -963,7 +328,7 @@ t16_simulate_bxblx(struct kprobe *p, struct pt_regs *regs)
bx_write_pc(rmv, regs);
}
-static void __kprobes
+void __kprobes
t16_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -973,7 +338,7 @@ t16_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rt] = base[index];
}
-static void __kprobes
+void __kprobes
t16_simulate_ldrstr_sp_relative(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -986,7 +351,7 @@ t16_simulate_ldrstr_sp_relative(struct kprobe *p, struct pt_regs *regs)
base[index] = regs->uregs[rt];
}
-static void __kprobes
+void __kprobes
t16_simulate_reladr(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -997,7 +362,7 @@ t16_simulate_reladr(struct kprobe *p, struct pt_regs *regs)
regs->uregs[rt] = base + offset * 4;
}
-static void __kprobes
+void __kprobes
t16_simulate_add_sp_imm(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -1008,7 +373,7 @@ t16_simulate_add_sp_imm(struct kprobe *p, struct pt_regs *regs)
regs->ARM_sp += imm * 4;
}
-static void __kprobes
+void __kprobes
t16_simulate_cbz(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -1022,7 +387,7 @@ t16_simulate_cbz(struct kprobe *p, struct pt_regs *regs)
}
}
-static void __kprobes
+void __kprobes
t16_simulate_it(struct kprobe *p, struct pt_regs *regs)
{
/*
@@ -1039,21 +404,22 @@ t16_simulate_it(struct kprobe *p, struct pt_regs *regs)
regs->ARM_cpsr = cpsr;
}
-static void __kprobes
+void __kprobes
t16_singlestep_it(struct kprobe *p, struct pt_regs *regs)
{
regs->ARM_pc += 2;
t16_simulate_it(p, regs);
}
-static enum kprobe_insn __kprobes
-t16_decode_it(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t16_decode_it(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
asi->insn_singlestep = t16_singlestep_it;
return INSN_GOOD_NO_SLOT;
}
-static void __kprobes
+void __kprobes
t16_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -1063,8 +429,9 @@ t16_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs)
regs->ARM_pc = pc + (offset * 2);
}
-static enum kprobe_insn __kprobes
-t16_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t16_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
int cc = (insn >> 8) & 0xf;
asi->insn_check_cc = kprobe_condition_checks[cc];
@@ -1072,7 +439,7 @@ t16_decode_cond_branch(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return INSN_GOOD_NO_SLOT;
}
-static void __kprobes
+void __kprobes
t16_simulate_branch(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -1104,13 +471,13 @@ t16_emulate_loregs(struct kprobe *p, struct pt_regs *regs)
return (oldcpsr & ~APSR_MASK) | (newcpsr & APSR_MASK);
}
-static void __kprobes
+void __kprobes
t16_emulate_loregs_rwflags(struct kprobe *p, struct pt_regs *regs)
{
regs->ARM_cpsr = t16_emulate_loregs(p, regs);
}
-static void __kprobes
+void __kprobes
t16_emulate_loregs_noitrwflags(struct kprobe *p, struct pt_regs *regs)
{
unsigned long cpsr = t16_emulate_loregs(p, regs);
@@ -1118,7 +485,7 @@ t16_emulate_loregs_noitrwflags(struct kprobe *p, struct pt_regs *regs)
regs->ARM_cpsr = cpsr;
}
-static void __kprobes
+void __kprobes
t16_emulate_hiregs(struct kprobe *p, struct pt_regs *regs)
{
kprobe_opcode_t insn = p->opcode;
@@ -1149,8 +516,9 @@ t16_emulate_hiregs(struct kprobe *p, struct pt_regs *regs)
regs->ARM_cpsr = (regs->ARM_cpsr & ~APSR_MASK) | (cpsr & APSR_MASK);
}
-static enum kprobe_insn __kprobes
-t16_decode_hiregs(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t16_decode_hiregs(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
insn &= ~0x00ff;
insn |= 0x001; /* Set Rdn = R1 and Rm = R0 */
@@ -1159,7 +527,7 @@ t16_decode_hiregs(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return INSN_GOOD;
}
-static void __kprobes
+void __kprobes
t16_emulate_push(struct kprobe *p, struct pt_regs *regs)
{
__asm__ __volatile__ (
@@ -1175,8 +543,9 @@ t16_emulate_push(struct kprobe *p, struct pt_regs *regs)
);
}
-static enum kprobe_insn __kprobes
-t16_decode_push(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t16_decode_push(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
/*
* To simulate a PUSH we use a Thumb-2 "STMDB R9!, {registers}"
@@ -1189,7 +558,7 @@ t16_decode_push(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return INSN_GOOD;
}
-static void __kprobes
+void __kprobes
t16_emulate_pop_nopc(struct kprobe *p, struct pt_regs *regs)
{
__asm__ __volatile__ (
@@ -1205,7 +574,7 @@ t16_emulate_pop_nopc(struct kprobe *p, struct pt_regs *regs)
);
}
-static void __kprobes
+void __kprobes
t16_emulate_pop_pc(struct kprobe *p, struct pt_regs *regs)
{
register unsigned long pc asm("r8");
@@ -1225,8 +594,9 @@ t16_emulate_pop_pc(struct kprobe *p, struct pt_regs *regs)
bx_write_pc(pc, regs);
}
-static enum kprobe_insn __kprobes
-t16_decode_pop(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+enum kprobe_insn __kprobes
+t16_decode_pop(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *d)
{
/*
* To simulate a POP we use a Thumb-2 "LDMDB R9!, {registers}"
@@ -1240,231 +610,55 @@ t16_decode_pop(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return INSN_GOOD;
}
-static const union decode_item t16_table_1011[] = {
- /* Miscellaneous 16-bit instructions */
-
- /* ADD (SP plus immediate) 1011 0000 0xxx xxxx */
- /* SUB (SP minus immediate) 1011 0000 1xxx xxxx */
- DECODE_SIMULATE (0xff00, 0xb000, t16_simulate_add_sp_imm),
-
- /* CBZ 1011 00x1 xxxx xxxx */
- /* CBNZ 1011 10x1 xxxx xxxx */
- DECODE_SIMULATE (0xf500, 0xb100, t16_simulate_cbz),
-
- /* SXTH 1011 0010 00xx xxxx */
- /* SXTB 1011 0010 01xx xxxx */
- /* UXTH 1011 0010 10xx xxxx */
- /* UXTB 1011 0010 11xx xxxx */
- /* REV 1011 1010 00xx xxxx */
- /* REV16 1011 1010 01xx xxxx */
- /* ??? 1011 1010 10xx xxxx */
- /* REVSH 1011 1010 11xx xxxx */
- DECODE_REJECT (0xffc0, 0xba80),
- DECODE_EMULATE (0xf500, 0xb000, t16_emulate_loregs_rwflags),
-
- /* PUSH 1011 010x xxxx xxxx */
- DECODE_CUSTOM (0xfe00, 0xb400, t16_decode_push),
- /* POP 1011 110x xxxx xxxx */
- DECODE_CUSTOM (0xfe00, 0xbc00, t16_decode_pop),
-
- /*
- * If-Then, and hints
- * 1011 1111 xxxx xxxx
- */
-
- /* YIELD 1011 1111 0001 0000 */
- DECODE_OR (0xffff, 0xbf10),
- /* SEV 1011 1111 0100 0000 */
- DECODE_EMULATE (0xffff, 0xbf40, kprobe_emulate_none),
- /* NOP 1011 1111 0000 0000 */
- /* WFE 1011 1111 0010 0000 */
- /* WFI 1011 1111 0011 0000 */
- DECODE_SIMULATE (0xffcf, 0xbf00, kprobe_simulate_nop),
- /* Unassigned hints 1011 1111 xxxx 0000 */
- DECODE_REJECT (0xff0f, 0xbf00),
- /* IT 1011 1111 xxxx xxxx */
- DECODE_CUSTOM (0xff00, 0xbf00, t16_decode_it),
-
- /* SETEND 1011 0110 010x xxxx */
- /* CPS 1011 0110 011x xxxx */
- /* BKPT 1011 1110 xxxx xxxx */
- /* And unallocated instructions... */
- DECODE_END
+const union decode_item kprobes_t16_actions[] = {
+ [PROBES_T16_ADD_SP] = {.handler = t16_simulate_add_sp_imm},
+ [PROBES_T16_CBZ] = {.handler = t16_simulate_cbz},
+ [PROBES_T16_SIGN_EXTEND] = {.handler = t16_emulate_loregs_rwflags},
+ [PROBES_T16_PUSH] = {.decoder = t16_decode_push},
+ [PROBES_T16_POP] = {.decoder = t16_decode_pop},
+ [PROBES_T16_SEV] = {.handler = kprobe_emulate_none},
+ [PROBES_T16_WFE] = {.handler = kprobe_simulate_nop},
+ [PROBES_T16_IT] = {.decoder = t16_decode_it},
+ [PROBES_T16_CMP] = {.handler = t16_emulate_loregs_rwflags},
+ [PROBES_T16_ADDSUB] = {.handler = t16_emulate_loregs_noitrwflags},
+ [PROBES_T16_LOGICAL] = {.handler = t16_emulate_loregs_noitrwflags},
+ [PROBES_T16_LDR_LIT] = {.handler = t16_simulate_ldr_literal},
+ [PROBES_T16_BLX] = {.handler = t16_simulate_bxblx},
+ [PROBES_T16_HIREGOPS] = {.decoder = t16_decode_hiregs},
+ [PROBES_T16_LDRHSTRH] = {.handler = t16_emulate_loregs_rwflags},
+ [PROBES_T16_LDRSTR] = {.handler = t16_simulate_ldrstr_sp_relative},
+ [PROBES_T16_ADR] = {.handler = t16_simulate_reladr},
+ [PROBES_T16_LDMSTM] = {.handler = t16_emulate_loregs_rwflags},
+ [PROBES_T16_BRANCH_COND] = {.decoder = t16_decode_cond_branch},
+ [PROBES_T16_BRANCH] = {.handler = t16_simulate_branch},
};
-const union decode_item kprobe_decode_thumb16_table[] = {
-
- /*
- * Shift (immediate), add, subtract, move, and compare
- * 00xx xxxx xxxx xxxx
- */
-
- /* CMP (immediate) 0010 1xxx xxxx xxxx */
- DECODE_EMULATE (0xf800, 0x2800, t16_emulate_loregs_rwflags),
-
- /* ADD (register) 0001 100x xxxx xxxx */
- /* SUB (register) 0001 101x xxxx xxxx */
- /* LSL (immediate) 0000 0xxx xxxx xxxx */
- /* LSR (immediate) 0000 1xxx xxxx xxxx */
- /* ASR (immediate) 0001 0xxx xxxx xxxx */
- /* ADD (immediate, Thumb) 0001 110x xxxx xxxx */
- /* SUB (immediate, Thumb) 0001 111x xxxx xxxx */
- /* MOV (immediate) 0010 0xxx xxxx xxxx */
- /* ADD (immediate, Thumb) 0011 0xxx xxxx xxxx */
- /* SUB (immediate, Thumb) 0011 1xxx xxxx xxxx */
- DECODE_EMULATE (0xc000, 0x0000, t16_emulate_loregs_noitrwflags),
-
- /*
- * 16-bit Thumb data-processing instructions
- * 0100 00xx xxxx xxxx
- */
-
- /* TST (register) 0100 0010 00xx xxxx */
- DECODE_EMULATE (0xffc0, 0x4200, t16_emulate_loregs_rwflags),
- /* CMP (register) 0100 0010 10xx xxxx */
- /* CMN (register) 0100 0010 11xx xxxx */
- DECODE_EMULATE (0xff80, 0x4280, t16_emulate_loregs_rwflags),
- /* AND (register) 0100 0000 00xx xxxx */
- /* EOR (register) 0100 0000 01xx xxxx */
- /* LSL (register) 0100 0000 10xx xxxx */
- /* LSR (register) 0100 0000 11xx xxxx */
- /* ASR (register) 0100 0001 00xx xxxx */
- /* ADC (register) 0100 0001 01xx xxxx */
- /* SBC (register) 0100 0001 10xx xxxx */
- /* ROR (register) 0100 0001 11xx xxxx */
- /* RSB (immediate) 0100 0010 01xx xxxx */
- /* ORR (register) 0100 0011 00xx xxxx */
- /* MUL 0100 0011 00xx xxxx */
- /* BIC (register) 0100 0011 10xx xxxx */
- /* MVN (register) 0100 0011 10xx xxxx */
- DECODE_EMULATE (0xfc00, 0x4000, t16_emulate_loregs_noitrwflags),
-
- /*
- * Special data instructions and branch and exchange
- * 0100 01xx xxxx xxxx
- */
-
- /* BLX pc 0100 0111 1111 1xxx */
- DECODE_REJECT (0xfff8, 0x47f8),
-
- /* BX (register) 0100 0111 0xxx xxxx */
- /* BLX (register) 0100 0111 1xxx xxxx */
- DECODE_SIMULATE (0xff00, 0x4700, t16_simulate_bxblx),
-
- /* ADD pc, pc 0100 0100 1111 1111 */
- DECODE_REJECT (0xffff, 0x44ff),
-
- /* ADD (register) 0100 0100 xxxx xxxx */
- /* CMP (register) 0100 0101 xxxx xxxx */
- /* MOV (register) 0100 0110 xxxx xxxx */
- DECODE_CUSTOM (0xfc00, 0x4400, t16_decode_hiregs),
-
- /*
- * Load from Literal Pool
- * LDR (literal) 0100 1xxx xxxx xxxx
- */
- DECODE_SIMULATE (0xf800, 0x4800, t16_simulate_ldr_literal),
-
- /*
- * 16-bit Thumb Load/store instructions
- * 0101 xxxx xxxx xxxx
- * 011x xxxx xxxx xxxx
- * 100x xxxx xxxx xxxx
- */
-
- /* STR (register) 0101 000x xxxx xxxx */
- /* STRH (register) 0101 001x xxxx xxxx */
- /* STRB (register) 0101 010x xxxx xxxx */
- /* LDRSB (register) 0101 011x xxxx xxxx */
- /* LDR (register) 0101 100x xxxx xxxx */
- /* LDRH (register) 0101 101x xxxx xxxx */
- /* LDRB (register) 0101 110x xxxx xxxx */
- /* LDRSH (register) 0101 111x xxxx xxxx */
- /* STR (immediate, Thumb) 0110 0xxx xxxx xxxx */
- /* LDR (immediate, Thumb) 0110 1xxx xxxx xxxx */
- /* STRB (immediate, Thumb) 0111 0xxx xxxx xxxx */
- /* LDRB (immediate, Thumb) 0111 1xxx xxxx xxxx */
- DECODE_EMULATE (0xc000, 0x4000, t16_emulate_loregs_rwflags),
- /* STRH (immediate, Thumb) 1000 0xxx xxxx xxxx */
- /* LDRH (immediate, Thumb) 1000 1xxx xxxx xxxx */
- DECODE_EMULATE (0xf000, 0x8000, t16_emulate_loregs_rwflags),
- /* STR (immediate, Thumb) 1001 0xxx xxxx xxxx */
- /* LDR (immediate, Thumb) 1001 1xxx xxxx xxxx */
- DECODE_SIMULATE (0xf000, 0x9000, t16_simulate_ldrstr_sp_relative),
-
- /*
- * Generate PC-/SP-relative address
- * ADR (literal) 1010 0xxx xxxx xxxx
- * ADD (SP plus immediate) 1010 1xxx xxxx xxxx
- */
- DECODE_SIMULATE (0xf000, 0xa000, t16_simulate_reladr),
-
- /*
- * Miscellaneous 16-bit instructions
- * 1011 xxxx xxxx xxxx
- */
- DECODE_TABLE (0xf000, 0xb000, t16_table_1011),
-
- /* STM 1100 0xxx xxxx xxxx */
- /* LDM 1100 1xxx xxxx xxxx */
- DECODE_EMULATE (0xf000, 0xc000, t16_emulate_loregs_rwflags),
-
- /*
- * Conditional branch, and Supervisor Call
- */
-
- /* Permanently UNDEFINED 1101 1110 xxxx xxxx */
- /* SVC 1101 1111 xxxx xxxx */
- DECODE_REJECT (0xfe00, 0xde00),
-
- /* Conditional branch 1101 xxxx xxxx xxxx */
- DECODE_CUSTOM (0xf000, 0xd000, t16_decode_cond_branch),
-
- /*
- * Unconditional branch
- * B 1110 0xxx xxxx xxxx
- */
- DECODE_SIMULATE (0xf800, 0xe000, t16_simulate_branch),
-
- DECODE_END
+const union decode_item kprobes_t32_actions[] = {
+ [PROBES_T32_LDMSTM] = {.decoder = t32_decode_ldmstm},
+ [PROBES_T32_LDRDSTRD] = {.handler = t32_emulate_ldrdstrd},
+ [PROBES_T32_TABLE_BRANCH] = {.handler = t32_simulate_table_branch},
+ [PROBES_T32_TST] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_MOV] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_ADDSUB] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_LOGICAL] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_CMP] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_ADDWSUBW_PC] = {.handler = t32_emulate_rd8pc16_noflags,},
+ [PROBES_T32_ADDWSUBW] = {.handler = t32_emulate_rd8rn16_noflags},
+ [PROBES_T32_MOVW] = {.handler = t32_emulate_rd8rn16_noflags},
+ [PROBES_T32_SAT] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_BITFIELD] = {.handler = t32_emulate_rd8rn16_noflags},
+ [PROBES_T32_SEV] = {.handler = kprobe_emulate_none},
+ [PROBES_T32_WFE] = {.handler = kprobe_simulate_nop},
+ [PROBES_T32_MRS] = {.handler = t32_simulate_mrs},
+ [PROBES_T32_BRANCH_COND] = {.decoder = t32_decode_cond_branch},
+ [PROBES_T32_BRANCH] = {.handler = t32_simulate_branch},
+ [PROBES_T32_PLDI] = {.handler = kprobe_simulate_nop},
+ [PROBES_T32_LDR_LIT] = {.handler = t32_simulate_ldr_literal},
+ [PROBES_T32_LDRSTR] = {.handler = t32_emulate_ldrstr},
+ [PROBES_T32_SIGN_EXTEND] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_MEDIA] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_REVERSE] = {.handler = t32_emulate_rd8rn16_noflags},
+ [PROBES_T32_MUL_ADD] = {.handler = t32_emulate_rd8rn16rm0_rwflags},
+ [PROBES_T32_MUL_ADD2] = {.handler = t32_emulate_rd8rn16rm0ra12_noflags},
+ [PROBES_T32_MUL_ADD_LONG] = {.handler = t32_emulate_rdlo12rdhi8rn16rm0_noflags},
};
-#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
-EXPORT_SYMBOL_GPL(kprobe_decode_thumb16_table);
-#endif
-
-static unsigned long __kprobes thumb_check_cc(unsigned long cpsr)
-{
- if (unlikely(in_it_block(cpsr)))
- return kprobe_condition_checks[current_cond(cpsr)](cpsr);
- return true;
-}
-
-static void __kprobes thumb16_singlestep(struct kprobe *p, struct pt_regs *regs)
-{
- regs->ARM_pc += 2;
- p->ainsn.insn_handler(p, regs);
- regs->ARM_cpsr = it_advance(regs->ARM_cpsr);
-}
-
-static void __kprobes thumb32_singlestep(struct kprobe *p, struct pt_regs *regs)
-{
- regs->ARM_pc += 4;
- p->ainsn.insn_handler(p, regs);
- regs->ARM_cpsr = it_advance(regs->ARM_cpsr);
-}
-
-enum kprobe_insn __kprobes
-thumb16_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
-{
- asi->insn_singlestep = thumb16_singlestep;
- asi->insn_check_cc = thumb_check_cc;
- return kprobe_decode_insn(insn, asi, kprobe_decode_thumb16_table, true);
-}
-
-enum kprobe_insn __kprobes
-thumb32_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
-{
- asi->insn_singlestep = thumb32_singlestep;
- asi->insn_check_cc = thumb_check_cc;
- return kprobe_decode_insn(insn, asi, kprobe_decode_thumb32_table, true);
-}
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index e4bae21..c72d552 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -55,6 +55,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
unsigned long addr = (unsigned long)p->addr;
bool thumb;
kprobe_decode_insn_t *decode_insn;
+ const union decode_item *actions;
int is;
if (in_exception_text(addr))
@@ -68,20 +69,25 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
insn <<= 16;
insn |= ((u16 *)addr)[1];
decode_insn = thumb32_kprobe_decode_insn;
- } else
+ actions = kprobes_t32_actions;
+ } else {
decode_insn = thumb16_kprobe_decode_insn;
+ actions = kprobes_t16_actions;
+ }
#else /* !CONFIG_THUMB2_KERNEL */
thumb = false;
if (addr & 0x3)
return -EINVAL;
insn = *p->addr;
decode_insn = arm_kprobe_decode_insn;
+ actions = kprobes_arm_actions;
#endif
p->opcode = insn;
p->ainsn.insn = tmp_insn;
- switch ((*decode_insn)(insn, &p->ainsn)) {
+ switch ((*decode_insn)
+ (insn, &p->ainsn, (struct decode_header *) actions)) {
case INSN_REJECTED: /* not supported */
return -EINVAL;
diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h
index 7315830..77e4374 100644
--- a/arch/arm/kernel/kprobes.h
+++ b/arch/arm/kernel/kprobes.h
@@ -27,6 +27,7 @@
#define KPROBE_THUMB16_BREAKPOINT_INSTRUCTION 0xde18
#define KPROBE_THUMB32_BREAKPOINT_INSTRUCTION 0xf7f0a018
+struct decode_header;
enum kprobe_insn {
INSN_REJECTED,
@@ -35,19 +36,24 @@ enum kprobe_insn {
};
typedef enum kprobe_insn (kprobe_decode_insn_t)(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const struct decode_header *actions);
#ifdef CONFIG_THUMB2_KERNEL
enum kprobe_insn thumb16_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const struct decode_header *);
enum kprobe_insn thumb32_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const struct decode_header *);
#else /* !CONFIG_THUMB2_KERNEL */
enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
- struct arch_specific_insn *);
+ struct arch_specific_insn *,
+ const struct decode_header *);
+
#endif
void __init arm_kprobe_decode_init(void);
diff --git a/arch/arm/kernel/probes-arm.c b/arch/arm/kernel/probes-arm.c
index b2971a4..812be68 100644
--- a/arch/arm/kernel/probes-arm.c
+++ b/arch/arm/kernel/probes-arm.c
@@ -125,16 +125,16 @@ static const union decode_item arm_1111_table[] = {
/* PLDI (immediate) 1111 0100 x101 xxxx xxxx xxxx xxxx xxxx */
/* PLDW (immediate) 1111 0101 x001 xxxx xxxx xxxx xxxx xxxx */
/* PLD (immediate) 1111 0101 x101 xxxx xxxx xxxx xxxx xxxx */
- DECODE_SIMULATE (0xfe300000, 0xf4100000, kprobe_simulate_nop),
+ DECODE_SIMULATE (0xfe300000, 0xf4100000, PROBES_PRELOAD_IMM),
/* memory hint 1111 0110 x001 xxxx xxxx xxxx xxx0 xxxx */
/* PLDI (register) 1111 0110 x101 xxxx xxxx xxxx xxx0 xxxx */
/* PLDW (register) 1111 0111 x001 xxxx xxxx xxxx xxx0 xxxx */
/* PLD (register) 1111 0111 x101 xxxx xxxx xxxx xxx0 xxxx */
- DECODE_SIMULATE (0xfe300010, 0xf6100000, kprobe_simulate_nop),
+ DECODE_SIMULATE (0xfe300010, 0xf6100000, PROBES_PRELOAD_REG),
/* BLX (immediate) 1111 101x xxxx xxxx xxxx xxxx xxxx xxxx */
- DECODE_SIMULATE (0xfe000000, 0xfa000000, simulate_blx1),
+ DECODE_SIMULATE (0xfe000000, 0xfa000000, PROBES_BRANCH_IMM),
/* CPS 1111 0001 0000 xxx0 xxxx xxxx xx0x xxxx */
/* SETEND 1111 0001 0000 0001 xxxx xxxx 0000 xxxx */
@@ -158,25 +158,25 @@ static const union decode_item arm_cccc_0001_0xx0____0xxx_table[] = {
/* Miscellaneous instructions */
/* MRS cpsr cccc 0001 0000 xxxx xxxx xxxx 0000 xxxx */
- DECODE_SIMULATEX(0x0ff000f0, 0x01000000, simulate_mrs,
+ DECODE_SIMULATEX(0x0ff000f0, 0x01000000, PROBES_MRS,
REGS(0, NOPC, 0, 0, 0)),
/* BX cccc 0001 0010 xxxx xxxx xxxx 0001 xxxx */
- DECODE_SIMULATE (0x0ff000f0, 0x01200010, simulate_blx2bx),
+ DECODE_SIMULATE (0x0ff000f0, 0x01200010, PROBES_BRANCH_REG),
/* BLX (register) cccc 0001 0010 xxxx xxxx xxxx 0011 xxxx */
- DECODE_SIMULATEX(0x0ff000f0, 0x01200030, simulate_blx2bx,
+ DECODE_SIMULATEX(0x0ff000f0, 0x01200030, PROBES_BRANCH_REG,
REGS(0, 0, 0, 0, NOPC)),
/* CLZ cccc 0001 0110 xxxx xxxx xxxx 0001 xxxx */
- DECODE_EMULATEX (0x0ff000f0, 0x01600010, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0ff000f0, 0x01600010, PROBES_CLZ,
REGS(0, NOPC, 0, 0, NOPC)),
/* QADD cccc 0001 0000 xxxx xxxx xxxx 0101 xxxx */
/* QSUB cccc 0001 0010 xxxx xxxx xxxx 0101 xxxx */
/* QDADD cccc 0001 0100 xxxx xxxx xxxx 0101 xxxx */
/* QDSUB cccc 0001 0110 xxxx xxxx xxxx 0101 xxxx */
- DECODE_EMULATEX (0x0f9000f0, 0x01000050, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0f9000f0, 0x01000050, PROBES_SATURATING_ARITHMETIC,
REGS(NOPC, NOPC, 0, 0, NOPC)),
/* BXJ cccc 0001 0010 xxxx xxxx xxxx 0010 xxxx */
@@ -192,19 +192,19 @@ static const union decode_item arm_cccc_0001_0xx0____1xx0_table[] = {
/* Halfword multiply and multiply-accumulate */
/* SMLALxy cccc 0001 0100 xxxx xxxx xxxx 1xx0 xxxx */
- DECODE_EMULATEX (0x0ff00090, 0x01400080, emulate_rdlo12rdhi16rn0rm8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff00090, 0x01400080, PROBES_MUL1,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
/* SMULWy cccc 0001 0010 xxxx xxxx xxxx 1x10 xxxx */
DECODE_OR (0x0ff000b0, 0x012000a0),
/* SMULxy cccc 0001 0110 xxxx xxxx xxxx 1xx0 xxxx */
- DECODE_EMULATEX (0x0ff00090, 0x01600080, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff00090, 0x01600080, PROBES_MUL2,
REGS(NOPC, 0, NOPC, 0, NOPC)),
/* SMLAxy cccc 0001 0000 xxxx xxxx xxxx 1xx0 xxxx */
DECODE_OR (0x0ff00090, 0x01000080),
/* SMLAWy cccc 0001 0010 xxxx xxxx xxxx 1x00 xxxx */
- DECODE_EMULATEX (0x0ff000b0, 0x01200080, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff000b0, 0x01200080, PROBES_MUL2,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
DECODE_END
@@ -215,14 +215,14 @@ static const union decode_item arm_cccc_0000_____1001_table[] = {
/* MUL cccc 0000 0000 xxxx xxxx xxxx 1001 xxxx */
/* MULS cccc 0000 0001 xxxx xxxx xxxx 1001 xxxx */
- DECODE_EMULATEX (0x0fe000f0, 0x00000090, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0fe000f0, 0x00000090, PROBES_MUL2,
REGS(NOPC, 0, NOPC, 0, NOPC)),
/* MLA cccc 0000 0010 xxxx xxxx xxxx 1001 xxxx */
/* MLAS cccc 0000 0011 xxxx xxxx xxxx 1001 xxxx */
DECODE_OR (0x0fe000f0, 0x00200090),
/* MLS cccc 0000 0110 xxxx xxxx xxxx 1001 xxxx */
- DECODE_EMULATEX (0x0ff000f0, 0x00600090, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff000f0, 0x00600090, PROBES_MUL2,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
/* UMAAL cccc 0000 0100 xxxx xxxx xxxx 1001 xxxx */
@@ -235,7 +235,7 @@ static const union decode_item arm_cccc_0000_____1001_table[] = {
/* SMULLS cccc 0000 1101 xxxx xxxx xxxx 1001 xxxx */
/* SMLAL cccc 0000 1110 xxxx xxxx xxxx 1001 xxxx */
/* SMLALS cccc 0000 1111 xxxx xxxx xxxx 1001 xxxx */
- DECODE_EMULATEX (0x0f8000f0, 0x00800090, emulate_rdlo12rdhi16rn0rm8_rwflags_nopc,
+ DECODE_EMULATEX (0x0f8000f0, 0x00800090, PROBES_MUL1,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
DECODE_END
@@ -247,7 +247,7 @@ static const union decode_item arm_cccc_0001_____1001_table[] = {
#if __LINUX_ARM_ARCH__ < 6
/* Deprecated on ARMv6 and may be UNDEFINED on v7 */
/* SMP/SWPB cccc 0001 0x00 xxxx xxxx xxxx 1001 xxxx */
- DECODE_EMULATEX (0x0fb000f0, 0x01000090, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0fb000f0, 0x01000090, PROBES_SWP,
REGS(NOPC, NOPC, 0, 0, NOPC)),
#endif
/* LDREX/STREX{,D,B,H} cccc 0001 1xxx xxxx xxxx xxxx 1001 xxxx */
@@ -270,32 +270,32 @@ static const union decode_item arm_cccc_000x_____1xx1_table[] = {
/* LDRD (register) cccc 000x x0x0 xxxx xxxx xxxx 1101 xxxx */
/* STRD (register) cccc 000x x0x0 xxxx xxxx xxxx 1111 xxxx */
- DECODE_EMULATEX (0x0e5000d0, 0x000000d0, emulate_ldrdstrd,
+ DECODE_EMULATEX (0x0e5000d0, 0x000000d0, PROBES_LDRSTRD,
REGS(NOPCWB, NOPCX, 0, 0, NOPC)),
/* LDRD (immediate) cccc 000x x1x0 xxxx xxxx xxxx 1101 xxxx */
/* STRD (immediate) cccc 000x x1x0 xxxx xxxx xxxx 1111 xxxx */
- DECODE_EMULATEX (0x0e5000d0, 0x004000d0, emulate_ldrdstrd,
+ DECODE_EMULATEX (0x0e5000d0, 0x004000d0, PROBES_LDRSTRD,
REGS(NOPCWB, NOPCX, 0, 0, 0)),
/* STRH (register) cccc 000x x0x0 xxxx xxxx xxxx 1011 xxxx */
- DECODE_EMULATEX (0x0e5000f0, 0x000000b0, emulate_str,
+ DECODE_EMULATEX (0x0e5000f0, 0x000000b0, PROBES_STORE_EXTRA,
REGS(NOPCWB, NOPC, 0, 0, NOPC)),
/* LDRH (register) cccc 000x x0x1 xxxx xxxx xxxx 1011 xxxx */
/* LDRSB (register) cccc 000x x0x1 xxxx xxxx xxxx 1101 xxxx */
/* LDRSH (register) cccc 000x x0x1 xxxx xxxx xxxx 1111 xxxx */
- DECODE_EMULATEX (0x0e500090, 0x00100090, emulate_ldr,
+ DECODE_EMULATEX (0x0e500090, 0x00100090, PROBES_LOAD_EXTRA,
REGS(NOPCWB, NOPC, 0, 0, NOPC)),
/* STRH (immediate) cccc 000x x1x0 xxxx xxxx xxxx 1011 xxxx */
- DECODE_EMULATEX (0x0e5000f0, 0x004000b0, emulate_str,
+ DECODE_EMULATEX (0x0e5000f0, 0x004000b0, PROBES_STORE_EXTRA,
REGS(NOPCWB, NOPC, 0, 0, 0)),
/* LDRH (immediate) cccc 000x x1x1 xxxx xxxx xxxx 1011 xxxx */
/* LDRSB (immediate) cccc 000x x1x1 xxxx xxxx xxxx 1101 xxxx */
/* LDRSH (immediate) cccc 000x x1x1 xxxx xxxx xxxx 1111 xxxx */
- DECODE_EMULATEX (0x0e500090, 0x00500090, emulate_ldr,
+ DECODE_EMULATEX (0x0e500090, 0x00500090, PROBES_LOAD_EXTRA,
REGS(NOPCWB, NOPC, 0, 0, 0)),
DECODE_END
@@ -308,18 +308,18 @@ static const union decode_item arm_cccc_000x_table[] = {
DECODE_REJECT (0x0e10f000, 0x0010f000),
/* MOV IP, SP 1110 0001 1010 0000 1100 0000 0000 1101 */
- DECODE_SIMULATE (0xffffffff, 0xe1a0c00d, simulate_mov_ipsp),
+ DECODE_SIMULATE (0xffffffff, 0xe1a0c00d, PROBES_MOV_IP_SP),
/* TST (register) cccc 0001 0001 xxxx xxxx xxxx xxx0 xxxx */
/* TEQ (register) cccc 0001 0011 xxxx xxxx xxxx xxx0 xxxx */
/* CMP (register) cccc 0001 0101 xxxx xxxx xxxx xxx0 xxxx */
/* CMN (register) cccc 0001 0111 xxxx xxxx xxxx xxx0 xxxx */
- DECODE_EMULATEX (0x0f900010, 0x01100000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0f900010, 0x01100000, PROBES_DATA_PROCESSING_REG,
REGS(ANY, 0, 0, 0, ANY)),
/* MOV (register) cccc 0001 101x xxxx xxxx xxxx xxx0 xxxx */
/* MVN (register) cccc 0001 111x xxxx xxxx xxxx xxx0 xxxx */
- DECODE_EMULATEX (0x0fa00010, 0x01a00000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0fa00010, 0x01a00000, PROBES_DATA_PROCESSING_REG,
REGS(0, ANY, 0, 0, ANY)),
/* AND (register) cccc 0000 000x xxxx xxxx xxxx xxx0 xxxx */
@@ -332,19 +332,19 @@ static const union decode_item arm_cccc_000x_table[] = {
/* RSC (register) cccc 0000 111x xxxx xxxx xxxx xxx0 xxxx */
/* ORR (register) cccc 0001 100x xxxx xxxx xxxx xxx0 xxxx */
/* BIC (register) cccc 0001 110x xxxx xxxx xxxx xxx0 xxxx */
- DECODE_EMULATEX (0x0e000010, 0x00000000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0e000010, 0x00000000, PROBES_DATA_PROCESSING_REG,
REGS(ANY, ANY, 0, 0, ANY)),
/* TST (reg-shift reg) cccc 0001 0001 xxxx xxxx xxxx 0xx1 xxxx */
/* TEQ (reg-shift reg) cccc 0001 0011 xxxx xxxx xxxx 0xx1 xxxx */
/* CMP (reg-shift reg) cccc 0001 0101 xxxx xxxx xxxx 0xx1 xxxx */
/* CMN (reg-shift reg) cccc 0001 0111 xxxx xxxx xxxx 0xx1 xxxx */
- DECODE_EMULATEX (0x0f900090, 0x01100010, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0f900090, 0x01100010, PROBES_DATA_PROCESSING_REG,
REGS(ANY, 0, NOPC, 0, ANY)),
/* MOV (reg-shift reg) cccc 0001 101x xxxx xxxx xxxx 0xx1 xxxx */
/* MVN (reg-shift reg) cccc 0001 111x xxxx xxxx xxxx 0xx1 xxxx */
- DECODE_EMULATEX (0x0fa00090, 0x01a00010, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0fa00090, 0x01a00010, PROBES_DATA_PROCESSING_REG,
REGS(0, ANY, NOPC, 0, ANY)),
/* AND (reg-shift reg) cccc 0000 000x xxxx xxxx xxxx 0xx1 xxxx */
@@ -357,7 +357,7 @@ static const union decode_item arm_cccc_000x_table[] = {
/* RSC (reg-shift reg) cccc 0000 111x xxxx xxxx xxxx 0xx1 xxxx */
/* ORR (reg-shift reg) cccc 0001 100x xxxx xxxx xxxx 0xx1 xxxx */
/* BIC (reg-shift reg) cccc 0001 110x xxxx xxxx xxxx 0xx1 xxxx */
- DECODE_EMULATEX (0x0e000090, 0x00000010, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0e000090, 0x00000010, PROBES_DATA_PROCESSING_REG,
REGS(ANY, ANY, NOPC, 0, ANY)),
DECODE_END
@@ -368,17 +368,17 @@ static const union decode_item arm_cccc_001x_table[] = {
/* MOVW cccc 0011 0000 xxxx xxxx xxxx xxxx xxxx */
/* MOVT cccc 0011 0100 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0fb00000, 0x03000000, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0fb00000, 0x03000000, PROBES_DATA_PROCESSING_IMM,
REGS(0, NOPC, 0, 0, 0)),
/* YIELD cccc 0011 0010 0000 xxxx xxxx 0000 0001 */
DECODE_OR (0x0fff00ff, 0x03200001),
/* SEV cccc 0011 0010 0000 xxxx xxxx 0000 0100 */
- DECODE_EMULATE (0x0fff00ff, 0x03200004, kprobe_emulate_none),
+ DECODE_EMULATE (0x0fff00ff, 0x03200004, PROBES_EMULATE_NONE),
/* NOP cccc 0011 0010 0000 xxxx xxxx 0000 0000 */
/* WFE cccc 0011 0010 0000 xxxx xxxx 0000 0010 */
/* WFI cccc 0011 0010 0000 xxxx xxxx 0000 0011 */
- DECODE_SIMULATE (0x0fff00fc, 0x03200000, kprobe_simulate_nop),
+ DECODE_SIMULATE (0x0fff00fc, 0x03200000, PROBES_SIMULATE_NOP),
/* DBG cccc 0011 0010 0000 xxxx xxxx ffff xxxx */
/* unallocated hints cccc 0011 0010 0000 xxxx xxxx xxxx xxxx */
/* MSR (immediate) cccc 0011 0x10 xxxx xxxx xxxx xxxx xxxx */
@@ -391,12 +391,12 @@ static const union decode_item arm_cccc_001x_table[] = {
/* TEQ (immediate) cccc 0011 0011 xxxx xxxx xxxx xxxx xxxx */
/* CMP (immediate) cccc 0011 0101 xxxx xxxx xxxx xxxx xxxx */
/* CMN (immediate) cccc 0011 0111 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0f900000, 0x03100000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0f900000, 0x03100000, PROBES_DATA_PROCESSING_IMM,
REGS(ANY, 0, 0, 0, 0)),
/* MOV (immediate) cccc 0011 101x xxxx xxxx xxxx xxxx xxxx */
/* MVN (immediate) cccc 0011 111x xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0fa00000, 0x03a00000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0fa00000, 0x03a00000, PROBES_DATA_PROCESSING_IMM,
REGS(0, ANY, 0, 0, 0)),
/* AND (immediate) cccc 0010 000x xxxx xxxx xxxx xxxx xxxx */
@@ -409,7 +409,7 @@ static const union decode_item arm_cccc_001x_table[] = {
/* RSC (immediate) cccc 0010 111x xxxx xxxx xxxx xxxx xxxx */
/* ORR (immediate) cccc 0011 100x xxxx xxxx xxxx xxxx xxxx */
/* BIC (immediate) cccc 0011 110x xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0e000000, 0x02000000, emulate_rd12rn16rm0rs8_rwflags,
+ DECODE_EMULATEX (0x0e000000, 0x02000000, PROBES_DATA_PROCESSING_IMM,
REGS(ANY, ANY, 0, 0, 0)),
DECODE_END
@@ -419,7 +419,7 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
/* Media instructions */
/* SEL cccc 0110 1000 xxxx xxxx xxxx 1011 xxxx */
- DECODE_EMULATEX (0x0ff000f0, 0x068000b0, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff000f0, 0x068000b0, PROBES_SATURATE,
REGS(NOPC, NOPC, 0, 0, NOPC)),
/* SSAT cccc 0110 101x xxxx xxxx xxxx xx01 xxxx */
@@ -427,14 +427,14 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
DECODE_OR(0x0fa00030, 0x06a00010),
/* SSAT16 cccc 0110 1010 xxxx xxxx xxxx 0011 xxxx */
/* USAT16 cccc 0110 1110 xxxx xxxx xxxx 0011 xxxx */
- DECODE_EMULATEX (0x0fb000f0, 0x06a00030, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0fb000f0, 0x06a00030, PROBES_SATURATE,
REGS(0, NOPC, 0, 0, NOPC)),
/* REV cccc 0110 1011 xxxx xxxx xxxx 0011 xxxx */
/* REV16 cccc 0110 1011 xxxx xxxx xxxx 1011 xxxx */
/* RBIT cccc 0110 1111 xxxx xxxx xxxx 0011 xxxx */
/* REVSH cccc 0110 1111 xxxx xxxx xxxx 1011 xxxx */
- DECODE_EMULATEX (0x0fb00070, 0x06b00030, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0fb00070, 0x06b00030, PROBES_REV,
REGS(0, NOPC, 0, 0, NOPC)),
/* ??? cccc 0110 0x00 xxxx xxxx xxxx xxx1 xxxx */
@@ -479,12 +479,12 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
/* UHSUB16 cccc 0110 0111 xxxx xxxx xxxx 0111 xxxx */
/* UHADD8 cccc 0110 0111 xxxx xxxx xxxx 1001 xxxx */
/* UHSUB8 cccc 0110 0111 xxxx xxxx xxxx 1111 xxxx */
- DECODE_EMULATEX (0x0f800010, 0x06000010, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0f800010, 0x06000010, PROBES_MMI,
REGS(NOPC, NOPC, 0, 0, NOPC)),
/* PKHBT cccc 0110 1000 xxxx xxxx xxxx x001 xxxx */
/* PKHTB cccc 0110 1000 xxxx xxxx xxxx x101 xxxx */
- DECODE_EMULATEX (0x0ff00030, 0x06800010, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff00030, 0x06800010, PROBES_PACK,
REGS(NOPC, NOPC, 0, 0, NOPC)),
/* ??? cccc 0110 1001 xxxx xxxx xxxx 0111 xxxx */
@@ -497,7 +497,7 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
/* UXTB16 cccc 0110 1100 1111 xxxx xxxx 0111 xxxx */
/* UXTB cccc 0110 1110 1111 xxxx xxxx 0111 xxxx */
/* UXTH cccc 0110 1111 1111 xxxx xxxx 0111 xxxx */
- DECODE_EMULATEX (0x0f8f00f0, 0x068f0070, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0f8f00f0, 0x068f0070, PROBES_EXTEND,
REGS(0, NOPC, 0, 0, NOPC)),
/* SXTAB16 cccc 0110 1000 xxxx xxxx xxxx 0111 xxxx */
@@ -506,7 +506,7 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
/* UXTAB16 cccc 0110 1100 xxxx xxxx xxxx 0111 xxxx */
/* UXTAB cccc 0110 1110 xxxx xxxx xxxx 0111 xxxx */
/* UXTAH cccc 0110 1111 xxxx xxxx xxxx 0111 xxxx */
- DECODE_EMULATEX (0x0f8000f0, 0x06800070, emulate_rd12rn16rm0_rwflags_nopc,
+ DECODE_EMULATEX (0x0f8000f0, 0x06800070, PROBES_EXTEND_ADD,
REGS(NOPCX, NOPC, 0, 0, NOPC)),
DECODE_END
@@ -520,7 +520,7 @@ static const union decode_item arm_cccc_0111_____xxx1_table[] = {
/* SMLALD cccc 0111 0100 xxxx xxxx xxxx 00x1 xxxx */
/* SMLSLD cccc 0111 0100 xxxx xxxx xxxx 01x1 xxxx */
- DECODE_EMULATEX (0x0ff00090, 0x07400010, emulate_rdlo12rdhi16rn0rm8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff00090, 0x07400010, PROBES_MUL_ADD_LONG,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
/* SMUAD cccc 0111 0000 xxxx 1111 xxxx 00x1 xxxx */
@@ -529,7 +529,7 @@ static const union decode_item arm_cccc_0111_____xxx1_table[] = {
/* SMMUL cccc 0111 0101 xxxx 1111 xxxx 00x1 xxxx */
DECODE_OR (0x0ff0f0d0, 0x0750f010),
/* USAD8 cccc 0111 1000 xxxx 1111 xxxx 0001 xxxx */
- DECODE_EMULATEX (0x0ff0f0f0, 0x0780f010, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff0f0f0, 0x0780f010, PROBES_MUL_ADD,
REGS(NOPC, 0, NOPC, 0, NOPC)),
/* SMLAD cccc 0111 0000 xxxx xxxx xxxx 00x1 xxxx */
@@ -538,24 +538,24 @@ static const union decode_item arm_cccc_0111_____xxx1_table[] = {
/* SMMLA cccc 0111 0101 xxxx xxxx xxxx 00x1 xxxx */
DECODE_OR (0x0ff000d0, 0x07500010),
/* USADA8 cccc 0111 1000 xxxx xxxx xxxx 0001 xxxx */
- DECODE_EMULATEX (0x0ff000f0, 0x07800010, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff000f0, 0x07800010, PROBES_MUL_ADD,
REGS(NOPC, NOPCX, NOPC, 0, NOPC)),
/* SMMLS cccc 0111 0101 xxxx xxxx xxxx 11x1 xxxx */
- DECODE_EMULATEX (0x0ff000d0, 0x075000d0, emulate_rd16rn12rm0rs8_rwflags_nopc,
+ DECODE_EMULATEX (0x0ff000d0, 0x075000d0, PROBES_MUL_ADD,
REGS(NOPC, NOPC, NOPC, 0, NOPC)),
/* SBFX cccc 0111 101x xxxx xxxx xxxx x101 xxxx */
/* UBFX cccc 0111 111x xxxx xxxx xxxx x101 xxxx */
- DECODE_EMULATEX (0x0fa00070, 0x07a00050, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0fa00070, 0x07a00050, PROBES_BITFIELD,
REGS(0, NOPC, 0, 0, NOPC)),
/* BFC cccc 0111 110x xxxx xxxx xxxx x001 1111 */
- DECODE_EMULATEX (0x0fe0007f, 0x07c0001f, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0fe0007f, 0x07c0001f, PROBES_BITFIELD,
REGS(0, NOPC, 0, 0, 0)),
/* BFI cccc 0111 110x xxxx xxxx xxxx x001 xxxx */
- DECODE_EMULATEX (0x0fe00070, 0x07c00010, emulate_rd12rm0_noflags_nopc,
+ DECODE_EMULATEX (0x0fe00070, 0x07c00010, PROBES_BITFIELD,
REGS(0, NOPC, 0, 0, NOPCX)),
DECODE_END
@@ -575,22 +575,22 @@ static const union decode_item arm_cccc_01xx_table[] = {
/* STR (immediate) cccc 010x x0x0 xxxx xxxx xxxx xxxx xxxx */
/* STRB (immediate) cccc 010x x1x0 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0e100000, 0x04000000, emulate_str,
+ DECODE_EMULATEX (0x0e100000, 0x04000000, PROBES_STORE,
REGS(NOPCWB, ANY, 0, 0, 0)),
/* LDR (immediate) cccc 010x x0x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRB (immediate) cccc 010x x1x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0e100000, 0x04100000, emulate_ldr,
+ DECODE_EMULATEX (0x0e100000, 0x04100000, PROBES_LOAD,
REGS(NOPCWB, ANY, 0, 0, 0)),
/* STR (register) cccc 011x x0x0 xxxx xxxx xxxx xxxx xxxx */
/* STRB (register) cccc 011x x1x0 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0e100000, 0x06000000, emulate_str,
+ DECODE_EMULATEX (0x0e100000, 0x06000000, PROBES_STORE,
REGS(NOPCWB, ANY, 0, 0, NOPC)),
/* LDR (register) cccc 011x x0x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRB (register) cccc 011x x1x1 xxxx xxxx xxxx xxxx xxxx */
- DECODE_EMULATEX (0x0e100000, 0x06100000, emulate_ldr,
+ DECODE_EMULATEX (0x0e100000, 0x06100000, PROBES_LOAD,
REGS(NOPCWB, ANY, 0, 0, NOPC)),
DECODE_END
@@ -601,7 +601,7 @@ static const union decode_item arm_cccc_100x_table[] = {
/* LDM cccc 100x x0x1 xxxx xxxx xxxx xxxx xxxx */
/* STM cccc 100x x0x0 xxxx xxxx xxxx xxxx xxxx */
- DECODE_CUSTOM (0x0e400000, 0x08000000, kprobe_decode_ldmstm),
+ DECODE_CUSTOM (0x0e400000, 0x08000000, PROBES_LDMSTM),
/* STM (user registers) cccc 100x x1x0 xxxx xxxx xxxx xxxx xxxx */
/* LDM (user registers) cccc 100x x1x1 xxxx 0xxx xxxx xxxx xxxx */
@@ -681,7 +681,7 @@ const union decode_item kprobe_decode_arm_table[] = {
/* B cccc 1010 xxxx xxxx xxxx xxxx xxxx xxxx */
/* BL cccc 1011 xxxx xxxx xxxx xxxx xxxx xxxx */
- DECODE_SIMULATE (0x0e000000, 0x0a000000, simulate_bbl),
+ DECODE_SIMULATE (0x0e000000, 0x0a000000, PROBES_BRANCH),
/*
* Supervisor Call, and coprocessor instructions
@@ -722,9 +722,11 @@ static void __kprobes arm_singlestep(struct kprobe *p, struct pt_regs *regs)
* should also be very rare.
*/
enum kprobe_insn __kprobes
-arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *actions)
{
asi->insn_singlestep = arm_singlestep;
asi->insn_check_cc = kprobe_condition_checks[insn>>28];
- return kprobe_decode_insn(insn, asi, kprobe_decode_arm_table, false);
+ return kprobe_decode_insn(insn, asi, kprobe_decode_arm_table, false,
+ (const union decode_item *) actions);
}
diff --git a/arch/arm/kernel/probes-arm.h b/arch/arm/kernel/probes-arm.h
index 8608472..f8e0f7a 100644
--- a/arch/arm/kernel/probes-arm.h
+++ b/arch/arm/kernel/probes-arm.h
@@ -15,6 +15,43 @@
#ifndef _ARM_KERNEL_PROBES_ARM_H
#define _ARM_KERNEL_PROBES_ARM_H
+enum probes_arm_action {
+ PROBES_EMULATE_NONE,
+ PROBES_SIMULATE_NOP,
+ PROBES_PRELOAD_IMM,
+ PROBES_PRELOAD_REG,
+ PROBES_BRANCH_IMM,
+ PROBES_BRANCH_REG,
+ PROBES_MRS,
+ PROBES_CLZ,
+ PROBES_SATURATING_ARITHMETIC,
+ PROBES_MUL1,
+ PROBES_MUL2,
+ PROBES_SWP,
+ PROBES_LDRSTRD,
+ PROBES_LOAD,
+ PROBES_STORE,
+ PROBES_LOAD_EXTRA,
+ PROBES_STORE_EXTRA,
+ PROBES_MOV_IP_SP,
+ PROBES_DATA_PROCESSING_REG,
+ PROBES_DATA_PROCESSING_IMM,
+ PROBES_MOV_HALFWORD,
+ PROBES_SEV,
+ PROBES_WFE,
+ PROBES_SATURATE,
+ PROBES_REV,
+ PROBES_MMI,
+ PROBES_PACK,
+ PROBES_EXTEND,
+ PROBES_EXTEND_ADD,
+ PROBES_MUL_ADD_LONG,
+ PROBES_MUL_ADD,
+ PROBES_BITFIELD,
+ PROBES_BRANCH,
+ PROBES_LDMSTM
+};
+
void __kprobes simulate_bbl(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_blx1(struct kprobe *p, struct pt_regs *regs);
void __kprobes simulate_blx2bx(struct kprobe *p, struct pt_regs *regs);
diff --git a/arch/arm/kernel/probes-thumb.c b/arch/arm/kernel/probes-thumb.c
new file mode 100644
index 0000000..5d6048c
--- /dev/null
+++ b/arch/arm/kernel/probes-thumb.c
@@ -0,0 +1,875 @@
+/*
+ * arch/arm/kernel/kprobes-thumb.c
+ *
+ * Copyright (C) 2011 Jon Medhurst <tixy@...t.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/kprobes.h>
+#include <linux/module.h>
+
+#include "kprobes.h"
+#include "probes.h"
+#include "probes-thumb.h"
+
+
+static const union decode_item t32_table_1110_100x_x0xx[] = {
+ /* Load/store multiple instructions */
+
+ /* Rn is PC 1110 100x x0xx 1111 xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfe4f0000, 0xe80f0000),
+
+ /* SRS 1110 1000 00x0 xxxx xxxx xxxx xxxx xxxx */
+ /* RFE 1110 1000 00x1 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffc00000, 0xe8000000),
+ /* SRS 1110 1001 10x0 xxxx xxxx xxxx xxxx xxxx */
+ /* RFE 1110 1001 10x1 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffc00000, 0xe9800000),
+
+ /* STM Rn, {...pc} 1110 100x x0x0 xxxx 1xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfe508000, 0xe8008000),
+ /* LDM Rn, {...lr,pc} 1110 100x x0x1 xxxx 11xx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfe50c000, 0xe810c000),
+ /* LDM/STM Rn, {...sp} 1110 100x x0xx xxxx xx1x xxxx xxxx xxxx */
+ DECODE_REJECT (0xfe402000, 0xe8002000),
+
+ /* STMIA 1110 1000 10x0 xxxx xxxx xxxx xxxx xxxx */
+ /* LDMIA 1110 1000 10x1 xxxx xxxx xxxx xxxx xxxx */
+ /* STMDB 1110 1001 00x0 xxxx xxxx xxxx xxxx xxxx */
+ /* LDMDB 1110 1001 00x1 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_CUSTOM (0xfe400000, 0xe8000000, PROBES_T32_LDMSTM),
+
+ DECODE_END
+};
+
+static const union decode_item t32_table_1110_100x_x1xx[] = {
+ /* Load/store dual, load/store exclusive, table branch */
+
+ /* STRD (immediate) 1110 1000 x110 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRD (immediate) 1110 1000 x111 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_OR (0xff600000, 0xe8600000),
+ /* STRD (immediate) 1110 1001 x1x0 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRD (immediate) 1110 1001 x1x1 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xff400000, 0xe9400000, PROBES_T32_LDRDSTRD,
+ REGS(NOPCWB, NOSPPC, NOSPPC, 0, 0)),
+
+ /* TBB 1110 1000 1101 xxxx xxxx xxxx 0000 xxxx */
+ /* TBH 1110 1000 1101 xxxx xxxx xxxx 0001 xxxx */
+ DECODE_SIMULATEX(0xfff000e0, 0xe8d00000, PROBES_T32_TABLE_BRANCH,
+ REGS(NOSP, 0, 0, 0, NOSPPC)),
+
+ /* STREX 1110 1000 0100 xxxx xxxx xxxx xxxx xxxx */
+ /* LDREX 1110 1000 0101 xxxx xxxx xxxx xxxx xxxx */
+ /* STREXB 1110 1000 1100 xxxx xxxx xxxx 0100 xxxx */
+ /* STREXH 1110 1000 1100 xxxx xxxx xxxx 0101 xxxx */
+ /* STREXD 1110 1000 1100 xxxx xxxx xxxx 0111 xxxx */
+ /* LDREXB 1110 1000 1101 xxxx xxxx xxxx 0100 xxxx */
+ /* LDREXH 1110 1000 1101 xxxx xxxx xxxx 0101 xxxx */
+ /* LDREXD 1110 1000 1101 xxxx xxxx xxxx 0111 xxxx */
+ /* And unallocated instructions... */
+ DECODE_END
+};
+
+static const union decode_item t32_table_1110_101x[] = {
+ /* Data-processing (shifted register) */
+
+ /* TST 1110 1010 0001 xxxx xxxx 1111 xxxx xxxx */
+ /* TEQ 1110 1010 1001 xxxx xxxx 1111 xxxx xxxx */
+ DECODE_EMULATEX (0xff700f00, 0xea100f00, PROBES_T32_TST,
+ REGS(NOSPPC, 0, 0, 0, NOSPPC)),
+
+ /* CMN 1110 1011 0001 xxxx xxxx 1111 xxxx xxxx */
+ DECODE_OR (0xfff00f00, 0xeb100f00),
+ /* CMP 1110 1011 1011 xxxx xxxx 1111 xxxx xxxx */
+ DECODE_EMULATEX (0xfff00f00, 0xebb00f00, PROBES_T32_TST,
+ REGS(NOPC, 0, 0, 0, NOSPPC)),
+
+ /* MOV 1110 1010 010x 1111 xxxx xxxx xxxx xxxx */
+ /* MVN 1110 1010 011x 1111 xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xffcf0000, 0xea4f0000, PROBES_T32_MOV,
+ REGS(0, 0, NOSPPC, 0, NOSPPC)),
+
+ /* ??? 1110 1010 101x xxxx xxxx xxxx xxxx xxxx */
+ /* ??? 1110 1010 111x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffa00000, 0xeaa00000),
+ /* ??? 1110 1011 001x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffe00000, 0xeb200000),
+ /* ??? 1110 1011 100x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffe00000, 0xeb800000),
+ /* ??? 1110 1011 111x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xffe00000, 0xebe00000),
+
+ /* ADD/SUB SP, SP, Rm, LSL #0..3 */
+ /* 1110 1011 x0xx 1101 x000 1101 xx00 xxxx */
+ DECODE_EMULATEX (0xff4f7f30, 0xeb0d0d00, PROBES_T32_ADDSUB,
+ REGS(SP, 0, SP, 0, NOSPPC)),
+
+ /* ADD/SUB SP, SP, Rm, shift */
+ /* 1110 1011 x0xx 1101 xxxx 1101 xxxx xxxx */
+ DECODE_REJECT (0xff4f0f00, 0xeb0d0d00),
+
+ /* ADD/SUB Rd, SP, Rm, shift */
+ /* 1110 1011 x0xx 1101 xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xff4f0000, 0xeb0d0000, PROBES_T32_ADDSUB,
+ REGS(SP, 0, NOPC, 0, NOSPPC)),
+
+ /* AND 1110 1010 000x xxxx xxxx xxxx xxxx xxxx */
+ /* BIC 1110 1010 001x xxxx xxxx xxxx xxxx xxxx */
+ /* ORR 1110 1010 010x xxxx xxxx xxxx xxxx xxxx */
+ /* ORN 1110 1010 011x xxxx xxxx xxxx xxxx xxxx */
+ /* EOR 1110 1010 100x xxxx xxxx xxxx xxxx xxxx */
+ /* PKH 1110 1010 110x xxxx xxxx xxxx xxxx xxxx */
+ /* ADD 1110 1011 000x xxxx xxxx xxxx xxxx xxxx */
+ /* ADC 1110 1011 010x xxxx xxxx xxxx xxxx xxxx */
+ /* SBC 1110 1011 011x xxxx xxxx xxxx xxxx xxxx */
+ /* SUB 1110 1011 101x xxxx xxxx xxxx xxxx xxxx */
+ /* RSB 1110 1011 110x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfe000000, 0xea000000, PROBES_T32_LOGICAL,
+ REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
+
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_0x0x___0[] = {
+ /* Data-processing (modified immediate) */
+
+ /* TST 1111 0x00 0001 xxxx 0xxx 1111 xxxx xxxx */
+ /* TEQ 1111 0x00 1001 xxxx 0xxx 1111 xxxx xxxx */
+ DECODE_EMULATEX (0xfb708f00, 0xf0100f00, PROBES_T32_TST,
+ REGS(NOSPPC, 0, 0, 0, 0)),
+
+ /* CMN 1111 0x01 0001 xxxx 0xxx 1111 xxxx xxxx */
+ DECODE_OR (0xfbf08f00, 0xf1100f00),
+ /* CMP 1111 0x01 1011 xxxx 0xxx 1111 xxxx xxxx */
+ DECODE_EMULATEX (0xfbf08f00, 0xf1b00f00, PROBES_T32_CMP,
+ REGS(NOPC, 0, 0, 0, 0)),
+
+ /* MOV 1111 0x00 010x 1111 0xxx xxxx xxxx xxxx */
+ /* MVN 1111 0x00 011x 1111 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfbcf8000, 0xf04f0000, PROBES_T32_MOV,
+ REGS(0, 0, NOSPPC, 0, 0)),
+
+ /* ??? 1111 0x00 101x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfbe08000, 0xf0a00000),
+ /* ??? 1111 0x00 110x xxxx 0xxx xxxx xxxx xxxx */
+ /* ??? 1111 0x00 111x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfbc08000, 0xf0c00000),
+ /* ??? 1111 0x01 001x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfbe08000, 0xf1200000),
+ /* ??? 1111 0x01 100x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfbe08000, 0xf1800000),
+ /* ??? 1111 0x01 111x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfbe08000, 0xf1e00000),
+
+ /* ADD Rd, SP, #imm 1111 0x01 000x 1101 0xxx xxxx xxxx xxxx */
+ /* SUB Rd, SP, #imm 1111 0x01 101x 1101 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfb4f8000, 0xf10d0000, PROBES_T32_ADDSUB,
+ REGS(SP, 0, NOPC, 0, 0)),
+
+ /* AND 1111 0x00 000x xxxx 0xxx xxxx xxxx xxxx */
+ /* BIC 1111 0x00 001x xxxx 0xxx xxxx xxxx xxxx */
+ /* ORR 1111 0x00 010x xxxx 0xxx xxxx xxxx xxxx */
+ /* ORN 1111 0x00 011x xxxx 0xxx xxxx xxxx xxxx */
+ /* EOR 1111 0x00 100x xxxx 0xxx xxxx xxxx xxxx */
+ /* ADD 1111 0x01 000x xxxx 0xxx xxxx xxxx xxxx */
+ /* ADC 1111 0x01 010x xxxx 0xxx xxxx xxxx xxxx */
+ /* SBC 1111 0x01 011x xxxx 0xxx xxxx xxxx xxxx */
+ /* SUB 1111 0x01 101x xxxx 0xxx xxxx xxxx xxxx */
+ /* RSB 1111 0x01 110x xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfa008000, 0xf0000000, PROBES_T32_LOGICAL,
+ REGS(NOSPPC, 0, NOSPPC, 0, 0)),
+
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_0x1x___0[] = {
+ /* Data-processing (plain binary immediate) */
+
+ /* ADDW Rd, PC, #imm 1111 0x10 0000 1111 0xxx xxxx xxxx xxxx */
+ DECODE_OR (0xfbff8000, 0xf20f0000),
+ /* SUBW Rd, PC, #imm 1111 0x10 1010 1111 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfbff8000, 0xf2af0000, PROBES_T32_ADDWSUBW_PC,
+ REGS(PC, 0, NOSPPC, 0, 0)),
+
+ /* ADDW SP, SP, #imm 1111 0x10 0000 1101 0xxx 1101 xxxx xxxx */
+ DECODE_OR (0xfbff8f00, 0xf20d0d00),
+ /* SUBW SP, SP, #imm 1111 0x10 1010 1101 0xxx 1101 xxxx xxxx */
+ DECODE_EMULATEX (0xfbff8f00, 0xf2ad0d00, PROBES_T32_ADDWSUBW,
+ REGS(SP, 0, SP, 0, 0)),
+
+ /* ADDW 1111 0x10 0000 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_OR (0xfbf08000, 0xf2000000),
+ /* SUBW 1111 0x10 1010 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfbf08000, 0xf2a00000, PROBES_T32_ADDWSUBW,
+ REGS(NOPCX, 0, NOSPPC, 0, 0)),
+
+ /* MOVW 1111 0x10 0100 xxxx 0xxx xxxx xxxx xxxx */
+ /* MOVT 1111 0x10 1100 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfb708000, 0xf2400000, PROBES_T32_MOVW,
+ REGS(0, 0, NOSPPC, 0, 0)),
+
+ /* SSAT16 1111 0x11 0010 xxxx 0000 xxxx 00xx xxxx */
+ /* SSAT 1111 0x11 00x0 xxxx 0xxx xxxx xxxx xxxx */
+ /* USAT16 1111 0x11 1010 xxxx 0000 xxxx 00xx xxxx */
+ /* USAT 1111 0x11 10x0 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfb508000, 0xf3000000, PROBES_T32_SAT,
+ REGS(NOSPPC, 0, NOSPPC, 0, 0)),
+
+ /* SFBX 1111 0x11 0100 xxxx 0xxx xxxx xxxx xxxx */
+ /* UFBX 1111 0x11 1100 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfb708000, 0xf3400000, PROBES_T32_BITFIELD,
+ REGS(NOSPPC, 0, NOSPPC, 0, 0)),
+
+ /* BFC 1111 0x11 0110 1111 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfbff8000, 0xf36f0000, PROBES_T32_BITFIELD,
+ REGS(0, 0, NOSPPC, 0, 0)),
+
+ /* BFI 1111 0x11 0110 xxxx 0xxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfbf08000, 0xf3600000, PROBES_T32_BITFIELD,
+ REGS(NOSPPCX, 0, NOSPPC, 0, 0)),
+
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_0xxx___1[] = {
+ /* Branches and miscellaneous control */
+
+ /* YIELD 1111 0011 1010 xxxx 10x0 x000 0000 0001 */
+ DECODE_OR (0xfff0d7ff, 0xf3a08001),
+ /* SEV 1111 0011 1010 xxxx 10x0 x000 0000 0100 */
+ DECODE_EMULATE (0xfff0d7ff, 0xf3a08004, PROBES_T32_SEV),
+ /* NOP 1111 0011 1010 xxxx 10x0 x000 0000 0000 */
+ /* WFE 1111 0011 1010 xxxx 10x0 x000 0000 0010 */
+ /* WFI 1111 0011 1010 xxxx 10x0 x000 0000 0011 */
+ DECODE_SIMULATE (0xfff0d7fc, 0xf3a08000, PROBES_T32_WFE),
+
+ /* MRS Rd, CPSR 1111 0011 1110 xxxx 10x0 xxxx xxxx xxxx */
+ DECODE_SIMULATEX(0xfff0d000, 0xf3e08000, PROBES_T32_MRS,
+ REGS(0, 0, NOSPPC, 0, 0)),
+
+ /*
+ * Unsupported instructions
+ * 1111 0x11 1xxx xxxx 10x0 xxxx xxxx xxxx
+ *
+ * MSR 1111 0011 100x xxxx 10x0 xxxx xxxx xxxx
+ * DBG hint 1111 0011 1010 xxxx 10x0 x000 1111 xxxx
+ * Unallocated hints 1111 0011 1010 xxxx 10x0 x000 xxxx xxxx
+ * CPS 1111 0011 1010 xxxx 10x0 xxxx xxxx xxxx
+ * CLREX/DSB/DMB/ISB 1111 0011 1011 xxxx 10x0 xxxx xxxx xxxx
+ * BXJ 1111 0011 1100 xxxx 10x0 xxxx xxxx xxxx
+ * SUBS PC,LR,#<imm8> 1111 0011 1101 xxxx 10x0 xxxx xxxx xxxx
+ * MRS Rd, SPSR 1111 0011 1111 xxxx 10x0 xxxx xxxx xxxx
+ * SMC 1111 0111 1111 xxxx 1000 xxxx xxxx xxxx
+ * UNDEFINED 1111 0111 1111 xxxx 1010 xxxx xxxx xxxx
+ * ??? 1111 0111 1xxx xxxx 1010 xxxx xxxx xxxx
+ */
+ DECODE_REJECT (0xfb80d000, 0xf3808000),
+
+ /* Bcc 1111 0xxx xxxx xxxx 10x0 xxxx xxxx xxxx */
+ DECODE_CUSTOM (0xf800d000, 0xf0008000, PROBES_T32_BRANCH_COND),
+
+ /* BLX 1111 0xxx xxxx xxxx 11x0 xxxx xxxx xxx0 */
+ DECODE_OR (0xf800d001, 0xf000c000),
+ /* B 1111 0xxx xxxx xxxx 10x1 xxxx xxxx xxxx */
+ /* BL 1111 0xxx xxxx xxxx 11x1 xxxx xxxx xxxx */
+ DECODE_SIMULATE (0xf8009000, 0xf0009000, PROBES_T32_BRANCH),
+
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_100x_x0x1__1111[] = {
+ /* Memory hints */
+
+ /* PLD (literal) 1111 1000 x001 1111 1111 xxxx xxxx xxxx */
+ /* PLI (literal) 1111 1001 x001 1111 1111 xxxx xxxx xxxx */
+ DECODE_SIMULATE (0xfe7ff000, 0xf81ff000, PROBES_T32_PLDI),
+
+ /* PLD{W} (immediate) 1111 1000 10x1 xxxx 1111 xxxx xxxx xxxx */
+ DECODE_OR (0xffd0f000, 0xf890f000),
+ /* PLD{W} (immediate) 1111 1000 00x1 xxxx 1111 1100 xxxx xxxx */
+ DECODE_OR (0xffd0ff00, 0xf810fc00),
+ /* PLI (immediate) 1111 1001 1001 xxxx 1111 xxxx xxxx xxxx */
+ DECODE_OR (0xfff0f000, 0xf990f000),
+ /* PLI (immediate) 1111 1001 0001 xxxx 1111 1100 xxxx xxxx */
+ DECODE_SIMULATEX(0xfff0ff00, 0xf910fc00, PROBES_T32_PLDI,
+ REGS(NOPCX, 0, 0, 0, 0)),
+
+ /* PLD{W} (register) 1111 1000 00x1 xxxx 1111 0000 00xx xxxx */
+ DECODE_OR (0xffd0ffc0, 0xf810f000),
+ /* PLI (register) 1111 1001 0001 xxxx 1111 0000 00xx xxxx */
+ DECODE_SIMULATEX(0xfff0ffc0, 0xf910f000, PROBES_T32_PLDI,
+ REGS(NOPCX, 0, 0, 0, NOSPPC)),
+
+ /* Other unallocated instructions... */
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_100x[] = {
+ /* Store/Load single data item */
+
+ /* ??? 1111 100x x11x xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfe600000, 0xf8600000),
+
+ /* ??? 1111 1001 0101 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xfff00000, 0xf9500000),
+
+ /* ??? 1111 100x 0xxx xxxx xxxx 10x0 xxxx xxxx */
+ DECODE_REJECT (0xfe800d00, 0xf8000800),
+
+ /* STRBT 1111 1000 0000 xxxx xxxx 1110 xxxx xxxx */
+ /* STRHT 1111 1000 0010 xxxx xxxx 1110 xxxx xxxx */
+ /* STRT 1111 1000 0100 xxxx xxxx 1110 xxxx xxxx */
+ /* LDRBT 1111 1000 0001 xxxx xxxx 1110 xxxx xxxx */
+ /* LDRSBT 1111 1001 0001 xxxx xxxx 1110 xxxx xxxx */
+ /* LDRHT 1111 1000 0011 xxxx xxxx 1110 xxxx xxxx */
+ /* LDRSHT 1111 1001 0011 xxxx xxxx 1110 xxxx xxxx */
+ /* LDRT 1111 1000 0101 xxxx xxxx 1110 xxxx xxxx */
+ DECODE_REJECT (0xfe800f00, 0xf8000e00),
+
+ /* STR{,B,H} Rn,[PC...] 1111 1000 xxx0 1111 xxxx xxxx xxxx xxxx */
+ DECODE_REJECT (0xff1f0000, 0xf80f0000),
+
+ /* STR{,B,H} PC,[Rn...] 1111 1000 xxx0 xxxx 1111 xxxx xxxx xxxx */
+ DECODE_REJECT (0xff10f000, 0xf800f000),
+
+ /* LDR (literal) 1111 1000 x101 1111 xxxx xxxx xxxx xxxx */
+ DECODE_SIMULATEX(0xff7f0000, 0xf85f0000, PROBES_T32_LDR_LIT,
+ REGS(PC, ANY, 0, 0, 0)),
+
+ /* STR (immediate) 1111 1000 0100 xxxx xxxx 1xxx xxxx xxxx */
+ /* LDR (immediate) 1111 1000 0101 xxxx xxxx 1xxx xxxx xxxx */
+ DECODE_OR (0xffe00800, 0xf8400800),
+ /* STR (immediate) 1111 1000 1100 xxxx xxxx xxxx xxxx xxxx */
+ /* LDR (immediate) 1111 1000 1101 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xffe00000, 0xf8c00000, PROBES_T32_LDRSTR,
+ REGS(NOPCX, ANY, 0, 0, 0)),
+
+ /* STR (register) 1111 1000 0100 xxxx xxxx 0000 00xx xxxx */
+ /* LDR (register) 1111 1000 0101 xxxx xxxx 0000 00xx xxxx */
+ DECODE_EMULATEX (0xffe00fc0, 0xf8400000, PROBES_T32_LDRSTR,
+ REGS(NOPCX, ANY, 0, 0, NOSPPC)),
+
+ /* LDRB (literal) 1111 1000 x001 1111 xxxx xxxx xxxx xxxx */
+ /* LDRSB (literal) 1111 1001 x001 1111 xxxx xxxx xxxx xxxx */
+ /* LDRH (literal) 1111 1000 x011 1111 xxxx xxxx xxxx xxxx */
+ /* LDRSH (literal) 1111 1001 x011 1111 xxxx xxxx xxxx xxxx */
+ DECODE_SIMULATEX(0xfe5f0000, 0xf81f0000, PROBES_T32_LDR_LIT,
+ REGS(PC, NOSPPCX, 0, 0, 0)),
+
+ /* STRB (immediate) 1111 1000 0000 xxxx xxxx 1xxx xxxx xxxx */
+ /* STRH (immediate) 1111 1000 0010 xxxx xxxx 1xxx xxxx xxxx */
+ /* LDRB (immediate) 1111 1000 0001 xxxx xxxx 1xxx xxxx xxxx */
+ /* LDRSB (immediate) 1111 1001 0001 xxxx xxxx 1xxx xxxx xxxx */
+ /* LDRH (immediate) 1111 1000 0011 xxxx xxxx 1xxx xxxx xxxx */
+ /* LDRSH (immediate) 1111 1001 0011 xxxx xxxx 1xxx xxxx xxxx */
+ DECODE_OR (0xfec00800, 0xf8000800),
+ /* STRB (immediate) 1111 1000 1000 xxxx xxxx xxxx xxxx xxxx */
+ /* STRH (immediate) 1111 1000 1010 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRB (immediate) 1111 1000 1001 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRSB (immediate) 1111 1001 1001 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRH (immediate) 1111 1000 1011 xxxx xxxx xxxx xxxx xxxx */
+ /* LDRSH (immediate) 1111 1001 1011 xxxx xxxx xxxx xxxx xxxx */
+ DECODE_EMULATEX (0xfec00000, 0xf8800000, PROBES_T32_LDRSTR,
+ REGS(NOPCX, NOSPPCX, 0, 0, 0)),
+
+ /* STRB (register) 1111 1000 0000 xxxx xxxx 0000 00xx xxxx */
+ /* STRH (register) 1111 1000 0010 xxxx xxxx 0000 00xx xxxx */
+ /* LDRB (register) 1111 1000 0001 xxxx xxxx 0000 00xx xxxx */
+ /* LDRSB (register) 1111 1001 0001 xxxx xxxx 0000 00xx xxxx */
+ /* LDRH (register) 1111 1000 0011 xxxx xxxx 0000 00xx xxxx */
+ /* LDRSH (register) 1111 1001 0011 xxxx xxxx 0000 00xx xxxx */
+ DECODE_EMULATEX (0xfe800fc0, 0xf8000000, PROBES_T32_LDRSTR,
+ REGS(NOPCX, NOSPPCX, 0, 0, NOSPPC)),
+
+ /* Other unallocated instructions... */
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_1010___1111[] = {
+ /* Data-processing (register) */
+
+ /* ??? 1111 1010 011x xxxx 1111 xxxx 1xxx xxxx */
+ DECODE_REJECT (0xffe0f080, 0xfa60f080),
+
+ /* SXTH 1111 1010 0000 1111 1111 xxxx 1xxx xxxx */
+ /* UXTH 1111 1010 0001 1111 1111 xxxx 1xxx xxxx */
+ /* SXTB16 1111 1010 0010 1111 1111 xxxx 1xxx xxxx */
+ /* UXTB16 1111 1010 0011 1111 1111 xxxx 1xxx xxxx */
+ /* SXTB 1111 1010 0100 1111 1111 xxxx 1xxx xxxx */
+ /* UXTB 1111 1010 0101 1111 1111 xxxx 1xxx xxxx */
+ DECODE_EMULATEX (0xff8ff080, 0xfa0ff080, PROBES_T32_SIGN_EXTEND,
+ REGS(0, 0, NOSPPC, 0, NOSPPC)),
+
+
+ /* ??? 1111 1010 1xxx xxxx 1111 xxxx 0x11 xxxx */
+ DECODE_REJECT (0xff80f0b0, 0xfa80f030),
+ /* ??? 1111 1010 1x11 xxxx 1111 xxxx 0xxx xxxx */
+ DECODE_REJECT (0xffb0f080, 0xfab0f000),
+
+ /* SADD16 1111 1010 1001 xxxx 1111 xxxx 0000 xxxx */
+ /* SASX 1111 1010 1010 xxxx 1111 xxxx 0000 xxxx */
+ /* SSAX 1111 1010 1110 xxxx 1111 xxxx 0000 xxxx */
+ /* SSUB16 1111 1010 1101 xxxx 1111 xxxx 0000 xxxx */
+ /* SADD8 1111 1010 1000 xxxx 1111 xxxx 0000 xxxx */
+ /* SSUB8 1111 1010 1100 xxxx 1111 xxxx 0000 xxxx */
+
+ /* QADD16 1111 1010 1001 xxxx 1111 xxxx 0001 xxxx */
+ /* QASX 1111 1010 1010 xxxx 1111 xxxx 0001 xxxx */
+ /* QSAX 1111 1010 1110 xxxx 1111 xxxx 0001 xxxx */
+ /* QSUB16 1111 1010 1101 xxxx 1111 xxxx 0001 xxxx */
+ /* QADD8 1111 1010 1000 xxxx 1111 xxxx 0001 xxxx */
+ /* QSUB8 1111 1010 1100 xxxx 1111 xxxx 0001 xxxx */
+
+ /* SHADD16 1111 1010 1001 xxxx 1111 xxxx 0010 xxxx */
+ /* SHASX 1111 1010 1010 xxxx 1111 xxxx 0010 xxxx */
+ /* SHSAX 1111 1010 1110 xxxx 1111 xxxx 0010 xxxx */
+ /* SHSUB16 1111 1010 1101 xxxx 1111 xxxx 0010 xxxx */
+ /* SHADD8 1111 1010 1000 xxxx 1111 xxxx 0010 xxxx */
+ /* SHSUB8 1111 1010 1100 xxxx 1111 xxxx 0010 xxxx */
+
+ /* UADD16 1111 1010 1001 xxxx 1111 xxxx 0100 xxxx */
+ /* UASX 1111 1010 1010 xxxx 1111 xxxx 0100 xxxx */
+ /* USAX 1111 1010 1110 xxxx 1111 xxxx 0100 xxxx */
+ /* USUB16 1111 1010 1101 xxxx 1111 xxxx 0100 xxxx */
+ /* UADD8 1111 1010 1000 xxxx 1111 xxxx 0100 xxxx */
+ /* USUB8 1111 1010 1100 xxxx 1111 xxxx 0100 xxxx */
+
+ /* UQADD16 1111 1010 1001 xxxx 1111 xxxx 0101 xxxx */
+ /* UQASX 1111 1010 1010 xxxx 1111 xxxx 0101 xxxx */
+ /* UQSAX 1111 1010 1110 xxxx 1111 xxxx 0101 xxxx */
+ /* UQSUB16 1111 1010 1101 xxxx 1111 xxxx 0101 xxxx */
+ /* UQADD8 1111 1010 1000 xxxx 1111 xxxx 0101 xxxx */
+ /* UQSUB8 1111 1010 1100 xxxx 1111 xxxx 0101 xxxx */
+
+ /* UHADD16 1111 1010 1001 xxxx 1111 xxxx 0110 xxxx */
+ /* UHASX 1111 1010 1010 xxxx 1111 xxxx 0110 xxxx */
+ /* UHSAX 1111 1010 1110 xxxx 1111 xxxx 0110 xxxx */
+ /* UHSUB16 1111 1010 1101 xxxx 1111 xxxx 0110 xxxx */
+ /* UHADD8 1111 1010 1000 xxxx 1111 xxxx 0110 xxxx */
+ /* UHSUB8 1111 1010 1100 xxxx 1111 xxxx 0110 xxxx */
+ DECODE_OR (0xff80f080, 0xfa80f000),
+
+ /* SXTAH 1111 1010 0000 xxxx 1111 xxxx 1xxx xxxx */
+ /* UXTAH 1111 1010 0001 xxxx 1111 xxxx 1xxx xxxx */
+ /* SXTAB16 1111 1010 0010 xxxx 1111 xxxx 1xxx xxxx */
+ /* UXTAB16 1111 1010 0011 xxxx 1111 xxxx 1xxx xxxx */
+ /* SXTAB 1111 1010 0100 xxxx 1111 xxxx 1xxx xxxx */
+ /* UXTAB 1111 1010 0101 xxxx 1111 xxxx 1xxx xxxx */
+ DECODE_OR (0xff80f080, 0xfa00f080),
+
+ /* QADD 1111 1010 1000 xxxx 1111 xxxx 1000 xxxx */
+ /* QDADD 1111 1010 1000 xxxx 1111 xxxx 1001 xxxx */
+ /* QSUB 1111 1010 1000 xxxx 1111 xxxx 1010 xxxx */
+ /* QDSUB 1111 1010 1000 xxxx 1111 xxxx 1011 xxxx */
+ DECODE_OR (0xfff0f0c0, 0xfa80f080),
+
+ /* SEL 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */
+ DECODE_OR (0xfff0f0f0, 0xfaa0f080),
+
+ /* LSL 1111 1010 000x xxxx 1111 xxxx 0000 xxxx */
+ /* LSR 1111 1010 001x xxxx 1111 xxxx 0000 xxxx */
+ /* ASR 1111 1010 010x xxxx 1111 xxxx 0000 xxxx */
+ /* ROR 1111 1010 011x xxxx 1111 xxxx 0000 xxxx */
+ DECODE_EMULATEX (0xff80f0f0, 0xfa00f000, PROBES_T32_MEDIA,
+ REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
+
+ /* CLZ 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */
+ DECODE_OR (0xfff0f0f0, 0xfab0f080),
+
+ /* REV 1111 1010 1001 xxxx 1111 xxxx 1000 xxxx */
+ /* REV16 1111 1010 1001 xxxx 1111 xxxx 1001 xxxx */
+ /* RBIT 1111 1010 1001 xxxx 1111 xxxx 1010 xxxx */
+ /* REVSH 1111 1010 1001 xxxx 1111 xxxx 1011 xxxx */
+ DECODE_EMULATEX (0xfff0f0c0, 0xfa90f080, PROBES_T32_REVERSE,
+ REGS(NOSPPC, 0, NOSPPC, 0, SAMEAS16)),
+
+ /* Other unallocated instructions... */
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_1011_0[] = {
+ /* Multiply, multiply accumulate, and absolute difference */
+
+ /* ??? 1111 1011 0000 xxxx 1111 xxxx 0001 xxxx */
+ DECODE_REJECT (0xfff0f0f0, 0xfb00f010),
+ /* ??? 1111 1011 0111 xxxx 1111 xxxx 0001 xxxx */
+ DECODE_REJECT (0xfff0f0f0, 0xfb70f010),
+
+ /* SMULxy 1111 1011 0001 xxxx 1111 xxxx 00xx xxxx */
+ DECODE_OR (0xfff0f0c0, 0xfb10f000),
+ /* MUL 1111 1011 0000 xxxx 1111 xxxx 0000 xxxx */
+ /* SMUAD{X} 1111 1011 0010 xxxx 1111 xxxx 000x xxxx */
+ /* SMULWy 1111 1011 0011 xxxx 1111 xxxx 000x xxxx */
+ /* SMUSD{X} 1111 1011 0100 xxxx 1111 xxxx 000x xxxx */
+ /* SMMUL{R} 1111 1011 0101 xxxx 1111 xxxx 000x xxxx */
+ /* USAD8 1111 1011 0111 xxxx 1111 xxxx 0000 xxxx */
+ DECODE_EMULATEX (0xff80f0e0, 0xfb00f000, PROBES_T32_MUL_ADD,
+ REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)),
+
+ /* ??? 1111 1011 0111 xxxx xxxx xxxx 0001 xxxx */
+ DECODE_REJECT (0xfff000f0, 0xfb700010),
+
+ /* SMLAxy 1111 1011 0001 xxxx xxxx xxxx 00xx xxxx */
+ DECODE_OR (0xfff000c0, 0xfb100000),
+ /* MLA 1111 1011 0000 xxxx xxxx xxxx 0000 xxxx */
+ /* MLS 1111 1011 0000 xxxx xxxx xxxx 0001 xxxx */
+ /* SMLAD{X} 1111 1011 0010 xxxx xxxx xxxx 000x xxxx */
+ /* SMLAWy 1111 1011 0011 xxxx xxxx xxxx 000x xxxx */
+ /* SMLSD{X} 1111 1011 0100 xxxx xxxx xxxx 000x xxxx */
+ /* SMMLA{R} 1111 1011 0101 xxxx xxxx xxxx 000x xxxx */
+ /* SMMLS{R} 1111 1011 0110 xxxx xxxx xxxx 000x xxxx */
+ /* USADA8 1111 1011 0111 xxxx xxxx xxxx 0000 xxxx */
+ DECODE_EMULATEX (0xff8000c0, 0xfb000000, PROBES_T32_MUL_ADD2,
+ REGS(NOSPPC, NOSPPCX, NOSPPC, 0, NOSPPC)),
+
+ /* Other unallocated instructions... */
+ DECODE_END
+};
+
+static const union decode_item t32_table_1111_1011_1[] = {
+ /* Long multiply, long multiply accumulate, and divide */
+
+ /* UMAAL 1111 1011 1110 xxxx xxxx xxxx 0110 xxxx */
+ DECODE_OR (0xfff000f0, 0xfbe00060),
+ /* SMLALxy 1111 1011 1100 xxxx xxxx xxxx 10xx xxxx */
+ DECODE_OR (0xfff000c0, 0xfbc00080),
+ /* SMLALD{X} 1111 1011 1100 xxxx xxxx xxxx 110x xxxx */
+ /* SMLSLD{X} 1111 1011 1101 xxxx xxxx xxxx 110x xxxx */
+ DECODE_OR (0xffe000e0, 0xfbc000c0),
+ /* SMULL 1111 1011 1000 xxxx xxxx xxxx 0000 xxxx */
+ /* UMULL 1111 1011 1010 xxxx xxxx xxxx 0000 xxxx */
+ /* SMLAL 1111 1011 1100 xxxx xxxx xxxx 0000 xxxx */
+ /* UMLAL 1111 1011 1110 xxxx xxxx xxxx 0000 xxxx */
+ DECODE_EMULATEX (0xff9000f0, 0xfb800000, PROBES_T32_MUL_ADD_LONG,
+ REGS(NOSPPC, NOSPPC, NOSPPC, 0, NOSPPC)),
+
+ /* SDIV 1111 1011 1001 xxxx xxxx xxxx 1111 xxxx */
+ /* UDIV 1111 1011 1011 xxxx xxxx xxxx 1111 xxxx */
+ /* Other unallocated instructions... */
+ DECODE_END
+};
+
+const union decode_item kprobe_decode_thumb32_table[] = {
+
+ /*
+ * Load/store multiple instructions
+ * 1110 100x x0xx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfe400000, 0xe8000000, t32_table_1110_100x_x0xx),
+
+ /*
+ * Load/store dual, load/store exclusive, table branch
+ * 1110 100x x1xx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfe400000, 0xe8400000, t32_table_1110_100x_x1xx),
+
+ /*
+ * Data-processing (shifted register)
+ * 1110 101x xxxx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfe000000, 0xea000000, t32_table_1110_101x),
+
+ /*
+ * Coprocessor instructions
+ * 1110 11xx xxxx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_REJECT (0xfc000000, 0xec000000),
+
+ /*
+ * Data-processing (modified immediate)
+ * 1111 0x0x xxxx xxxx 0xxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfa008000, 0xf0000000, t32_table_1111_0x0x___0),
+
+ /*
+ * Data-processing (plain binary immediate)
+ * 1111 0x1x xxxx xxxx 0xxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfa008000, 0xf2000000, t32_table_1111_0x1x___0),
+
+ /*
+ * Branches and miscellaneous control
+ * 1111 0xxx xxxx xxxx 1xxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xf8008000, 0xf0008000, t32_table_1111_0xxx___1),
+
+ /*
+ * Advanced SIMD element or structure load/store instructions
+ * 1111 1001 xxx0 xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_REJECT (0xff100000, 0xf9000000),
+
+ /*
+ * Memory hints
+ * 1111 100x x0x1 xxxx 1111 xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfe50f000, 0xf810f000, t32_table_1111_100x_x0x1__1111),
+
+ /*
+ * Store single data item
+ * 1111 1000 xxx0 xxxx xxxx xxxx xxxx xxxx
+ * Load single data items
+ * 1111 100x xxx1 xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xfe000000, 0xf8000000, t32_table_1111_100x),
+
+ /*
+ * Data-processing (register)
+ * 1111 1010 xxxx xxxx 1111 xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xff00f000, 0xfa00f000, t32_table_1111_1010___1111),
+
+ /*
+ * Multiply, multiply accumulate, and absolute difference
+ * 1111 1011 0xxx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xff800000, 0xfb000000, t32_table_1111_1011_0),
+
+ /*
+ * Long multiply, long multiply accumulate, and divide
+ * 1111 1011 1xxx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xff800000, 0xfb800000, t32_table_1111_1011_1),
+
+ /*
+ * Coprocessor instructions
+ * 1111 11xx xxxx xxxx xxxx xxxx xxxx xxxx
+ */
+ DECODE_END
+};
+#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
+EXPORT_SYMBOL_GPL(kprobe_decode_thumb32_table);
+#endif
+static const union decode_item t16_table_1011[] = {
+ /* Miscellaneous 16-bit instructions */
+
+ /* ADD (SP plus immediate) 1011 0000 0xxx xxxx */
+ /* SUB (SP minus immediate) 1011 0000 1xxx xxxx */
+ DECODE_SIMULATE (0xff00, 0xb000, PROBES_T16_ADD_SP),
+
+ /* CBZ 1011 00x1 xxxx xxxx */
+ /* CBNZ 1011 10x1 xxxx xxxx */
+ DECODE_SIMULATE (0xf500, 0xb100, PROBES_T16_CBZ),
+
+ /* SXTH 1011 0010 00xx xxxx */
+ /* SXTB 1011 0010 01xx xxxx */
+ /* UXTH 1011 0010 10xx xxxx */
+ /* UXTB 1011 0010 11xx xxxx */
+ /* REV 1011 1010 00xx xxxx */
+ /* REV16 1011 1010 01xx xxxx */
+ /* ??? 1011 1010 10xx xxxx */
+ /* REVSH 1011 1010 11xx xxxx */
+ DECODE_REJECT (0xffc0, 0xba80),
+ DECODE_EMULATE (0xf500, 0xb000, PROBES_T16_SIGN_EXTEND),
+
+ /* PUSH 1011 010x xxxx xxxx */
+ DECODE_CUSTOM (0xfe00, 0xb400, PROBES_T16_PUSH),
+ /* POP 1011 110x xxxx xxxx */
+ DECODE_CUSTOM (0xfe00, 0xbc00, PROBES_T16_POP),
+
+ /*
+ * If-Then, and hints
+ * 1011 1111 xxxx xxxx
+ */
+
+ /* YIELD 1011 1111 0001 0000 */
+ DECODE_OR (0xffff, 0xbf10),
+ /* SEV 1011 1111 0100 0000 */
+ DECODE_EMULATE (0xffff, 0xbf40, PROBES_T16_SEV),
+ /* NOP 1011 1111 0000 0000 */
+ /* WFE 1011 1111 0010 0000 */
+ /* WFI 1011 1111 0011 0000 */
+ DECODE_SIMULATE (0xffcf, 0xbf00, PROBES_T16_WFE),
+ /* Unassigned hints 1011 1111 xxxx 0000 */
+ DECODE_REJECT (0xff0f, 0xbf00),
+ /* IT 1011 1111 xxxx xxxx */
+ DECODE_CUSTOM (0xff00, 0xbf00, PROBES_T16_IT),
+
+ /* SETEND 1011 0110 010x xxxx */
+ /* CPS 1011 0110 011x xxxx */
+ /* BKPT 1011 1110 xxxx xxxx */
+ /* And unallocated instructions... */
+ DECODE_END
+};
+
+const union decode_item kprobe_decode_thumb16_table[] = {
+
+ /*
+ * Shift (immediate), add, subtract, move, and compare
+ * 00xx xxxx xxxx xxxx
+ */
+
+ /* CMP (immediate) 0010 1xxx xxxx xxxx */
+ DECODE_EMULATE (0xf800, 0x2800, PROBES_T16_CMP),
+
+ /* ADD (register) 0001 100x xxxx xxxx */
+ /* SUB (register) 0001 101x xxxx xxxx */
+ /* LSL (immediate) 0000 0xxx xxxx xxxx */
+ /* LSR (immediate) 0000 1xxx xxxx xxxx */
+ /* ASR (immediate) 0001 0xxx xxxx xxxx */
+ /* ADD (immediate, Thumb) 0001 110x xxxx xxxx */
+ /* SUB (immediate, Thumb) 0001 111x xxxx xxxx */
+ /* MOV (immediate) 0010 0xxx xxxx xxxx */
+ /* ADD (immediate, Thumb) 0011 0xxx xxxx xxxx */
+ /* SUB (immediate, Thumb) 0011 1xxx xxxx xxxx */
+ DECODE_EMULATE (0xc000, 0x0000, PROBES_T16_ADDSUB),
+
+ /*
+ * 16-bit Thumb data-processing instructions
+ * 0100 00xx xxxx xxxx
+ */
+
+ /* TST (register) 0100 0010 00xx xxxx */
+ DECODE_EMULATE (0xffc0, 0x4200, PROBES_T16_CMP),
+ /* CMP (register) 0100 0010 10xx xxxx */
+ /* CMN (register) 0100 0010 11xx xxxx */
+ DECODE_EMULATE (0xff80, 0x4280, PROBES_T16_CMP),
+ /* AND (register) 0100 0000 00xx xxxx */
+ /* EOR (register) 0100 0000 01xx xxxx */
+ /* LSL (register) 0100 0000 10xx xxxx */
+ /* LSR (register) 0100 0000 11xx xxxx */
+ /* ASR (register) 0100 0001 00xx xxxx */
+ /* ADC (register) 0100 0001 01xx xxxx */
+ /* SBC (register) 0100 0001 10xx xxxx */
+ /* ROR (register) 0100 0001 11xx xxxx */
+ /* RSB (immediate) 0100 0010 01xx xxxx */
+ /* ORR (register) 0100 0011 00xx xxxx */
+ /* MUL 0100 0011 00xx xxxx */
+ /* BIC (register) 0100 0011 10xx xxxx */
+ /* MVN (register) 0100 0011 10xx xxxx */
+ DECODE_EMULATE (0xfc00, 0x4000, PROBES_T16_LOGICAL),
+
+ /*
+ * Special data instructions and branch and exchange
+ * 0100 01xx xxxx xxxx
+ */
+
+ /* BLX pc 0100 0111 1111 1xxx */
+ DECODE_REJECT (0xfff8, 0x47f8),
+
+ /* BX (register) 0100 0111 0xxx xxxx */
+ /* BLX (register) 0100 0111 1xxx xxxx */
+ DECODE_SIMULATE (0xff00, 0x4700, PROBES_T16_BLX),
+
+ /* ADD pc, pc 0100 0100 1111 1111 */
+ DECODE_REJECT (0xffff, 0x44ff),
+
+ /* ADD (register) 0100 0100 xxxx xxxx */
+ /* CMP (register) 0100 0101 xxxx xxxx */
+ /* MOV (register) 0100 0110 xxxx xxxx */
+ DECODE_CUSTOM (0xfc00, 0x4400, PROBES_T16_HIREGOPS),
+
+ /*
+ * Load from Literal Pool
+ * LDR (literal) 0100 1xxx xxxx xxxx
+ */
+ DECODE_SIMULATE (0xf800, 0x4800, PROBES_T16_LDR_LIT),
+
+ /*
+ * 16-bit Thumb Load/store instructions
+ * 0101 xxxx xxxx xxxx
+ * 011x xxxx xxxx xxxx
+ * 100x xxxx xxxx xxxx
+ */
+
+ /* STR (register) 0101 000x xxxx xxxx */
+ /* STRH (register) 0101 001x xxxx xxxx */
+ /* STRB (register) 0101 010x xxxx xxxx */
+ /* LDRSB (register) 0101 011x xxxx xxxx */
+ /* LDR (register) 0101 100x xxxx xxxx */
+ /* LDRH (register) 0101 101x xxxx xxxx */
+ /* LDRB (register) 0101 110x xxxx xxxx */
+ /* LDRSH (register) 0101 111x xxxx xxxx */
+ /* STR (immediate, Thumb) 0110 0xxx xxxx xxxx */
+ /* LDR (immediate, Thumb) 0110 1xxx xxxx xxxx */
+ /* STRB (immediate, Thumb) 0111 0xxx xxxx xxxx */
+ /* LDRB (immediate, Thumb) 0111 1xxx xxxx xxxx */
+ DECODE_EMULATE (0xc000, 0x4000, PROBES_T16_LDRHSTRH),
+ /* STRH (immediate, Thumb) 1000 0xxx xxxx xxxx */
+ /* LDRH (immediate, Thumb) 1000 1xxx xxxx xxxx */
+ DECODE_EMULATE (0xf000, 0x8000, PROBES_T16_LDRHSTRH),
+ /* STR (immediate, Thumb) 1001 0xxx xxxx xxxx */
+ /* LDR (immediate, Thumb) 1001 1xxx xxxx xxxx */
+ DECODE_SIMULATE (0xf000, 0x9000, PROBES_T16_LDRSTR),
+
+ /*
+ * Generate PC-/SP-relative address
+ * ADR (literal) 1010 0xxx xxxx xxxx
+ * ADD (SP plus immediate) 1010 1xxx xxxx xxxx
+ */
+ DECODE_SIMULATE (0xf000, 0xa000, PROBES_T16_ADR),
+
+ /*
+ * Miscellaneous 16-bit instructions
+ * 1011 xxxx xxxx xxxx
+ */
+ DECODE_TABLE (0xf000, 0xb000, t16_table_1011),
+
+ /* STM 1100 0xxx xxxx xxxx */
+ /* LDM 1100 1xxx xxxx xxxx */
+ DECODE_EMULATE (0xf000, 0xc000, PROBES_T16_LDMSTM),
+
+ /*
+ * Conditional branch, and Supervisor Call
+ */
+
+ /* Permanently UNDEFINED 1101 1110 xxxx xxxx */
+ /* SVC 1101 1111 xxxx xxxx */
+ DECODE_REJECT (0xfe00, 0xde00),
+
+ /* Conditional branch 1101 xxxx xxxx xxxx */
+ DECODE_CUSTOM (0xf000, 0xd000, PROBES_T16_BRANCH_COND),
+
+ /*
+ * Unconditional branch
+ * B 1110 0xxx xxxx xxxx
+ */
+ DECODE_SIMULATE (0xf800, 0xe000, PROBES_T16_BRANCH),
+
+ DECODE_END
+};
+
+static unsigned long __kprobes thumb_check_cc(unsigned long cpsr)
+{
+ if (unlikely(in_it_block(cpsr)))
+ return kprobe_condition_checks[current_cond(cpsr)](cpsr);
+ return true;
+}
+
+static void __kprobes thumb16_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
+ regs->ARM_pc += 2;
+ p->ainsn.insn_handler(p, regs);
+ regs->ARM_cpsr = it_advance(regs->ARM_cpsr);
+}
+
+static void __kprobes thumb32_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
+ regs->ARM_pc += 4;
+ p->ainsn.insn_handler(p, regs);
+ regs->ARM_cpsr = it_advance(regs->ARM_cpsr);
+}
+
+enum kprobe_insn __kprobes
+thumb16_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *actions)
+{
+ asi->insn_singlestep = thumb16_singlestep;
+ asi->insn_check_cc = thumb_check_cc;
+ return kprobe_decode_insn(insn, asi, kprobe_decode_thumb16_table, true,
+ (const union decode_item *) actions);
+}
+
+enum kprobe_insn __kprobes
+thumb32_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *actions)
+{
+ asi->insn_singlestep = thumb32_singlestep;
+ asi->insn_check_cc = thumb_check_cc;
+ return kprobe_decode_insn(insn, asi, kprobe_decode_thumb32_table, true,
+ (const union decode_item *) actions);
+}
diff --git a/arch/arm/kernel/probes-thumb.h b/arch/arm/kernel/probes-thumb.h
new file mode 100644
index 0000000..d424dd638
--- /dev/null
+++ b/arch/arm/kernel/probes-thumb.h
@@ -0,0 +1,136 @@
+/*
+ * arch/arm/kernel/probes-arm.h
+ *
+ * Copyright 2013 Linaro Ltd.
+ * Written by: David A. Long
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef _ARM_KERNEL_PROBES_THUMB_H
+#define _ARM_KERNEL_PROBES_THUMB_H
+
+/*
+ * True if current instruction is in an IT block.
+ */
+#define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000)
+
+/*
+ * Return the condition code to check for the currently executing instruction.
+ * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
+ * in_it_block returns true.
+ */
+#define current_cond(cpsr) ((cpsr >> 12) & 0xf)
+
+enum probes_t32_action {
+ PROBES_T32_EMULATE_NONE,
+ PROBES_T32_SIMULATE_NOP,
+ PROBES_T32_LDMSTM,
+ PROBES_T32_LDRDSTRD,
+ PROBES_T32_TABLE_BRANCH,
+ PROBES_T32_TST,
+ PROBES_T32_CMP,
+ PROBES_T32_MOV,
+ PROBES_T32_ADDSUB,
+ PROBES_T32_LOGICAL,
+ PROBES_T32_ADDWSUBW_PC,
+ PROBES_T32_ADDWSUBW,
+ PROBES_T32_MOVW,
+ PROBES_T32_SAT,
+ PROBES_T32_BITFIELD,
+ PROBES_T32_SEV,
+ PROBES_T32_WFE,
+ PROBES_T32_MRS,
+ PROBES_T32_BRANCH_COND,
+ PROBES_T32_BRANCH,
+ PROBES_T32_PLDI,
+ PROBES_T32_LDR_LIT,
+ PROBES_T32_LDRSTR,
+ PROBES_T32_SIGN_EXTEND,
+ PROBES_T32_MEDIA,
+ PROBES_T32_REVERSE,
+ PROBES_T32_MUL_ADD,
+ PROBES_T32_MUL_ADD2,
+ PROBES_T32_MUL_ADD_LONG
+};
+
+enum probes_t16_action {
+ PROBES_T16_ADD_SP,
+ PROBES_T16_CBZ,
+ PROBES_T16_SIGN_EXTEND,
+ PROBES_T16_PUSH,
+ PROBES_T16_POP,
+ PROBES_T16_SEV,
+ PROBES_T16_WFE,
+ PROBES_T16_IT,
+ PROBES_T16_CMP,
+ PROBES_T16_ADDSUB,
+ PROBES_T16_LOGICAL,
+ PROBES_T16_BLX,
+ PROBES_T16_HIREGOPS,
+ PROBES_T16_LDR_LIT,
+ PROBES_T16_LDRHSTRH,
+ PROBES_T16_LDRSTR,
+ PROBES_T16_ADR,
+ PROBES_T16_LDMSTM,
+ PROBES_T16_BRANCH_COND,
+ PROBES_T16_BRANCH
+};
+
+void __kprobes t16_simulate_bxblx(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_simulate_ldrstr_sp_relative(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t16_simulate_reladr(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_simulate_add_sp_imm(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_simulate_cbz(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_simulate_it(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_singlestep_it(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t16_decode_it(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t16_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t16_decode_cond_branch(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t16_simulate_branch(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_emulate_loregs_rwflags(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t16_emulate_loregs_noitrwflags(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t16_emulate_hiregs(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t16_decode_hiregs(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t16_emulate_push(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t16_decode_push(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t16_emulate_pop_nopc(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t16_emulate_pop_pc(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t16_decode_pop(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const struct decode_header *d);
+
+void __kprobes t32_simulate_table_branch(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t32_simulate_mrs(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t32_simulate_cond_branch(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t32_decode_cond_branch(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t32_simulate_branch(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t32_simulate_ldr_literal(struct kprobe *p, struct pt_regs *regs);
+enum kprobe_insn __kprobes t32_decode_ldmstm(kprobe_opcode_t insn,
+ struct arch_specific_insn *asi, const const struct decode_header *d);
+void __kprobes t32_emulate_ldrdstrd(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t32_emulate_ldrstr(struct kprobe *p, struct pt_regs *regs);
+void __kprobes t32_emulate_rd8rn16rm0_rwflags(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t32_emulate_rd8pc16_noflags(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t32_emulate_rd8rn16_noflags(struct kprobe *p,
+ struct pt_regs *regs);
+void __kprobes t32_emulate_rdlo12rdhi8rn16rm0_noflags(struct kprobe *p,
+ struct pt_regs *regs);
+
+#endif
diff --git a/arch/arm/kernel/probes.c b/arch/arm/kernel/probes.c
index 9b30486..cdfb3c5 100644
--- a/arch/arm/kernel/probes.c
+++ b/arch/arm/kernel/probes.c
@@ -379,7 +379,8 @@ static const int decode_struct_sizes[NUM_DECODE_TYPES] = {
*/
int __kprobes
kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
- const union decode_item *table, bool thumb)
+ const union decode_item *table, bool thumb,
+ const union decode_item *actions)
{
const struct decode_header *h = (struct decode_header *)table;
const struct decode_header *next;
@@ -413,18 +414,18 @@ kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
case DECODE_TYPE_CUSTOM: {
struct decode_custom *d = (struct decode_custom *)h;
- return (*d->decoder.decoder)(insn, asi);
+ return actions[d->decoder.bits].decoder(insn, asi, h);
}
case DECODE_TYPE_SIMULATE: {
struct decode_simulate *d = (struct decode_simulate *)h;
- asi->insn_handler = d->handler.handler;
+ asi->insn_handler = actions[d->handler.bits].handler;
return INSN_GOOD_NO_SLOT;
}
case DECODE_TYPE_EMULATE: {
struct decode_emulate *d = (struct decode_emulate *)h;
- asi->insn_handler = d->handler.handler;
+ asi->insn_handler = actions[d->handler.bits].handler;
set_emulated_insn(insn, asi, thumb);
return INSN_GOOD;
}
diff --git a/arch/arm/kernel/probes.h b/arch/arm/kernel/probes.h
index d14d224..ad87d68 100644
--- a/arch/arm/kernel/probes.h
+++ b/arch/arm/kernel/probes.h
@@ -131,7 +131,8 @@ void __kprobes kprobe_simulate_nop(struct kprobe *p, struct pt_regs *regs);
void __kprobes kprobe_emulate_none(struct kprobe *p, struct pt_regs *regs);
enum kprobe_insn __kprobes
-kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi);
+kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ const struct decode_header *h);
/*
* Test if load/store instructions writeback the address register.
@@ -334,7 +335,7 @@ struct decode_custom {
#define DECODE_CUSTOM(_mask, _value, _decoder) \
DECODE_HEADER(DECODE_TYPE_CUSTOM, _mask, _value, 0), \
- {.decoder = (_decoder)}
+ {.bits = (_decoder)}
struct decode_simulate {
@@ -344,7 +345,7 @@ struct decode_simulate {
#define DECODE_SIMULATEX(_mask, _value, _handler, _regs) \
DECODE_HEADER(DECODE_TYPE_SIMULATE, _mask, _value, _regs), \
- {.handler = (_handler)}
+ {.bits = (_handler)}
#define DECODE_SIMULATE(_mask, _value, _handler) \
DECODE_SIMULATEX(_mask, _value, _handler, 0)
@@ -357,7 +358,7 @@ struct decode_emulate {
#define DECODE_EMULATEX(_mask, _value, _handler, _regs) \
DECODE_HEADER(DECODE_TYPE_EMULATE, _mask, _value, _regs), \
- {.handler = (_handler)}
+ {.bits = (_handler)}
#define DECODE_EMULATE(_mask, _value, _handler) \
DECODE_EMULATEX(_mask, _value, _handler, 0)
@@ -382,14 +383,18 @@ struct decode_reject {
#ifdef CONFIG_THUMB2_KERNEL
extern const union decode_item kprobe_decode_thumb16_table[];
extern const union decode_item kprobe_decode_thumb32_table[];
+extern const union decode_item kprobes_t32_actions[];
+extern const union decode_item kprobes_t16_actions[];
#else
extern const union decode_item kprobe_decode_arm_table[];
+extern const union decode_item kprobes_arm_actions[];
#endif
extern kprobe_check_cc * const kprobe_condition_checks[16];
int kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi,
- const union decode_item *table, bool thumb16);
+ const union decode_item *table, bool thumb16,
+ const union decode_item *actions);
#endif
--
1.8.1.2
--
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