| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20240701043430.66666-4-atrajeev@linux.vnet.ibm.com>
Date: Mon, 1 Jul 2024 10:04:16 +0530
From: Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
To: acme@...nel.org, jolsa@...nel.org, adrian.hunter@...el.com,
irogers@...gle.com, namhyung@...nel.org, segher@...nel.crashing.org,
christophe.leroy@...roup.eu
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, akanksha@...ux.ibm.com,
maddy@...ux.ibm.com, atrajeev@...ux.vnet.ibm.com, kjain@...ux.ibm.com,
disgoel@...ux.vnet.ibm.com
Subject: [PATCH V5 03/17] tools/perf: Update TYPE_STATE_MAX_REGS to include max of regs in powerpc
Add TYPE_STATE_MAX_REGS_X86 and TYPE_STATE_MAX_REGS_PPC. Define
TYPE_STATE_MAX_REGS to be 32 which is max size of the array. While
checking if reg is valid using has_reg_type, use the max value
depending on the architecture. For x86, use TYPE_STATE_MAX_REGS_X86
since max number of regs is 16. Update has_reg_type to
pass "struct arch" also as one of the parameters.
Signed-off-by: Athira Rajeev<atrajeev@...ux.vnet.ibm.com>
---
tools/perf/arch/x86/annotate/instructions.c | 20 ++++++++++----------
tools/perf/util/annotate-data.c | 13 +++++++++----
tools/perf/util/annotate-data.h | 6 ++++--
3 files changed, 23 insertions(+), 16 deletions(-)
diff --git a/tools/perf/arch/x86/annotate/instructions.c b/tools/perf/arch/x86/annotate/instructions.c
index 7b7d462c6c6b..ea1dc686e7b4 100644
--- a/tools/perf/arch/x86/annotate/instructions.c
+++ b/tools/perf/arch/x86/annotate/instructions.c
@@ -263,14 +263,14 @@ static void update_insn_state_x86(struct type_state *state,
struct map_symbol *ms = dloc->ms;
u64 ip = ms->sym->start + dl->al.offset;
- if (!has_reg_type(state, dst->reg1))
+ if (!has_reg_type(state, dst->reg1, dloc->arch))
return;
tsr = &state->regs[dst->reg1];
if (src->imm)
imm_value = src->offset;
- else if (has_reg_type(state, src->reg1) &&
+ else if (has_reg_type(state, src->reg1, dloc->arch) &&
state->regs[src->reg1].kind == TSR_KIND_CONST)
imm_value = state->regs[src->reg1].imm_value;
else if (src->reg1 == DWARF_REG_PC) {
@@ -321,7 +321,7 @@ static void update_insn_state_x86(struct type_state *state,
/* Case 1. register to register or segment:offset to register transfers */
if (!src->mem_ref && !dst->mem_ref) {
- if (!has_reg_type(state, dst->reg1))
+ if (!has_reg_type(state, dst->reg1, dloc->arch))
return;
tsr = &state->regs[dst->reg1];
@@ -374,7 +374,7 @@ static void update_insn_state_x86(struct type_state *state,
return;
}
- if (!has_reg_type(state, src->reg1) ||
+ if (!has_reg_type(state, src->reg1, dloc->arch) ||
!state->regs[src->reg1].ok) {
tsr->ok = false;
return;
@@ -392,7 +392,7 @@ static void update_insn_state_x86(struct type_state *state,
if (src->mem_ref && !dst->mem_ref) {
int sreg = src->reg1;
- if (!has_reg_type(state, dst->reg1))
+ if (!has_reg_type(state, dst->reg1, dloc->arch))
return;
tsr = &state->regs[dst->reg1];
@@ -427,7 +427,7 @@ static void update_insn_state_x86(struct type_state *state,
pr_debug_type_name(&tsr->type, tsr->kind);
}
/* And then dereference the pointer if it has one */
- else if (has_reg_type(state, sreg) && state->regs[sreg].ok &&
+ else if (has_reg_type(state, sreg, dloc->arch) && state->regs[sreg].ok &&
state->regs[sreg].kind == TSR_KIND_TYPE &&
die_deref_ptr_type(&state->regs[sreg].type,
src->offset, &type_die)) {
@@ -464,7 +464,7 @@ static void update_insn_state_x86(struct type_state *state,
pr_debug_type_name(&type_die, tsr->kind);
}
/* And check percpu access with base register */
- else if (has_reg_type(state, sreg) &&
+ else if (has_reg_type(state, sreg, dloc->arch) &&
state->regs[sreg].kind == TSR_KIND_PERCPU_BASE) {
u64 ip = dloc->ms->sym->start + dl->al.offset;
u64 var_addr = src->offset;
@@ -473,7 +473,7 @@ static void update_insn_state_x86(struct type_state *state,
if (src->multi_regs) {
int reg2 = (sreg == src->reg1) ? src->reg2 : src->reg1;
- if (has_reg_type(state, reg2) && state->regs[reg2].ok &&
+ if (has_reg_type(state, reg2, dloc->arch) && state->regs[reg2].ok &&
state->regs[reg2].kind == TSR_KIND_CONST)
var_addr += state->regs[reg2].imm_value;
}
@@ -504,7 +504,7 @@ static void update_insn_state_x86(struct type_state *state,
}
}
/* And then dereference the calculated pointer if it has one */
- else if (has_reg_type(state, sreg) && state->regs[sreg].ok &&
+ else if (has_reg_type(state, sreg, dloc->arch) && state->regs[sreg].ok &&
state->regs[sreg].kind == TSR_KIND_POINTER &&
die_get_member_type(&state->regs[sreg].type,
src->offset, &type_die)) {
@@ -543,7 +543,7 @@ static void update_insn_state_x86(struct type_state *state,
}
/* Case 3. register to memory transfers */
if (!src->mem_ref && dst->mem_ref) {
- if (!has_reg_type(state, src->reg1) ||
+ if (!has_reg_type(state, src->reg1, dloc->arch) ||
!state->regs[src->reg1].ok)
return;
diff --git a/tools/perf/util/annotate-data.c b/tools/perf/util/annotate-data.c
index 7a48c3d72b89..fac9d3cdd318 100644
--- a/tools/perf/util/annotate-data.c
+++ b/tools/perf/util/annotate-data.c
@@ -131,9 +131,14 @@ static void pr_debug_location(Dwarf_Die *die, u64 pc, int reg)
}
}
-bool has_reg_type(struct type_state *state, int reg)
+bool has_reg_type(struct type_state *state, int reg, struct arch *arch)
{
- return (unsigned)reg < ARRAY_SIZE(state->regs);
+ if (arch__is(arch, "x86"))
+ return (unsigned)reg < TYPE_STATE_MAX_REGS_x86;
+ else if (arch__is(arch, "powerpc"))
+ return (unsigned)reg < TYPE_STATE_MAX_REGS_PPC;
+ else
+ return (unsigned)reg < ARRAY_SIZE(state->regs);
}
static void init_type_state(struct type_state *state, struct arch *arch)
@@ -707,7 +712,7 @@ static void update_var_state(struct type_state *state, struct data_loc_info *dlo
pr_debug_dtp("var [%"PRIx64"] -%#x(stack)",
insn_offset, -var->offset + fb_offset);
pr_debug_type_name(&mem_die, TSR_KIND_TYPE);
- } else if (has_reg_type(state, var->reg) && var->offset == 0) {
+ } else if (has_reg_type(state, var->reg, dloc->arch) && var->offset == 0) {
struct type_state_reg *reg;
reg = &state->regs[var->reg];
@@ -943,7 +948,7 @@ static int check_matching_type(struct type_state *state,
if (dloc->op->reg2 == reg)
reg2 = dloc->op->reg1;
- if (has_reg_type(state, reg2) && state->regs[reg2].ok &&
+ if (has_reg_type(state, reg2, dloc->arch) && state->regs[reg2].ok &&
state->regs[reg2].kind == TSR_KIND_CONST)
var_addr += state->regs[reg2].imm_value;
}
diff --git a/tools/perf/util/annotate-data.h b/tools/perf/util/annotate-data.h
index 6fe8ee8b8410..4d8682cdc53c 100644
--- a/tools/perf/util/annotate-data.h
+++ b/tools/perf/util/annotate-data.h
@@ -189,7 +189,9 @@ struct type_state_stack {
};
/* FIXME: This should be arch-dependent */
-#define TYPE_STATE_MAX_REGS 16
+#define TYPE_STATE_MAX_REGS 32
+#define TYPE_STATE_MAX_REGS_x86 16
+#define TYPE_STATE_MAX_REGS_PPC 32
/*
* State table to maintain type info in each register and stack location.
@@ -224,7 +226,7 @@ void global_var_type__tree_delete(struct rb_root *root);
int hist_entry__annotate_data_tty(struct hist_entry *he, struct evsel *evsel);
-bool has_reg_type(struct type_state *state, int reg);
+bool has_reg_type(struct type_state *state, int reg, struct arch *arch);
struct type_state_stack *findnew_stack_state(struct type_state *state,
int offset, u8 kind,
Dwarf_Die *type_die);
--
2.43.0
Powered by blists - more mailing lists