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Date: Wed, 24 Jul 2019 10:54:35 +0800
From: kbuild test robot <lkp@...el.com>
To: Max Filippov <jcmvbkbc@...il.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: arch/xtensa/kernel/coprocessor.S:128: Error: literal pool location
required for text-section-literals; specify with .literal_position
Hi Max,
First bad commit (maybe != root cause):
tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ad5e427e0f6b702e52c11d1f7b2b7be3bac7de82
commit: d6d5f19e21d98c0607ff029e4e2e508d4cdd1d5a xtensa: abstract 'entry' and 'retw' in assembly code
date: 2 weeks ago
config: xtensa-audio_kc705_defconfig (attached as .config)
compiler: xtensa-test_kc705_hifi-linux-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout d6d5f19e21d98c0607ff029e4e2e508d4cdd1d5a
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=xtensa
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
arch/xtensa/kernel/coprocessor.S: Assembler messages:
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_ovf_sar'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_bithead'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_ts_fts_bu_bp'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_cw_sd_no'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_cbegin0'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'rur.ae_cend0'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_s64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_salign64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_salign64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_salign64.i'
arch/xtensa/kernel/coprocessor.S:69: Error: unknown opcode or format name 'ae_salign64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_ovf_sar'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_bithead'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_ts_fts_bu_bp'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_cw_sd_no'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_cbegin0'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'wur.ae_cend0'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_l64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_lalign64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_lalign64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_lalign64.i'
arch/xtensa/kernel/coprocessor.S:78: Error: unknown opcode or format name 'ae_lalign64.i'
arch/xtensa/kernel/coprocessor.S:125: Error: unknown opcode or format name 'abi_entry'
>> arch/xtensa/kernel/coprocessor.S:128: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:137: Error: unknown opcode or format name 'abi_ret'
arch/xtensa/kernel/coprocessor.S:158: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:199: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:216: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:217: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:228: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:238: Error: literal pool location required for text-section-literals; specify with .literal_position
arch/xtensa/kernel/coprocessor.S:239: Error: literal pool location required for text-section-literals; specify with .literal_position
>> arch/xtensa/kernel/coprocessor.S:128: Error: literal pool location required for text-section-literals; specify with .literal_position
vim +128 arch/xtensa/kernel/coprocessor.S
5a0015d62668e64 Chris Zankel 2005-06-23 30
c658eac628aa8df Chris Zankel 2008-02-12 31 /*
c658eac628aa8df Chris Zankel 2008-02-12 32 * Macros for lazy context switch.
c658eac628aa8df Chris Zankel 2008-02-12 33 */
5a0015d62668e64 Chris Zankel 2005-06-23 34
c658eac628aa8df Chris Zankel 2008-02-12 35 #define SAVE_CP_REGS(x) \
5dacbbef3d29598 Max Filippov 2018-11-25 36 .if XTENSA_HAVE_COPROCESSOR(x); \
c658eac628aa8df Chris Zankel 2008-02-12 37 .align 4; \
c658eac628aa8df Chris Zankel 2008-02-12 38 .Lsave_cp_regs_cp##x: \
c658eac628aa8df Chris Zankel 2008-02-12 39 xchal_cp##x##_store a2 a4 a5 a6 a7; \
5dacbbef3d29598 Max Filippov 2018-11-25 40 jx a0; \
5dacbbef3d29598 Max Filippov 2018-11-25 41 .endif
5a0015d62668e64 Chris Zankel 2005-06-23 42
c658eac628aa8df Chris Zankel 2008-02-12 43 #define SAVE_CP_REGS_TAB(x) \
c658eac628aa8df Chris Zankel 2008-02-12 44 .if XTENSA_HAVE_COPROCESSOR(x); \
5dacbbef3d29598 Max Filippov 2018-11-25 45 .long .Lsave_cp_regs_cp##x; \
c658eac628aa8df Chris Zankel 2008-02-12 46 .else; \
c658eac628aa8df Chris Zankel 2008-02-12 47 .long 0; \
c658eac628aa8df Chris Zankel 2008-02-12 48 .endif; \
c658eac628aa8df Chris Zankel 2008-02-12 49 .long THREAD_XTREGS_CP##x
5a0015d62668e64 Chris Zankel 2005-06-23 50
5a0015d62668e64 Chris Zankel 2005-06-23 51
c658eac628aa8df Chris Zankel 2008-02-12 52 #define LOAD_CP_REGS(x) \
5dacbbef3d29598 Max Filippov 2018-11-25 53 .if XTENSA_HAVE_COPROCESSOR(x); \
c658eac628aa8df Chris Zankel 2008-02-12 54 .align 4; \
c658eac628aa8df Chris Zankel 2008-02-12 55 .Lload_cp_regs_cp##x: \
c658eac628aa8df Chris Zankel 2008-02-12 56 xchal_cp##x##_load a2 a4 a5 a6 a7; \
5dacbbef3d29598 Max Filippov 2018-11-25 57 jx a0; \
5dacbbef3d29598 Max Filippov 2018-11-25 58 .endif
5a0015d62668e64 Chris Zankel 2005-06-23 59
c658eac628aa8df Chris Zankel 2008-02-12 60 #define LOAD_CP_REGS_TAB(x) \
c658eac628aa8df Chris Zankel 2008-02-12 61 .if XTENSA_HAVE_COPROCESSOR(x); \
5dacbbef3d29598 Max Filippov 2018-11-25 62 .long .Lload_cp_regs_cp##x; \
c658eac628aa8df Chris Zankel 2008-02-12 63 .else; \
c658eac628aa8df Chris Zankel 2008-02-12 64 .long 0; \
c658eac628aa8df Chris Zankel 2008-02-12 65 .endif; \
c658eac628aa8df Chris Zankel 2008-02-12 66 .long THREAD_XTREGS_CP##x
5a0015d62668e64 Chris Zankel 2005-06-23 67
c658eac628aa8df Chris Zankel 2008-02-12 68 SAVE_CP_REGS(0)
c658eac628aa8df Chris Zankel 2008-02-12 69 SAVE_CP_REGS(1)
c658eac628aa8df Chris Zankel 2008-02-12 70 SAVE_CP_REGS(2)
c658eac628aa8df Chris Zankel 2008-02-12 71 SAVE_CP_REGS(3)
c658eac628aa8df Chris Zankel 2008-02-12 72 SAVE_CP_REGS(4)
c658eac628aa8df Chris Zankel 2008-02-12 73 SAVE_CP_REGS(5)
c658eac628aa8df Chris Zankel 2008-02-12 74 SAVE_CP_REGS(6)
c658eac628aa8df Chris Zankel 2008-02-12 75 SAVE_CP_REGS(7)
5a0015d62668e64 Chris Zankel 2005-06-23 76
c658eac628aa8df Chris Zankel 2008-02-12 77 LOAD_CP_REGS(0)
c658eac628aa8df Chris Zankel 2008-02-12 @78 LOAD_CP_REGS(1)
c658eac628aa8df Chris Zankel 2008-02-12 79 LOAD_CP_REGS(2)
c658eac628aa8df Chris Zankel 2008-02-12 80 LOAD_CP_REGS(3)
c658eac628aa8df Chris Zankel 2008-02-12 81 LOAD_CP_REGS(4)
c658eac628aa8df Chris Zankel 2008-02-12 82 LOAD_CP_REGS(5)
c658eac628aa8df Chris Zankel 2008-02-12 83 LOAD_CP_REGS(6)
c658eac628aa8df Chris Zankel 2008-02-12 84 LOAD_CP_REGS(7)
5a0015d62668e64 Chris Zankel 2005-06-23 85
5dacbbef3d29598 Max Filippov 2018-11-25 86 .section ".rodata", "a"
c658eac628aa8df Chris Zankel 2008-02-12 87 .align 4
c658eac628aa8df Chris Zankel 2008-02-12 88 .Lsave_cp_regs_jump_table:
c658eac628aa8df Chris Zankel 2008-02-12 89 SAVE_CP_REGS_TAB(0)
c658eac628aa8df Chris Zankel 2008-02-12 90 SAVE_CP_REGS_TAB(1)
c658eac628aa8df Chris Zankel 2008-02-12 91 SAVE_CP_REGS_TAB(2)
c658eac628aa8df Chris Zankel 2008-02-12 92 SAVE_CP_REGS_TAB(3)
c658eac628aa8df Chris Zankel 2008-02-12 93 SAVE_CP_REGS_TAB(4)
c658eac628aa8df Chris Zankel 2008-02-12 94 SAVE_CP_REGS_TAB(5)
c658eac628aa8df Chris Zankel 2008-02-12 95 SAVE_CP_REGS_TAB(6)
c658eac628aa8df Chris Zankel 2008-02-12 96 SAVE_CP_REGS_TAB(7)
5a0015d62668e64 Chris Zankel 2005-06-23 97
c658eac628aa8df Chris Zankel 2008-02-12 98 .Lload_cp_regs_jump_table:
c658eac628aa8df Chris Zankel 2008-02-12 99 LOAD_CP_REGS_TAB(0)
c658eac628aa8df Chris Zankel 2008-02-12 100 LOAD_CP_REGS_TAB(1)
c658eac628aa8df Chris Zankel 2008-02-12 101 LOAD_CP_REGS_TAB(2)
c658eac628aa8df Chris Zankel 2008-02-12 102 LOAD_CP_REGS_TAB(3)
c658eac628aa8df Chris Zankel 2008-02-12 103 LOAD_CP_REGS_TAB(4)
c658eac628aa8df Chris Zankel 2008-02-12 104 LOAD_CP_REGS_TAB(5)
c658eac628aa8df Chris Zankel 2008-02-12 105 LOAD_CP_REGS_TAB(6)
c658eac628aa8df Chris Zankel 2008-02-12 106 LOAD_CP_REGS_TAB(7)
5a0015d62668e64 Chris Zankel 2005-06-23 107
5dacbbef3d29598 Max Filippov 2018-11-25 108 .previous
5dacbbef3d29598 Max Filippov 2018-11-25 109
c658eac628aa8df Chris Zankel 2008-02-12 110 /*
3ffc2df9c76d3e1 Max Filippov 2018-11-26 111 * coprocessor_flush(struct thread_info*, index)
c658eac628aa8df Chris Zankel 2008-02-12 112 * a2 a3
c658eac628aa8df Chris Zankel 2008-02-12 113 *
3ffc2df9c76d3e1 Max Filippov 2018-11-26 114 * Save coprocessor registers for coprocessor 'index'.
c658eac628aa8df Chris Zankel 2008-02-12 115 * The register values are saved to or loaded from the coprocessor area
c658eac628aa8df Chris Zankel 2008-02-12 116 * inside the task_info structure.
c658eac628aa8df Chris Zankel 2008-02-12 117 *
3ffc2df9c76d3e1 Max Filippov 2018-11-26 118 * Note that this function doesn't update the coprocessor_owner information!
c658eac628aa8df Chris Zankel 2008-02-12 119 *
c658eac628aa8df Chris Zankel 2008-02-12 120 */
c658eac628aa8df Chris Zankel 2008-02-12 121
c658eac628aa8df Chris Zankel 2008-02-12 122 ENTRY(coprocessor_flush)
d1538c4675f37d0 Chris Zankel 2012-11-16 123
d6d5f19e21d98c0 Max Filippov 2019-05-12 124 /* reserve 4 bytes on stack to save a0 */
d6d5f19e21d98c0 Max Filippov 2019-05-12 125 abi_entry(4)
d6d5f19e21d98c0 Max Filippov 2019-05-12 126
c658eac628aa8df Chris Zankel 2008-02-12 127 s32i a0, a1, 0
c658eac628aa8df Chris Zankel 2008-02-12 @128 movi a0, .Lsave_cp_regs_jump_table
c658eac628aa8df Chris Zankel 2008-02-12 129 addx8 a3, a3, a0
c658eac628aa8df Chris Zankel 2008-02-12 130 l32i a4, a3, 4
c658eac628aa8df Chris Zankel 2008-02-12 131 l32i a3, a3, 0
c658eac628aa8df Chris Zankel 2008-02-12 132 add a2, a2, a4
c658eac628aa8df Chris Zankel 2008-02-12 133 beqz a3, 1f
5dacbbef3d29598 Max Filippov 2018-11-25 134 callx0 a3
c658eac628aa8df Chris Zankel 2008-02-12 135 1: l32i a0, a1, 0
d6d5f19e21d98c0 Max Filippov 2019-05-12 136
d6d5f19e21d98c0 Max Filippov 2019-05-12 137 abi_ret(4)
5a0015d62668e64 Chris Zankel 2005-06-23 138
d1538c4675f37d0 Chris Zankel 2012-11-16 139 ENDPROC(coprocessor_flush)
d1538c4675f37d0 Chris Zankel 2012-11-16 140
5a0015d62668e64 Chris Zankel 2005-06-23 141 /*
c658eac628aa8df Chris Zankel 2008-02-12 142 * Entry condition:
5a0015d62668e64 Chris Zankel 2005-06-23 143 *
c658eac628aa8df Chris Zankel 2008-02-12 144 * a0: trashed, original value saved on stack (PT_AREG0)
c658eac628aa8df Chris Zankel 2008-02-12 145 * a1: a1
c658eac628aa8df Chris Zankel 2008-02-12 146 * a2: new stack pointer, original in DEPC
99d5040ebc3cccc Max Filippov 2013-07-03 147 * a3: a3
c658eac628aa8df Chris Zankel 2008-02-12 148 * depc: a2, original value saved on stack (PT_DEPC)
99d5040ebc3cccc Max Filippov 2013-07-03 149 * excsave_1: dispatch table
5a0015d62668e64 Chris Zankel 2005-06-23 150 *
c658eac628aa8df Chris Zankel 2008-02-12 151 * PT_DEPC >= VALID_DOUBLE_EXCEPTION_ADDRESS: double exception, DEPC
c658eac628aa8df Chris Zankel 2008-02-12 152 * < VALID_DOUBLE_EXCEPTION_ADDRESS: regular exception
5a0015d62668e64 Chris Zankel 2005-06-23 153 */
5a0015d62668e64 Chris Zankel 2005-06-23 154
c658eac628aa8df Chris Zankel 2008-02-12 155 ENTRY(fast_coprocessor_double)
d1538c4675f37d0 Chris Zankel 2012-11-16 156
bc5378fcba97431 Max Filippov 2012-10-15 157 wsr a0, excsave1
2da03d4114b2587 Max Filippov 2017-12-09 158 call0 unrecoverable_exception
c658eac628aa8df Chris Zankel 2008-02-12 159
d1538c4675f37d0 Chris Zankel 2012-11-16 160 ENDPROC(fast_coprocessor_double)
c658eac628aa8df Chris Zankel 2008-02-12 161
c658eac628aa8df Chris Zankel 2008-02-12 162 ENTRY(fast_coprocessor)
c658eac628aa8df Chris Zankel 2008-02-12 163
c658eac628aa8df Chris Zankel 2008-02-12 164 /* Save remaining registers a1-a3 and SAR */
c658eac628aa8df Chris Zankel 2008-02-12 165
c658eac628aa8df Chris Zankel 2008-02-12 166 s32i a3, a2, PT_AREG3
bc5378fcba97431 Max Filippov 2012-10-15 167 rsr a3, sar
c658eac628aa8df Chris Zankel 2008-02-12 168 s32i a1, a2, PT_AREG1
c658eac628aa8df Chris Zankel 2008-02-12 169 s32i a3, a2, PT_SAR
c658eac628aa8df Chris Zankel 2008-02-12 170 mov a1, a2
bc5378fcba97431 Max Filippov 2012-10-15 171 rsr a2, depc
c658eac628aa8df Chris Zankel 2008-02-12 172 s32i a2, a1, PT_AREG2
5a0015d62668e64 Chris Zankel 2005-06-23 173
5a0015d62668e64 Chris Zankel 2005-06-23 174 /*
c658eac628aa8df Chris Zankel 2008-02-12 175 * The hal macros require up to 4 temporary registers. We use a3..a6.
5a0015d62668e64 Chris Zankel 2005-06-23 176 */
5a0015d62668e64 Chris Zankel 2005-06-23 177
c658eac628aa8df Chris Zankel 2008-02-12 178 s32i a4, a1, PT_AREG4
c658eac628aa8df Chris Zankel 2008-02-12 179 s32i a5, a1, PT_AREG5
c658eac628aa8df Chris Zankel 2008-02-12 180 s32i a6, a1, PT_AREG6
c658eac628aa8df Chris Zankel 2008-02-12 181
c658eac628aa8df Chris Zankel 2008-02-12 182 /* Find coprocessor number. Subtract first CP EXCCAUSE from EXCCAUSE */
c658eac628aa8df Chris Zankel 2008-02-12 183
bc5378fcba97431 Max Filippov 2012-10-15 184 rsr a3, exccause
c658eac628aa8df Chris Zankel 2008-02-12 185 addi a3, a3, -EXCCAUSE_COPROCESSOR0_DISABLED
c658eac628aa8df Chris Zankel 2008-02-12 186
c658eac628aa8df Chris Zankel 2008-02-12 187 /* Set corresponding CPENABLE bit -> (sar:cp-index, a3: 1<<cp-index)*/
c658eac628aa8df Chris Zankel 2008-02-12 188
c658eac628aa8df Chris Zankel 2008-02-12 189 ssl a3 # SAR: 32 - coprocessor_number
c658eac628aa8df Chris Zankel 2008-02-12 190 movi a2, 1
bc5378fcba97431 Max Filippov 2012-10-15 191 rsr a0, cpenable
c658eac628aa8df Chris Zankel 2008-02-12 192 sll a2, a2
c658eac628aa8df Chris Zankel 2008-02-12 193 or a0, a0, a2
bc5378fcba97431 Max Filippov 2012-10-15 194 wsr a0, cpenable
c658eac628aa8df Chris Zankel 2008-02-12 195 rsync
c658eac628aa8df Chris Zankel 2008-02-12 196
c658eac628aa8df Chris Zankel 2008-02-12 197 /* Retrieve previous owner. (a3 still holds CP number) */
c658eac628aa8df Chris Zankel 2008-02-12 198
c658eac628aa8df Chris Zankel 2008-02-12 199 movi a0, coprocessor_owner # list of owners
c658eac628aa8df Chris Zankel 2008-02-12 200 addx4 a0, a3, a0 # entry for CP
c658eac628aa8df Chris Zankel 2008-02-12 201 l32i a4, a0, 0
c658eac628aa8df Chris Zankel 2008-02-12 202
c658eac628aa8df Chris Zankel 2008-02-12 203 beqz a4, 1f # skip 'save' if no previous owner
c658eac628aa8df Chris Zankel 2008-02-12 204
c658eac628aa8df Chris Zankel 2008-02-12 205 /* Disable coprocessor for previous owner. (a2 = 1 << CP number) */
c658eac628aa8df Chris Zankel 2008-02-12 206
c658eac628aa8df Chris Zankel 2008-02-12 207 l32i a5, a4, THREAD_CPENABLE
c658eac628aa8df Chris Zankel 2008-02-12 208 xor a5, a5, a2 # (1 << cp-id) still in a2
c658eac628aa8df Chris Zankel 2008-02-12 209 s32i a5, a4, THREAD_CPENABLE
c658eac628aa8df Chris Zankel 2008-02-12 210
c658eac628aa8df Chris Zankel 2008-02-12 211 /*
c658eac628aa8df Chris Zankel 2008-02-12 212 * Get context save area and 'call' save routine.
c658eac628aa8df Chris Zankel 2008-02-12 213 * (a4 still holds previous owner (thread_info), a3 CP number)
c658eac628aa8df Chris Zankel 2008-02-12 214 */
c658eac628aa8df Chris Zankel 2008-02-12 215
c658eac628aa8df Chris Zankel 2008-02-12 216 movi a5, .Lsave_cp_regs_jump_table
c658eac628aa8df Chris Zankel 2008-02-12 217 movi a0, 2f # a0: 'return' address
c658eac628aa8df Chris Zankel 2008-02-12 218 addx8 a3, a3, a5 # a3: coprocessor number
c658eac628aa8df Chris Zankel 2008-02-12 219 l32i a2, a3, 4 # a2: xtregs offset
5dacbbef3d29598 Max Filippov 2018-11-25 220 l32i a3, a3, 0 # a3: jump address
c658eac628aa8df Chris Zankel 2008-02-12 221 add a2, a2, a4
5dacbbef3d29598 Max Filippov 2018-11-25 222 jx a3
c658eac628aa8df Chris Zankel 2008-02-12 223
c658eac628aa8df Chris Zankel 2008-02-12 224 /* Note that only a0 and a1 were preserved. */
c658eac628aa8df Chris Zankel 2008-02-12 225
bc5378fcba97431 Max Filippov 2012-10-15 226 2: rsr a3, exccause
c658eac628aa8df Chris Zankel 2008-02-12 227 addi a3, a3, -EXCCAUSE_COPROCESSOR0_DISABLED
c658eac628aa8df Chris Zankel 2008-02-12 228 movi a0, coprocessor_owner
c658eac628aa8df Chris Zankel 2008-02-12 229 addx4 a0, a3, a0
c658eac628aa8df Chris Zankel 2008-02-12 230
c658eac628aa8df Chris Zankel 2008-02-12 231 /* Set new 'owner' (a0 points to the CP owner, a3 contains the CP nr) */
c658eac628aa8df Chris Zankel 2008-02-12 232
c658eac628aa8df Chris Zankel 2008-02-12 233 1: GET_THREAD_INFO (a4, a1)
c658eac628aa8df Chris Zankel 2008-02-12 234 s32i a4, a0, 0
c658eac628aa8df Chris Zankel 2008-02-12 235
c658eac628aa8df Chris Zankel 2008-02-12 236 /* Get context save area and 'call' load routine. */
c658eac628aa8df Chris Zankel 2008-02-12 237
c658eac628aa8df Chris Zankel 2008-02-12 238 movi a5, .Lload_cp_regs_jump_table
c658eac628aa8df Chris Zankel 2008-02-12 239 movi a0, 1f
c658eac628aa8df Chris Zankel 2008-02-12 240 addx8 a3, a3, a5
c658eac628aa8df Chris Zankel 2008-02-12 241 l32i a2, a3, 4 # a2: xtregs offset
5dacbbef3d29598 Max Filippov 2018-11-25 242 l32i a3, a3, 0 # a3: jump address
c658eac628aa8df Chris Zankel 2008-02-12 243 add a2, a2, a4
5dacbbef3d29598 Max Filippov 2018-11-25 244 jx a3
c658eac628aa8df Chris Zankel 2008-02-12 245
c658eac628aa8df Chris Zankel 2008-02-12 246 /* Restore all registers and return from exception handler. */
c658eac628aa8df Chris Zankel 2008-02-12 247
c658eac628aa8df Chris Zankel 2008-02-12 248 1: l32i a6, a1, PT_AREG6
c658eac628aa8df Chris Zankel 2008-02-12 249 l32i a5, a1, PT_AREG5
c658eac628aa8df Chris Zankel 2008-02-12 250 l32i a4, a1, PT_AREG4
c658eac628aa8df Chris Zankel 2008-02-12 251
c658eac628aa8df Chris Zankel 2008-02-12 252 l32i a0, a1, PT_SAR
c658eac628aa8df Chris Zankel 2008-02-12 253 l32i a3, a1, PT_AREG3
c658eac628aa8df Chris Zankel 2008-02-12 254 l32i a2, a1, PT_AREG2
bc5378fcba97431 Max Filippov 2012-10-15 255 wsr a0, sar
c658eac628aa8df Chris Zankel 2008-02-12 256 l32i a0, a1, PT_AREG0
c658eac628aa8df Chris Zankel 2008-02-12 257 l32i a1, a1, PT_AREG1
c658eac628aa8df Chris Zankel 2008-02-12 258
c658eac628aa8df Chris Zankel 2008-02-12 259 rfe
c658eac628aa8df Chris Zankel 2008-02-12 260
d1538c4675f37d0 Chris Zankel 2012-11-16 261 ENDPROC(fast_coprocessor)
d1538c4675f37d0 Chris Zankel 2012-11-16 262
c658eac628aa8df Chris Zankel 2008-02-12 263 .data
d1538c4675f37d0 Chris Zankel 2012-11-16 264
c658eac628aa8df Chris Zankel 2008-02-12 265 ENTRY(coprocessor_owner)
d1538c4675f37d0 Chris Zankel 2012-11-16 266
c658eac628aa8df Chris Zankel 2008-02-12 267 .fill XCHAL_CP_MAX, 4, 0
c658eac628aa8df Chris Zankel 2008-02-12 268
d1538c4675f37d0 Chris Zankel 2012-11-16 269 END(coprocessor_owner)
d1538c4675f37d0 Chris Zankel 2012-11-16 270
c658eac628aa8df Chris Zankel 2008-02-12 271 #endif /* XTENSA_HAVE_COPROCESSORS */
:::::: The code at line 128 was first introduced by commit
:::::: c658eac628aa8df040dfe614556d95e6da3a9ffb [XTENSA] Add support for configurable registers and coprocessors
:::::: TO: Chris Zankel <chris@...kel.net>
:::::: CC: Chris Zankel <chris@...kel.net>
---
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