diff options
Diffstat (limited to 'src/third_party/unwind/dist/src/coredump/_UCD_access_reg_linux.c')
| -rw-r--r-- | src/third_party/unwind/dist/src/coredump/_UCD_access_reg_linux.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/coredump/_UCD_access_reg_linux.c b/src/third_party/unwind/dist/src/coredump/_UCD_access_reg_linux.c new file mode 100644 index 00000000000..43792f849b3 --- /dev/null +++ b/src/third_party/unwind/dist/src/coredump/_UCD_access_reg_linux.c @@ -0,0 +1,149 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2012 Tommi Rantala <tt.rantala@gmail.com> + +This file is part of libunwind. + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ + +#include "_UCD_lib.h" + +#include "_UCD_internal.h" + +int +_UCD_access_reg (unw_addr_space_t as, + unw_regnum_t regnum, unw_word_t *valp, + int write, void *arg) +{ + struct UCD_info *ui = arg; + + if (write) + { + Debug(0, "write is not supported\n"); + return -UNW_EINVAL; + } + + if (regnum < 0) + goto badreg; + +#if defined(UNW_TARGET_AARCH64) + if (regnum >= UNW_AARCH64_FPCR) + goto badreg; +#elif defined(UNW_TARGET_ARM) + if (regnum >= 16) + goto badreg; +#elif defined(UNW_TARGET_SH) + if (regnum > UNW_SH_PR) + goto badreg; +#elif defined(UNW_TARGET_TILEGX) + if (regnum > UNW_TILEGX_CFA) + goto badreg; +#elif defined(UNW_TARGET_S390X) + if (regnum > UNW_S390X_R15) + goto badreg; +#else +#if defined(UNW_TARGET_MIPS) + static const uint8_t remap_regs[] = + { + [UNW_MIPS_R0] = EF_REG0, + [UNW_MIPS_R1] = EF_REG1, + [UNW_MIPS_R2] = EF_REG2, + [UNW_MIPS_R3] = EF_REG3, + [UNW_MIPS_R4] = EF_REG4, + [UNW_MIPS_R5] = EF_REG5, + [UNW_MIPS_R6] = EF_REG6, + [UNW_MIPS_R7] = EF_REG7, + [UNW_MIPS_R8] = EF_REG8, + [UNW_MIPS_R9] = EF_REG9, + [UNW_MIPS_R10] = EF_REG10, + [UNW_MIPS_R11] = EF_REG11, + [UNW_MIPS_R12] = EF_REG12, + [UNW_MIPS_R13] = EF_REG13, + [UNW_MIPS_R14] = EF_REG14, + [UNW_MIPS_R15] = EF_REG15, + [UNW_MIPS_R16] = EF_REG16, + [UNW_MIPS_R17] = EF_REG17, + [UNW_MIPS_R18] = EF_REG18, + [UNW_MIPS_R19] = EF_REG19, + [UNW_MIPS_R20] = EF_REG20, + [UNW_MIPS_R21] = EF_REG21, + [UNW_MIPS_R22] = EF_REG22, + [UNW_MIPS_R23] = EF_REG23, + [UNW_MIPS_R24] = EF_REG24, + [UNW_MIPS_R25] = EF_REG25, + [UNW_MIPS_R28] = EF_REG28, + [UNW_MIPS_R29] = EF_REG29, + [UNW_MIPS_R30] = EF_REG30, + [UNW_MIPS_R31] = EF_REG31, + [UNW_MIPS_PC] = EF_CP0_EPC, + }; +#elif defined(UNW_TARGET_X86) + static const uint8_t remap_regs[] = + { + /* names from libunwind-x86.h */ + [UNW_X86_EAX] = offsetof(struct user_regs_struct, eax) / sizeof(long), + [UNW_X86_EDX] = offsetof(struct user_regs_struct, edx) / sizeof(long), + [UNW_X86_ECX] = offsetof(struct user_regs_struct, ecx) / sizeof(long), + [UNW_X86_EBX] = offsetof(struct user_regs_struct, ebx) / sizeof(long), + [UNW_X86_ESI] = offsetof(struct user_regs_struct, esi) / sizeof(long), + [UNW_X86_EDI] = offsetof(struct user_regs_struct, edi) / sizeof(long), + [UNW_X86_EBP] = offsetof(struct user_regs_struct, ebp) / sizeof(long), + [UNW_X86_ESP] = offsetof(struct user_regs_struct, esp) / sizeof(long), + [UNW_X86_EIP] = offsetof(struct user_regs_struct, eip) / sizeof(long), + [UNW_X86_EFLAGS] = offsetof(struct user_regs_struct, eflags) / sizeof(long), + [UNW_X86_TRAPNO] = offsetof(struct user_regs_struct, orig_eax) / sizeof(long), + }; +#elif defined(UNW_TARGET_X86_64) + static const int8_t remap_regs[] = + { + [UNW_X86_64_RAX] = offsetof(struct user_regs_struct, rax) / sizeof(long), + [UNW_X86_64_RDX] = offsetof(struct user_regs_struct, rdx) / sizeof(long), + [UNW_X86_64_RCX] = offsetof(struct user_regs_struct, rcx) / sizeof(long), + [UNW_X86_64_RBX] = offsetof(struct user_regs_struct, rbx) / sizeof(long), + [UNW_X86_64_RSI] = offsetof(struct user_regs_struct, rsi) / sizeof(long), + [UNW_X86_64_RDI] = offsetof(struct user_regs_struct, rdi) / sizeof(long), + [UNW_X86_64_RBP] = offsetof(struct user_regs_struct, rbp) / sizeof(long), + [UNW_X86_64_RSP] = offsetof(struct user_regs_struct, rsp) / sizeof(long), + [UNW_X86_64_RIP] = offsetof(struct user_regs_struct, rip) / sizeof(long), + }; +#else +#error Port me +#endif + + if (regnum >= (unw_regnum_t)ARRAY_SIZE(remap_regs)) + goto badreg; + + regnum = remap_regs[regnum]; +#endif + + /* pr_reg is a long[] array, but it contains struct user_regs_struct's + * image. + */ + Debug(1, "pr_reg[%d]:%ld (0x%lx)\n", regnum, + (long)ui->prstatus->pr_reg[regnum], + (long)ui->prstatus->pr_reg[regnum] + ); + *valp = ui->prstatus->pr_reg[regnum]; + + return 0; + +badreg: + Debug(0, "bad regnum:%d\n", regnum); + return -UNW_EINVAL; +} |