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Diffstat (limited to 'src/third_party/unwind/dist/include/libunwind-x86.h')
| -rw-r--r-- | src/third_party/unwind/dist/include/libunwind-x86.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/include/libunwind-x86.h b/src/third_party/unwind/dist/include/libunwind-x86.h new file mode 100644 index 00000000000..40fe0464f2f --- /dev/null +++ b/src/third_party/unwind/dist/include/libunwind-x86.h @@ -0,0 +1,187 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2002-2004 Hewlett-Packard Co + Contributed by David Mosberger-Tang <davidm@hpl.hp.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. */ + +#ifndef LIBUNWIND_H +#define LIBUNWIND_H + +#if defined(__cplusplus) || defined(c_plusplus) +extern "C" { +#endif + +#include <sys/types.h> +#include <inttypes.h> +#include <ucontext.h> + +#define UNW_TARGET x86 +#define UNW_TARGET_X86 1 + +#define _U_TDEP_QP_TRUE 0 /* see libunwind-dynamic.h */ + +/* This needs to be big enough to accommodate "struct cursor", while + leaving some slack for future expansion. Changing this value will + require recompiling all users of this library. Stack allocation is + relatively cheap and unwind-state copying is relatively rare, so we + want to err on making it rather too big than too small. */ +#define UNW_TDEP_CURSOR_LEN 127 + +typedef uint32_t unw_word_t; +typedef int32_t unw_sword_t; + +typedef union { + struct { uint8_t b[4]; } val32; + struct { uint8_t b[10]; } val80; + struct { uint8_t b[16]; } val128; +} unw_tdep_fpreg_t; + +typedef enum + { + /* Note: general registers are expected to start with index 0. + This convention facilitates architecture-independent + implementation of the C++ exception handling ABI. See + _Unwind_SetGR() and _Unwind_GetGR() for details. + + The described register usage convention is based on "System V + Application Binary Interface, Intel386 Architecture Processor + Supplement, Fourth Edition" at + + http://www.linuxbase.org/spec/refspecs/elf/abi386-4.pdf + + It would have been nice to use the same register numbering as + DWARF, but that doesn't work because the libunwind requires + that the exception argument registers be consecutive, which the + wouldn't be with the DWARF numbering. */ + UNW_X86_EAX, /* scratch (exception argument 1) */ + UNW_X86_EDX, /* scratch (exception argument 2) */ + UNW_X86_ECX, /* scratch */ + UNW_X86_EBX, /* preserved */ + UNW_X86_ESI, /* preserved */ + UNW_X86_EDI, /* preserved */ + UNW_X86_EBP, /* (optional) frame-register */ + UNW_X86_ESP, /* (optional) frame-register */ + UNW_X86_EIP, /* frame-register */ + UNW_X86_EFLAGS, /* scratch (except for "direction", which is fixed */ + UNW_X86_TRAPNO, /* scratch */ + + /* MMX/stacked-fp registers */ + UNW_X86_ST0, /* fp return value */ + UNW_X86_ST1, /* scratch */ + UNW_X86_ST2, /* scratch */ + UNW_X86_ST3, /* scratch */ + UNW_X86_ST4, /* scratch */ + UNW_X86_ST5, /* scratch */ + UNW_X86_ST6, /* scratch */ + UNW_X86_ST7, /* scratch */ + + UNW_X86_FCW, /* scratch */ + UNW_X86_FSW, /* scratch */ + UNW_X86_FTW, /* scratch */ + UNW_X86_FOP, /* scratch */ + UNW_X86_FCS, /* scratch */ + UNW_X86_FIP, /* scratch */ + UNW_X86_FEA, /* scratch */ + UNW_X86_FDS, /* scratch */ + + /* SSE registers */ + UNW_X86_XMM0_lo, /* scratch */ + UNW_X86_XMM0_hi, /* scratch */ + UNW_X86_XMM1_lo, /* scratch */ + UNW_X86_XMM1_hi, /* scratch */ + UNW_X86_XMM2_lo, /* scratch */ + UNW_X86_XMM2_hi, /* scratch */ + UNW_X86_XMM3_lo, /* scratch */ + UNW_X86_XMM3_hi, /* scratch */ + UNW_X86_XMM4_lo, /* scratch */ + UNW_X86_XMM4_hi, /* scratch */ + UNW_X86_XMM5_lo, /* scratch */ + UNW_X86_XMM5_hi, /* scratch */ + UNW_X86_XMM6_lo, /* scratch */ + UNW_X86_XMM6_hi, /* scratch */ + UNW_X86_XMM7_lo, /* scratch */ + UNW_X86_XMM7_hi, /* scratch */ + + UNW_X86_MXCSR, /* scratch */ + + /* segment registers */ + UNW_X86_GS, /* special */ + UNW_X86_FS, /* special */ + UNW_X86_ES, /* special */ + UNW_X86_DS, /* special */ + UNW_X86_SS, /* special */ + UNW_X86_CS, /* special */ + UNW_X86_TSS, /* special */ + UNW_X86_LDT, /* special */ + + /* frame info (read-only) */ + UNW_X86_CFA, + + UNW_X86_XMM0, /* scratch */ + UNW_X86_XMM1, /* scratch */ + UNW_X86_XMM2, /* scratch */ + UNW_X86_XMM3, /* scratch */ + UNW_X86_XMM4, /* scratch */ + UNW_X86_XMM5, /* scratch */ + UNW_X86_XMM6, /* scratch */ + UNW_X86_XMM7, /* scratch */ + + UNW_TDEP_LAST_REG = UNW_X86_XMM7, + + UNW_TDEP_IP = UNW_X86_EIP, + UNW_TDEP_SP = UNW_X86_ESP, + UNW_TDEP_EH = UNW_X86_EAX + } +x86_regnum_t; + +#define UNW_TDEP_NUM_EH_REGS 2 /* eax and edx are exception args */ + +typedef struct unw_tdep_save_loc + { + /* Additional target-dependent info on a save location. */ + } +unw_tdep_save_loc_t; + +/* On x86, we can directly use ucontext_t as the unwind context. */ +typedef ucontext_t unw_tdep_context_t; + +#include "libunwind-dynamic.h" + +typedef struct + { + /* no x86-specific auxiliary proc-info */ + } +unw_tdep_proc_info_t; + +#include "libunwind-common.h" + +#define unw_tdep_getcontext UNW_ARCH_OBJ(getcontext) +extern int unw_tdep_getcontext (unw_tdep_context_t *); + +#define unw_tdep_is_fpreg UNW_ARCH_OBJ(is_fpreg) +extern int unw_tdep_is_fpreg (int); + +#if defined(__cplusplus) || defined(c_plusplus) +} +#endif + +#endif /* LIBUNWIND_H */ |