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Diffstat (limited to 'src/pal/src/libunwind/include/libunwind-mips.h')
| -rw-r--r-- | src/pal/src/libunwind/include/libunwind-mips.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/pal/src/libunwind/include/libunwind-mips.h b/src/pal/src/libunwind/include/libunwind-mips.h new file mode 100644 index 0000000000..97c95e2463 --- /dev/null +++ b/src/pal/src/libunwind/include/libunwind-mips.h @@ -0,0 +1,160 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2008 CodeSourcery + +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 <inttypes.h> +#include <sys/ucontext.h> + +#ifdef mips +# undef mips +#endif + +#define UNW_TARGET mips +#define UNW_TARGET_MIPS 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. */ + +/* FIXME for MIPS. Too big? What do other things use for similar tasks? */ +#define UNW_TDEP_CURSOR_LEN 4096 + +/* The size of a "word" varies on MIPS. This type is used for memory + addresses and register values, which are 32-bit wide for O32 and N32 + ABIs, and 64-bit wide for N64 ABI. */ +#if _MIPS_SIM == _ABI64 +typedef uint64_t unw_word_t; +#else +typedef uint32_t unw_word_t; +#endif +typedef int32_t unw_sword_t; + +/* FIXME: MIPS ABIs. */ +typedef long double unw_tdep_fpreg_t; + +typedef enum + { + UNW_MIPS_R0, + UNW_MIPS_R1, + UNW_MIPS_R2, + UNW_MIPS_R3, + UNW_MIPS_R4, + UNW_MIPS_R5, + UNW_MIPS_R6, + UNW_MIPS_R7, + UNW_MIPS_R8, + UNW_MIPS_R9, + UNW_MIPS_R10, + UNW_MIPS_R11, + UNW_MIPS_R12, + UNW_MIPS_R13, + UNW_MIPS_R14, + UNW_MIPS_R15, + UNW_MIPS_R16, + UNW_MIPS_R17, + UNW_MIPS_R18, + UNW_MIPS_R19, + UNW_MIPS_R20, + UNW_MIPS_R21, + UNW_MIPS_R22, + UNW_MIPS_R23, + UNW_MIPS_R24, + UNW_MIPS_R25, + UNW_MIPS_R26, + UNW_MIPS_R27, + UNW_MIPS_R28, + UNW_MIPS_R29, + UNW_MIPS_R30, + UNW_MIPS_R31, + + UNW_MIPS_PC = 34, + + /* FIXME: Other registers! */ + + /* For MIPS, the CFA is the value of SP (r29) at the call site in the + previous frame. */ + UNW_MIPS_CFA, + + UNW_TDEP_LAST_REG = UNW_MIPS_PC, + + UNW_TDEP_IP = UNW_MIPS_R31, + UNW_TDEP_SP = UNW_MIPS_R29, + UNW_TDEP_EH = UNW_MIPS_R0 /* FIXME. */ + } +mips_regnum_t; + +typedef enum + { + UNW_MIPS_ABI_O32, + UNW_MIPS_ABI_N32, + UNW_MIPS_ABI_N64 + } +mips_abi_t; + +#define UNW_TDEP_NUM_EH_REGS 2 /* FIXME for MIPS. */ + +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. FIXME for + MIPS. */ +typedef ucontext_t unw_tdep_context_t; + +#include "libunwind-dynamic.h" + +typedef struct + { + /* no mips-specific auxiliary proc-info */ + } +unw_tdep_proc_info_t; + +#include "libunwind-common.h" + +/* There is no getcontext() on MIPS. Use a stub version which only saves GP + registers. FIXME: Not ideal, may not be sufficient for all libunwind + use cases. */ +#define unw_tdep_getcontext UNW_ARCH_OBJ(getcontext) +extern int unw_tdep_getcontext (ucontext_t *uc); + +#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 */ |