mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-11 06:57:39 +01:00
264 lines
6.7 KiB
C
264 lines
6.7 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2006-2007 IBM
|
|
Contributed by
|
|
Corey Ashford <cjashfor@us.ibm.com>
|
|
Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.com>
|
|
|
|
Copied from libunwind-x86_64.h, modified slightly for building
|
|
frysk successfully on ppc64, by Wu Zhou <woodzltc@cn.ibm.com>
|
|
Will be replaced when libunwind is ready on ppc64 platform.
|
|
|
|
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 <ucontext.h>
|
|
|
|
#define UNW_TARGET ppc64
|
|
#define UNW_TARGET_PPC64 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.
|
|
*
|
|
* To simplify this whole process, we are at least initially taking the
|
|
* tack that UNW_PPC64_* map straight across to the .eh_frame column register
|
|
* numbers. These register numbers come from gcc's source in
|
|
* gcc/config/rs6000/rs6000.h
|
|
*
|
|
* UNW_TDEP_CURSOR_LEN is in terms of unw_word_t size. Since we have 115
|
|
* elements in the loc array, each sized 2 * unw_word_t, plus the rest of
|
|
* the cursor struct, this puts us at about 2 * 115 + 40 = 270. Let's
|
|
* round that up to 280.
|
|
*/
|
|
|
|
#define UNW_TDEP_CURSOR_LEN 280
|
|
|
|
#if __WORDSIZE==32
|
|
typedef uint32_t unw_word_t;
|
|
typedef int32_t unw_sword_t;
|
|
#else
|
|
typedef uint64_t unw_word_t;
|
|
typedef int64_t unw_sword_t;
|
|
#endif
|
|
|
|
typedef long double unw_tdep_fpreg_t;
|
|
|
|
/*
|
|
* Vector register (in PowerPC64 used for AltiVec registers)
|
|
*/
|
|
typedef struct {
|
|
uint64_t halves[2];
|
|
} unw_tdep_vreg_t;
|
|
|
|
typedef enum
|
|
{
|
|
UNW_PPC64_R0,
|
|
UNW_PPC64_R1, /* called STACK_POINTER in gcc */
|
|
UNW_PPC64_R2,
|
|
UNW_PPC64_R3,
|
|
UNW_PPC64_R4,
|
|
UNW_PPC64_R5,
|
|
UNW_PPC64_R6,
|
|
UNW_PPC64_R7,
|
|
UNW_PPC64_R8,
|
|
UNW_PPC64_R9,
|
|
UNW_PPC64_R10,
|
|
UNW_PPC64_R11, /* called STATIC_CHAIN in gcc */
|
|
UNW_PPC64_R12,
|
|
UNW_PPC64_R13,
|
|
UNW_PPC64_R14,
|
|
UNW_PPC64_R15,
|
|
UNW_PPC64_R16,
|
|
UNW_PPC64_R17,
|
|
UNW_PPC64_R18,
|
|
UNW_PPC64_R19,
|
|
UNW_PPC64_R20,
|
|
UNW_PPC64_R21,
|
|
UNW_PPC64_R22,
|
|
UNW_PPC64_R23,
|
|
UNW_PPC64_R24,
|
|
UNW_PPC64_R25,
|
|
UNW_PPC64_R26,
|
|
UNW_PPC64_R27,
|
|
UNW_PPC64_R28,
|
|
UNW_PPC64_R29,
|
|
UNW_PPC64_R30,
|
|
UNW_PPC64_R31, /* called HARD_FRAME_POINTER in gcc */
|
|
|
|
UNW_PPC64_F0 = 32,
|
|
UNW_PPC64_F1,
|
|
UNW_PPC64_F2,
|
|
UNW_PPC64_F3,
|
|
UNW_PPC64_F4,
|
|
UNW_PPC64_F5,
|
|
UNW_PPC64_F6,
|
|
UNW_PPC64_F7,
|
|
UNW_PPC64_F8,
|
|
UNW_PPC64_F9,
|
|
UNW_PPC64_F10,
|
|
UNW_PPC64_F11,
|
|
UNW_PPC64_F12,
|
|
UNW_PPC64_F13,
|
|
UNW_PPC64_F14,
|
|
UNW_PPC64_F15,
|
|
UNW_PPC64_F16,
|
|
UNW_PPC64_F17,
|
|
UNW_PPC64_F18,
|
|
UNW_PPC64_F19,
|
|
UNW_PPC64_F20,
|
|
UNW_PPC64_F21,
|
|
UNW_PPC64_F22,
|
|
UNW_PPC64_F23,
|
|
UNW_PPC64_F24,
|
|
UNW_PPC64_F25,
|
|
UNW_PPC64_F26,
|
|
UNW_PPC64_F27,
|
|
UNW_PPC64_F28,
|
|
UNW_PPC64_F29,
|
|
UNW_PPC64_F30,
|
|
UNW_PPC64_F31,
|
|
/* Note that there doesn't appear to be an .eh_frame register column
|
|
for the FPSCR register. I don't know why this is. Since .eh_frame
|
|
info is what this implementation uses for unwinding, we have no way
|
|
to unwind this register, and so we will not expose an FPSCR register
|
|
number in the libunwind API.
|
|
*/
|
|
|
|
UNW_PPC64_LR = 65,
|
|
UNW_PPC64_CTR = 66,
|
|
UNW_PPC64_ARG_POINTER = 67,
|
|
|
|
UNW_PPC64_CR0 = 68,
|
|
UNW_PPC64_CR1,
|
|
UNW_PPC64_CR2,
|
|
UNW_PPC64_CR3,
|
|
UNW_PPC64_CR4,
|
|
/* CR5 .. CR7 are currently unused */
|
|
UNW_PPC64_CR5,
|
|
UNW_PPC64_CR6,
|
|
UNW_PPC64_CR7,
|
|
|
|
UNW_PPC64_XER = 76,
|
|
|
|
UNW_PPC64_V0 = 77,
|
|
UNW_PPC64_V1,
|
|
UNW_PPC64_V2,
|
|
UNW_PPC64_V3,
|
|
UNW_PPC64_V4,
|
|
UNW_PPC64_V5,
|
|
UNW_PPC64_V6,
|
|
UNW_PPC64_V7,
|
|
UNW_PPC64_V8,
|
|
UNW_PPC64_V9,
|
|
UNW_PPC64_V10,
|
|
UNW_PPC64_V11,
|
|
UNW_PPC64_V12,
|
|
UNW_PPC64_V13,
|
|
UNW_PPC64_V14,
|
|
UNW_PPC64_V15,
|
|
UNW_PPC64_V16,
|
|
UNW_PPC64_V17,
|
|
UNW_PPC64_V18,
|
|
UNW_PPC64_V19,
|
|
UNW_PPC64_V20,
|
|
UNW_PPC64_V21,
|
|
UNW_PPC64_V22,
|
|
UNW_PPC64_V23,
|
|
UNW_PPC64_V24,
|
|
UNW_PPC64_V25,
|
|
UNW_PPC64_V26,
|
|
UNW_PPC64_V27,
|
|
UNW_PPC64_V28,
|
|
UNW_PPC64_V29,
|
|
UNW_PPC64_V30,
|
|
UNW_PPC64_V31,
|
|
|
|
UNW_PPC64_VRSAVE = 109,
|
|
UNW_PPC64_VSCR = 110,
|
|
UNW_PPC64_SPE_ACC = 111,
|
|
UNW_PPC64_SPEFSCR = 112,
|
|
|
|
/* frame info (read-only) */
|
|
UNW_PPC64_FRAME_POINTER,
|
|
UNW_PPC64_NIP,
|
|
|
|
|
|
UNW_TDEP_LAST_REG = UNW_PPC64_NIP,
|
|
|
|
UNW_TDEP_IP = UNW_PPC64_NIP,
|
|
UNW_TDEP_SP = UNW_PPC64_R1,
|
|
UNW_TDEP_EH = UNW_PPC64_R12
|
|
}
|
|
ppc64_regnum_t;
|
|
|
|
/*
|
|
* According to David Edelsohn, GNU gcc uses R3, R4, R5, and maybe R6 for
|
|
* passing parameters to exception handlers.
|
|
*/
|
|
|
|
#define UNW_TDEP_NUM_EH_REGS 4
|
|
|
|
typedef struct unw_tdep_save_loc
|
|
{
|
|
/* Additional target-dependent info on a save location. */
|
|
}
|
|
unw_tdep_save_loc_t;
|
|
|
|
/* On ppc64, we can directly use ucontext_t as the unwind context. */
|
|
typedef ucontext_t unw_tdep_context_t;
|
|
|
|
/* XXX this is not ideal: an application should not be prevented from
|
|
using the "getcontext" name just because it's using libunwind. We
|
|
can't just use __getcontext() either, because that isn't exported
|
|
by glibc... */
|
|
#define unw_tdep_getcontext(uc) (getcontext (uc), 0)
|
|
|
|
#include "libunwind-dynamic.h"
|
|
|
|
typedef struct
|
|
{
|
|
/* no ppc64-specific auxiliary proc-info */
|
|
}
|
|
unw_tdep_proc_info_t;
|
|
|
|
#include "libunwind-common.h"
|
|
|
|
#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 */
|