m2-internship/libunwind-eh_elf
1
0
Fork 0
mirror of https://github.com/tobast/libunwind-eh_elf.git synced 2024-06-25 19:01:44 +02:00
Code Issues Releases Activity

Move get_scratch_loc() to os-specific file.

Browse source
This commit is contained in:
Konstantin Belousov 2010-04-05 22:22:55 +03:00
parent aeee03dd74
commit 79d012348d
4 changed files with 230 additions and 235 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

120
src/x86/Gos-freebsd.c
View file

@ -135,3 +135,123 @@ unw_handle_signal_frame (unw_cursor_t *cursor)
}
return 0;
}
HIDDEN dwarf_loc_t
x86_get_scratch_loc (struct cursor *c, unw_regnum_t reg)
{
unw_word_t addr = c->sigcontext_addr, fpstate_addr, off;
int ret, is_fpstate = 0;
switch (c->sigcontext_format)
{
case X86_SCF_NONE:
return DWARF_REG_LOC (&c->dwarf, reg);
case X86_SCF_FREEBSD_SIGFRAME:
addr += FREEBSD_UC_MCONTEXT_OFF;
break;
case X86_SCF_FREEBSD_SIGFRAME4:
abort();
break;
case X86_SCF_FREEBSD_OSIGFRAME:
/* XXXKIB */
abort();
break;
case X86_SCF_FREEBSD_SYSCALL:
/* XXXKIB */
abort();
break;
default:
/* XXXKIB */
abort();
break;
}
switch (reg)
{
case UNW_X86_GS: off = FREEBSD_UC_MCONTEXT_GS_OFF; break;
case UNW_X86_FS: off = FREEBSD_UC_MCONTEXT_FS_OFF; break;
case UNW_X86_ES: off = FREEBSD_UC_MCONTEXT_ES_OFF; break;
case UNW_X86_DS: off = FREEBSD_UC_MCONTEXT_SS_OFF; break;
case UNW_X86_EDI: off = FREEBSD_UC_MCONTEXT_EDI_OFF; break;
case UNW_X86_ESI: off = FREEBSD_UC_MCONTEXT_ESI_OFF; break;
case UNW_X86_EBP: off = FREEBSD_UC_MCONTEXT_EBP_OFF; break;
case UNW_X86_ESP: off = FREEBSD_UC_MCONTEXT_ESP_OFF; break;
case UNW_X86_EBX: off = FREEBSD_UC_MCONTEXT_EBX_OFF; break;
case UNW_X86_EDX: off = FREEBSD_UC_MCONTEXT_EDX_OFF; break;
case UNW_X86_ECX: off = FREEBSD_UC_MCONTEXT_ECX_OFF; break;
case UNW_X86_EAX: off = FREEBSD_UC_MCONTEXT_EAX_OFF; break;
case UNW_X86_TRAPNO: off = FREEBSD_UC_MCONTEXT_TRAPNO_OFF; break;
case UNW_X86_EIP: off = FREEBSD_UC_MCONTEXT_EIP_OFF; break;
case UNW_X86_CS: off = FREEBSD_UC_MCONTEXT_CS_OFF; break;
case UNW_X86_EFLAGS: off = FREEBSD_UC_MCONTEXT_EFLAGS_OFF; break;
case UNW_X86_SS: off = FREEBSD_UC_MCONTEXT_SS_OFF; break;
/* XXXKIB fix */
case UNW_X86_FCW: is_fpstate = 1; off = LINUX_FPSTATE_CW_OFF; break;
case UNW_X86_FSW: is_fpstate = 1; off = LINUX_FPSTATE_SW_OFF; break;
case UNW_X86_FTW: is_fpstate = 1; off = LINUX_FPSTATE_TAG_OFF; break;
case UNW_X86_FCS: is_fpstate = 1; off = LINUX_FPSTATE_CSSEL_OFF; break;
case UNW_X86_FIP: is_fpstate = 1; off = LINUX_FPSTATE_IPOFF_OFF; break;
case UNW_X86_FEA: is_fpstate = 1; off = LINUX_FPSTATE_DATAOFF_OFF; break;
case UNW_X86_FDS: is_fpstate = 1; off = LINUX_FPSTATE_DATASEL_OFF; break;
case UNW_X86_MXCSR: is_fpstate = 1; off = LINUX_FPSTATE_MXCSR_OFF; break;
/* stacked fp registers */
case UNW_X86_ST0: case UNW_X86_ST1: case UNW_X86_ST2: case UNW_X86_ST3:
case UNW_X86_ST4: case UNW_X86_ST5: case UNW_X86_ST6: case UNW_X86_ST7:
is_fpstate = 1;
off = LINUX_FPSTATE_ST0_OFF + 10*(reg - UNW_X86_ST0);
break;
/* SSE fp registers */
case UNW_X86_XMM0_lo: case UNW_X86_XMM0_hi:
case UNW_X86_XMM1_lo: case UNW_X86_XMM1_hi:
case UNW_X86_XMM2_lo: case UNW_X86_XMM2_hi:
case UNW_X86_XMM3_lo: case UNW_X86_XMM3_hi:
case UNW_X86_XMM4_lo: case UNW_X86_XMM4_hi:
case UNW_X86_XMM5_lo: case UNW_X86_XMM5_hi:
case UNW_X86_XMM6_lo: case UNW_X86_XMM6_hi:
case UNW_X86_XMM7_lo: case UNW_X86_XMM7_hi:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
break;
case UNW_X86_XMM0:
case UNW_X86_XMM1:
case UNW_X86_XMM2:
case UNW_X86_XMM3:
case UNW_X86_XMM4:
case UNW_X86_XMM5:
case UNW_X86_XMM6:
case UNW_X86_XMM7:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 16*(reg - UNW_X86_XMM0);
break;
case UNW_X86_FOP:
case UNW_X86_TSS:
case UNW_X86_LDT:
default:
return DWARF_REG_LOC (&c->dwarf, reg);
}
if (is_fpstate)
{
if ((ret = dwarf_get (&c->dwarf,
DWARF_MEM_LOC (&c->dwarf,
addr + LINUX_SC_FPSTATE_OFF),
&fpstate_addr)) < 0)
return DWARF_NULL_LOC;
if (!fpstate_addr)
return DWARF_NULL_LOC;
return DWARF_MEM_LOC (c, fpstate_addr + off);
}
else
return DWARF_MEM_LOC (c, addr + off);
}

107
src/x86/Gos-linux.c
View file

@ -135,3 +135,110 @@ unw_handle_signal_frame (unw_cursor_t *cursor)
return 0;
}
HIDDEN dwarf_loc_t
x86_get_scratch_loc (struct cursor *c, unw_regnum_t reg)
{
unw_word_t addr = c->sigcontext_addr, fpstate_addr, off;
int ret, is_fpstate = 0;
switch (c->sigcontext_format)
{
case X86_SCF_NONE:
return DWARF_REG_LOC (&c->dwarf, reg);
case X86_SCF_LINUX_SIGFRAME:
break;
case X86_SCF_LINUX_RT_SIGFRAME:
addr += LINUX_UC_MCONTEXT_OFF;
break;
}
switch (reg)
{
case UNW_X86_GS: off = LINUX_SC_GS_OFF; break;
case UNW_X86_FS: off = LINUX_SC_FS_OFF; break;
case UNW_X86_ES: off = LINUX_SC_ES_OFF; break;
case UNW_X86_DS: off = LINUX_SC_DS_OFF; break;
case UNW_X86_EDI: off = LINUX_SC_EDI_OFF; break;
case UNW_X86_ESI: off = LINUX_SC_ESI_OFF; break;
case UNW_X86_EBP: off = LINUX_SC_EBP_OFF; break;
case UNW_X86_ESP: off = LINUX_SC_ESP_OFF; break;
case UNW_X86_EBX: off = LINUX_SC_EBX_OFF; break;
case UNW_X86_EDX: off = LINUX_SC_EDX_OFF; break;
case UNW_X86_ECX: off = LINUX_SC_ECX_OFF; break;
case UNW_X86_EAX: off = LINUX_SC_EAX_OFF; break;
case UNW_X86_TRAPNO: off = LINUX_SC_TRAPNO_OFF; break;
case UNW_X86_EIP: off = LINUX_SC_EIP_OFF; break;
case UNW_X86_CS: off = LINUX_SC_CS_OFF; break;
case UNW_X86_EFLAGS: off = LINUX_SC_EFLAGS_OFF; break;
case UNW_X86_SS: off = LINUX_SC_SS_OFF; break;
/* The following is probably not correct for all possible cases.
Somebody who understands this better should review this for
correctness. */
case UNW_X86_FCW: is_fpstate = 1; off = LINUX_FPSTATE_CW_OFF; break;
case UNW_X86_FSW: is_fpstate = 1; off = LINUX_FPSTATE_SW_OFF; break;
case UNW_X86_FTW: is_fpstate = 1; off = LINUX_FPSTATE_TAG_OFF; break;
case UNW_X86_FCS: is_fpstate = 1; off = LINUX_FPSTATE_CSSEL_OFF; break;
case UNW_X86_FIP: is_fpstate = 1; off = LINUX_FPSTATE_IPOFF_OFF; break;
case UNW_X86_FEA: is_fpstate = 1; off = LINUX_FPSTATE_DATAOFF_OFF; break;
case UNW_X86_FDS: is_fpstate = 1; off = LINUX_FPSTATE_DATASEL_OFF; break;
case UNW_X86_MXCSR: is_fpstate = 1; off = LINUX_FPSTATE_MXCSR_OFF; break;
/* stacked fp registers */
case UNW_X86_ST0: case UNW_X86_ST1: case UNW_X86_ST2: case UNW_X86_ST3:
case UNW_X86_ST4: case UNW_X86_ST5: case UNW_X86_ST6: case UNW_X86_ST7:
is_fpstate = 1;
off = LINUX_FPSTATE_ST0_OFF + 10*(reg - UNW_X86_ST0);
break;
/* SSE fp registers */
case UNW_X86_XMM0_lo: case UNW_X86_XMM0_hi:
case UNW_X86_XMM1_lo: case UNW_X86_XMM1_hi:
case UNW_X86_XMM2_lo: case UNW_X86_XMM2_hi:
case UNW_X86_XMM3_lo: case UNW_X86_XMM3_hi:
case UNW_X86_XMM4_lo: case UNW_X86_XMM4_hi:
case UNW_X86_XMM5_lo: case UNW_X86_XMM5_hi:
case UNW_X86_XMM6_lo: case UNW_X86_XMM6_hi:
case UNW_X86_XMM7_lo: case UNW_X86_XMM7_hi:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
break;
case UNW_X86_XMM0:
case UNW_X86_XMM1:
case UNW_X86_XMM2:
case UNW_X86_XMM3:
case UNW_X86_XMM4:
case UNW_X86_XMM5:
case UNW_X86_XMM6:
case UNW_X86_XMM7:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 16*(reg - UNW_X86_XMM0);
break;
case UNW_X86_FOP:
case UNW_X86_TSS:
case UNW_X86_LDT:
default:
return DWARF_REG_LOC (&c->dwarf, reg);
}
if (is_fpstate)
{
if ((ret = dwarf_get (&c->dwarf,
DWARF_MEM_LOC (&c->dwarf,
addr + LINUX_SC_FPSTATE_OFF),
&fpstate_addr)) < 0)
return DWARF_NULL_LOC;
if (!fpstate_addr)
return DWARF_NULL_LOC;
return DWARF_MEM_LOC (c, fpstate_addr + off);
}
else
return DWARF_MEM_LOC (c, addr + off);
}

236
src/x86/Gregs.c
View file

@ -26,245 +26,11 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "offsets.h"
#include "unwind_i.h"
#if defined __linux__
static inline dwarf_loc_t
get_scratch_loc (struct cursor *c, unw_regnum_t reg)
{
unw_word_t addr = c->sigcontext_addr, fpstate_addr, off;
int ret, is_fpstate = 0;
switch (c->sigcontext_format)
{
case X86_SCF_NONE:
return DWARF_REG_LOC (&c->dwarf, reg);
case X86_SCF_LINUX_SIGFRAME:
break;
case X86_SCF_LINUX_RT_SIGFRAME:
addr += LINUX_UC_MCONTEXT_OFF;
break;
}
switch (reg)
{
case UNW_X86_GS: off = LINUX_SC_GS_OFF; break;
case UNW_X86_FS: off = LINUX_SC_FS_OFF; break;
case UNW_X86_ES: off = LINUX_SC_ES_OFF; break;
case UNW_X86_DS: off = LINUX_SC_DS_OFF; break;
case UNW_X86_EDI: off = LINUX_SC_EDI_OFF; break;
case UNW_X86_ESI: off = LINUX_SC_ESI_OFF; break;
case UNW_X86_EBP: off = LINUX_SC_EBP_OFF; break;
case UNW_X86_ESP: off = LINUX_SC_ESP_OFF; break;
case UNW_X86_EBX: off = LINUX_SC_EBX_OFF; break;
case UNW_X86_EDX: off = LINUX_SC_EDX_OFF; break;
case UNW_X86_ECX: off = LINUX_SC_ECX_OFF; break;
case UNW_X86_EAX: off = LINUX_SC_EAX_OFF; break;
case UNW_X86_TRAPNO: off = LINUX_SC_TRAPNO_OFF; break;
case UNW_X86_EIP: off = LINUX_SC_EIP_OFF; break;
case UNW_X86_CS: off = LINUX_SC_CS_OFF; break;
case UNW_X86_EFLAGS: off = LINUX_SC_EFLAGS_OFF; break;
case UNW_X86_SS: off = LINUX_SC_SS_OFF; break;
/* The following is probably not correct for all possible cases.
Somebody who understands this better should review this for
correctness. */
case UNW_X86_FCW: is_fpstate = 1; off = LINUX_FPSTATE_CW_OFF; break;
case UNW_X86_FSW: is_fpstate = 1; off = LINUX_FPSTATE_SW_OFF; break;
case UNW_X86_FTW: is_fpstate = 1; off = LINUX_FPSTATE_TAG_OFF; break;
case UNW_X86_FCS: is_fpstate = 1; off = LINUX_FPSTATE_CSSEL_OFF; break;
case UNW_X86_FIP: is_fpstate = 1; off = LINUX_FPSTATE_IPOFF_OFF; break;
case UNW_X86_FEA: is_fpstate = 1; off = LINUX_FPSTATE_DATAOFF_OFF; break;
case UNW_X86_FDS: is_fpstate = 1; off = LINUX_FPSTATE_DATASEL_OFF; break;
case UNW_X86_MXCSR: is_fpstate = 1; off = LINUX_FPSTATE_MXCSR_OFF; break;
/* stacked fp registers */
case UNW_X86_ST0: case UNW_X86_ST1: case UNW_X86_ST2: case UNW_X86_ST3:
case UNW_X86_ST4: case UNW_X86_ST5: case UNW_X86_ST6: case UNW_X86_ST7:
is_fpstate = 1;
off = LINUX_FPSTATE_ST0_OFF + 10*(reg - UNW_X86_ST0);
break;
/* SSE fp registers */
case UNW_X86_XMM0_lo: case UNW_X86_XMM0_hi:
case UNW_X86_XMM1_lo: case UNW_X86_XMM1_hi:
case UNW_X86_XMM2_lo: case UNW_X86_XMM2_hi:
case UNW_X86_XMM3_lo: case UNW_X86_XMM3_hi:
case UNW_X86_XMM4_lo: case UNW_X86_XMM4_hi:
case UNW_X86_XMM5_lo: case UNW_X86_XMM5_hi:
case UNW_X86_XMM6_lo: case UNW_X86_XMM6_hi:
case UNW_X86_XMM7_lo: case UNW_X86_XMM7_hi:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
break;
case UNW_X86_XMM0:
case UNW_X86_XMM1:
case UNW_X86_XMM2:
case UNW_X86_XMM3:
case UNW_X86_XMM4:
case UNW_X86_XMM5:
case UNW_X86_XMM6:
case UNW_X86_XMM7:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 16*(reg - UNW_X86_XMM0);
break;
case UNW_X86_FOP:
case UNW_X86_TSS:
case UNW_X86_LDT:
default:
return DWARF_REG_LOC (&c->dwarf, reg);
}
if (is_fpstate)
{
if ((ret = dwarf_get (&c->dwarf,
DWARF_MEM_LOC (&c->dwarf,
addr + LINUX_SC_FPSTATE_OFF),
&fpstate_addr)) < 0)
return DWARF_NULL_LOC;
if (!fpstate_addr)
return DWARF_NULL_LOC;
return DWARF_MEM_LOC (c, fpstate_addr + off);
}
else
return DWARF_MEM_LOC (c, addr + off);
}
#elif defined __FreeBSD__
static inline dwarf_loc_t
get_scratch_loc (struct cursor *c, unw_regnum_t reg)
{
unw_word_t addr = c->sigcontext_addr, fpstate_addr, off;
int ret, is_fpstate = 0;
switch (c->sigcontext_format)
{
case X86_SCF_NONE:
return DWARF_REG_LOC (&c->dwarf, reg);
case X86_SCF_FREEBSD_SIGFRAME:
addr += FREEBSD_UC_MCONTEXT_OFF;
break;
case X86_SCF_FREEBSD_SIGFRAME4:
abort();
break;
case X86_SCF_FREEBSD_OSIGFRAME:
/* XXXKIB */
abort();
break;
case X86_SCF_FREEBSD_SYSCALL:
/* XXXKIB */
abort();
break;
default:
/* XXXKIB */
abort();
break;
}
switch (reg)
{
case UNW_X86_GS: off = FREEBSD_UC_MCONTEXT_GS_OFF; break;
case UNW_X86_FS: off = FREEBSD_UC_MCONTEXT_FS_OFF; break;
case UNW_X86_ES: off = FREEBSD_UC_MCONTEXT_ES_OFF; break;
case UNW_X86_DS: off = FREEBSD_UC_MCONTEXT_SS_OFF; break;
case UNW_X86_EDI: off = FREEBSD_UC_MCONTEXT_EDI_OFF; break;
case UNW_X86_ESI: off = FREEBSD_UC_MCONTEXT_ESI_OFF; break;
case UNW_X86_EBP: off = FREEBSD_UC_MCONTEXT_EBP_OFF; break;
case UNW_X86_ESP: off = FREEBSD_UC_MCONTEXT_ESP_OFF; break;
case UNW_X86_EBX: off = FREEBSD_UC_MCONTEXT_EBX_OFF; break;
case UNW_X86_EDX: off = FREEBSD_UC_MCONTEXT_EDX_OFF; break;
case UNW_X86_ECX: off = FREEBSD_UC_MCONTEXT_ECX_OFF; break;
case UNW_X86_EAX: off = FREEBSD_UC_MCONTEXT_EAX_OFF; break;
case UNW_X86_TRAPNO: off = FREEBSD_UC_MCONTEXT_TRAPNO_OFF; break;
case UNW_X86_EIP: off = FREEBSD_UC_MCONTEXT_EIP_OFF; break;
case UNW_X86_CS: off = FREEBSD_UC_MCONTEXT_CS_OFF; break;
case UNW_X86_EFLAGS: off = FREEBSD_UC_MCONTEXT_EFLAGS_OFF; break;
case UNW_X86_SS: off = FREEBSD_UC_MCONTEXT_SS_OFF; break;
/* The following is probably not correct for all possible cases.
Somebody who understands this better should review this for
correctness. */
case UNW_X86_FCW: is_fpstate = 1; off = LINUX_FPSTATE_CW_OFF; break;
case UNW_X86_FSW: is_fpstate = 1; off = LINUX_FPSTATE_SW_OFF; break;
case UNW_X86_FTW: is_fpstate = 1; off = LINUX_FPSTATE_TAG_OFF; break;
case UNW_X86_FCS: is_fpstate = 1; off = LINUX_FPSTATE_CSSEL_OFF; break;
case UNW_X86_FIP: is_fpstate = 1; off = LINUX_FPSTATE_IPOFF_OFF; break;
case UNW_X86_FEA: is_fpstate = 1; off = LINUX_FPSTATE_DATAOFF_OFF; break;
case UNW_X86_FDS: is_fpstate = 1; off = LINUX_FPSTATE_DATASEL_OFF; break;
case UNW_X86_MXCSR: is_fpstate = 1; off = LINUX_FPSTATE_MXCSR_OFF; break;
/* stacked fp registers */
case UNW_X86_ST0: case UNW_X86_ST1: case UNW_X86_ST2: case UNW_X86_ST3:
case UNW_X86_ST4: case UNW_X86_ST5: case UNW_X86_ST6: case UNW_X86_ST7:
is_fpstate = 1;
off = LINUX_FPSTATE_ST0_OFF + 10*(reg - UNW_X86_ST0);
break;
/* SSE fp registers */
case UNW_X86_XMM0_lo: case UNW_X86_XMM0_hi:
case UNW_X86_XMM1_lo: case UNW_X86_XMM1_hi:
case UNW_X86_XMM2_lo: case UNW_X86_XMM2_hi:
case UNW_X86_XMM3_lo: case UNW_X86_XMM3_hi:
case UNW_X86_XMM4_lo: case UNW_X86_XMM4_hi:
case UNW_X86_XMM5_lo: case UNW_X86_XMM5_hi:
case UNW_X86_XMM6_lo: case UNW_X86_XMM6_hi:
case UNW_X86_XMM7_lo: case UNW_X86_XMM7_hi:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
break;
case UNW_X86_XMM0:
case UNW_X86_XMM1:
case UNW_X86_XMM2:
case UNW_X86_XMM3:
case UNW_X86_XMM4:
case UNW_X86_XMM5:
case UNW_X86_XMM6:
case UNW_X86_XMM7:
is_fpstate = 1;
off = LINUX_FPSTATE_XMM0_OFF + 16*(reg - UNW_X86_XMM0);
break;
case UNW_X86_FOP:
case UNW_X86_TSS:
case UNW_X86_LDT:
default:
return DWARF_REG_LOC (&c->dwarf, reg);
}
if (is_fpstate)
{
if ((ret = dwarf_get (&c->dwarf,
DWARF_MEM_LOC (&c->dwarf,
addr + LINUX_SC_FPSTATE_OFF),
&fpstate_addr)) < 0)
return DWARF_NULL_LOC;
if (!fpstate_addr)
return DWARF_NULL_LOC;
return DWARF_MEM_LOC (c, fpstate_addr + off);
}
else
return DWARF_MEM_LOC (c, addr + off);
}
#else
#error Port me
#endif
HIDDEN dwarf_loc_t
x86_scratch_loc (struct cursor *c, unw_regnum_t reg)
{
if (c->sigcontext_addr)
return get_scratch_loc (c, reg);
return x86_get_scratch_loc (c, reg);
else
return DWARF_REG_LOC (&c->dwarf, reg);
}

2
src/x86/unwind_i.h
View file

@ -51,10 +51,12 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#define x86_local_resume UNW_OBJ(local_resume)
#define x86_local_addr_space_init UNW_OBJ(local_addr_space_init)
#define x86_scratch_loc UNW_OBJ(scratch_loc)
#define x86_get_scratch_loc UNW_OBJ(get_scratch_loc)
extern void x86_local_addr_space_init (void);
extern int x86_local_resume (unw_addr_space_t as, unw_cursor_t *cursor,
void *arg);
extern dwarf_loc_t x86_scratch_loc (struct cursor *c, unw_regnum_t reg);
extern dwarf_loc_t x86_get_scratch_loc (struct cursor *c, unw_regnum_t reg);
#endif /* unwind_i_h */