mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-06-26 03:11:44 +02:00
(linux_scratch_loc): New function.
(tdep_access_reg): Rename from x86_access_reg() and fix up some things. (tdep_access_fpreg): Likewise. (Logical change 1.162)
This commit is contained in:
hp.com!davidm
parent
21595821bf
commit
21a24ca246
|
|
@ -1,5 +1,5 @@
|
|||
/* libunwind - a platform-independent unwind library
|
||||
Copyright (c) 2002-2003 Hewlett-Packard Development Company, L.P.
|
||||
Copyright (c) 2002-2004 Hewlett-Packard Development Company, L.P.
|
||||
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
||||
|
||||
This file is part of libunwind.
|
||||
|
|
@ -23,13 +23,119 @@ 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 "offsets.h"
|
||||
#include "unwind_i.h"
|
||||
|
||||
HIDDEN int
|
||||
x86_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
||||
int write)
|
||||
static inline dwarf_loc_t
|
||||
linux_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
||||
{
|
||||
struct dwarf_loc loc = DWARF_LOC (0, 0);
|
||||
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_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);
|
||||
}
|
||||
|
||||
HIDDEN dwarf_loc_t
|
||||
x86_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
||||
{
|
||||
if (c->sigcontext_addr)
|
||||
return linux_scratch_loc (c, reg);
|
||||
else
|
||||
return DWARF_REG_LOC (&c->dwarf, reg);
|
||||
}
|
||||
|
||||
HIDDEN int
|
||||
tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
||||
int write)
|
||||
{
|
||||
dwarf_loc_t loc = DWARF_NULL_LOC;
|
||||
|
||||
switch (reg)
|
||||
{
|
||||
|
|
@ -47,38 +153,35 @@ x86_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
return 0;
|
||||
|
||||
case UNW_X86_EAX: loc = c->dwarf.loc[EAX]; break;
|
||||
case UNW_X86_EBX: loc = c->dwarf.loc[EBX]; break;
|
||||
case UNW_X86_ECX: loc = c->dwarf.loc[ECX]; break;
|
||||
case UNW_X86_EDX: loc = c->dwarf.loc[EDX]; break;
|
||||
case UNW_X86_EBX: loc = c->dwarf.loc[EBX]; break;
|
||||
case UNW_X86_ESP: loc = c->dwarf.loc[ESP]; break;
|
||||
case UNW_X86_EBP: loc = c->dwarf.loc[EBP]; break;
|
||||
case UNW_X86_ESI: loc = c->dwarf.loc[ESI]; break;
|
||||
case UNW_X86_EDI: loc = c->dwarf.loc[EDI]; break;
|
||||
case UNW_X86_EBP: loc = c->dwarf.loc[EBP]; break;
|
||||
case UNW_X86_ESP: loc = c->dwarf.loc[ESP]; break;
|
||||
case UNW_X86_EFLAGS: loc = c->dwarf.loc[EFLAGS]; break;
|
||||
case UNW_X86_TRAPNO: loc = c->dwarf.loc[TRAPNO]; break;
|
||||
|
||||
#if 0
|
||||
UNW_X86_EFLAGS
|
||||
UNW_X86_TRAPNO
|
||||
|
||||
UNW_X86_FCW
|
||||
UNW_X86_FSW
|
||||
UNW_X86_FTW
|
||||
UNW_X86_FOP
|
||||
UNW_X86_FCS
|
||||
UNW_X86_FIP
|
||||
UNW_X86_FEA
|
||||
UNW_X86_FDS
|
||||
|
||||
UNW_X86_MXCSR
|
||||
|
||||
UNW_X86_GS
|
||||
UNW_X86_FS
|
||||
UNW_X86_ES
|
||||
UNW_X86_DS
|
||||
UNW_X86_SS
|
||||
UNW_X86_CS
|
||||
UNW_X86_TSS
|
||||
UNW_X86_LDT
|
||||
#endif
|
||||
case UNW_X86_FCW:
|
||||
case UNW_X86_FSW:
|
||||
case UNW_X86_FTW:
|
||||
case UNW_X86_FOP:
|
||||
case UNW_X86_FCS:
|
||||
case UNW_X86_FIP:
|
||||
case UNW_X86_FEA:
|
||||
case UNW_X86_FDS:
|
||||
case UNW_X86_MXCSR:
|
||||
case UNW_X86_GS:
|
||||
case UNW_X86_FS:
|
||||
case UNW_X86_ES:
|
||||
case UNW_X86_DS:
|
||||
case UNW_X86_SS:
|
||||
case UNW_X86_CS:
|
||||
case UNW_X86_TSS:
|
||||
case UNW_X86_LDT:
|
||||
loc = x86_scratch_loc (c, reg);
|
||||
break;
|
||||
|
||||
default:
|
||||
Debug (1, "bad register number %u\n", reg);
|
||||
|
|
@ -92,35 +195,52 @@ x86_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
}
|
||||
|
||||
HIDDEN int
|
||||
x86_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
|
||||
int write)
|
||||
tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
|
||||
int write)
|
||||
{
|
||||
#if 0
|
||||
/* 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_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 */
|
||||
#endif
|
||||
return -UNW_EINVAL;
|
||||
struct dwarf_loc loc = DWARF_NULL_LOC;
|
||||
|
||||
switch (reg)
|
||||
{
|
||||
case UNW_X86_ST0:
|
||||
loc = c->dwarf.loc[ST0];
|
||||
break;
|
||||
|
||||
/* stacked fp registers */
|
||||
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:
|
||||
/* 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:
|
||||
loc = x86_scratch_loc (c, reg);
|
||||
break;
|
||||
|
||||
default:
|
||||
Debug (1, "bad register number %u\n", reg);
|
||||
return -UNW_EBADREG;
|
||||
}
|
||||
|
||||
if (write)
|
||||
return dwarf_putfp (&c->dwarf, loc, *valp);
|
||||
else
|
||||
return dwarf_getfp (&c->dwarf, loc, valp);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue