mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-23 07:57:38 +01:00
(linux_scratch_loc): Add "nat_bitnr"-pointer argument.
Handle NaT-bit registers by returning not just the NaT-word address, but also the NaT-bit number. (hpux_scratch_loc): Add "nat_bitnr"-pointer argument. (ia64_scratch_loc): Likewise. (access_nat): Add "nat_bitnr" argument. Rename "loc" to "nat_loc". Greatly simplify now that we have the NaT-word and the NaT bit-number readily available. (access_reg): Pass NaT-bit number to access_nat(). Handle scratch NaT-bit registers in a more generic fashion, now that we can. Adjust all calls to ia64_scratch_loc() for third argument. (Logical change 1.181)
This commit is contained in:
mostang.com!davidm
parent
9316bbb8f4
commit
50488aece3
1 changed files with 120 additions and 167 deletions
|
|
@ -32,20 +32,22 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|||
#include "unwind_i.h"
|
||||
|
||||
static inline ia64_loc_t
|
||||
linux_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
||||
linux_scratch_loc (struct cursor *c, unw_regnum_t reg, uint8_t *nat_bitnr)
|
||||
{
|
||||
#if !defined(UNW_LOCAL_ONLY) || defined(__linux)
|
||||
unw_word_t addr = c->sigcontext_addr, flags, tmp_addr;
|
||||
int i;
|
||||
|
||||
switch (c->last_abi_marker)
|
||||
if (c->last_abi_marker == ABI_MARKER_LINUX_SIGTRAMP
|
||||
|| c->last_abi_marker == ABI_MARKER_OLD_LINUX_SIGTRAMP)
|
||||
{
|
||||
case ABI_MARKER_OLD_LINUX_SIGTRAMP:
|
||||
case ABI_MARKER_LINUX_SIGTRAMP:
|
||||
switch (reg)
|
||||
{
|
||||
case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
|
||||
case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
|
||||
/* Linux sigcontext contains the NaT bit of scratch register
|
||||
N in bit position N of the sc_nat member. */
|
||||
*nat_bitnr = (reg - UNW_IA64_NAT);
|
||||
addr += LINUX_SC_NAT_OFF;
|
||||
break;
|
||||
|
||||
|
|
@ -91,82 +93,98 @@ linux_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
|||
return IA64_REG_LOC (c, reg);
|
||||
}
|
||||
return IA64_LOC_ADDR (addr, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
int is_nat = 0;
|
||||
|
||||
case ABI_MARKER_LINUX_INTERRUPT:
|
||||
switch (reg)
|
||||
if ((unsigned) (reg - UNW_IA64_NAT) < 128)
|
||||
{
|
||||
case UNW_IA64_BR + 6 ... UNW_IA64_BR + 7:
|
||||
addr += LINUX_PT_B6_OFF + 8 * (reg - (UNW_IA64_BR + 6));
|
||||
break;
|
||||
is_nat = 1;
|
||||
reg -= (UNW_IA64_NAT - UNW_IA64_GR);
|
||||
}
|
||||
if (c->last_abi_marker == ABI_MARKER_LINUX_INTERRUPT)
|
||||
{
|
||||
switch (reg)
|
||||
{
|
||||
case UNW_IA64_BR + 6 ... UNW_IA64_BR + 7:
|
||||
addr += LINUX_PT_B6_OFF + 8 * (reg - (UNW_IA64_BR + 6));
|
||||
break;
|
||||
|
||||
case UNW_IA64_AR_CSD: addr += LINUX_PT_CSD_OFF; break;
|
||||
case UNW_IA64_AR_SSD: addr += LINUX_PT_SSD_OFF; break;
|
||||
case UNW_IA64_AR_CSD: addr += LINUX_PT_CSD_OFF; break;
|
||||
case UNW_IA64_AR_SSD: addr += LINUX_PT_SSD_OFF; break;
|
||||
|
||||
case UNW_IA64_GR + 8 ... UNW_IA64_GR + 11:
|
||||
addr += LINUX_PT_R8_OFF + 8 * (reg - (UNW_IA64_GR + 8));
|
||||
break;
|
||||
case UNW_IA64_GR + 8 ... UNW_IA64_GR + 11:
|
||||
addr += LINUX_PT_R8_OFF + 8 * (reg - (UNW_IA64_GR + 8));
|
||||
break;
|
||||
|
||||
case UNW_IA64_AR_RSC: addr += LINUX_PT_RSC_OFF; break;
|
||||
case UNW_IA64_BR + 0: addr += LINUX_PT_B0_OFF; break;
|
||||
case UNW_IA64_GR + 1: addr += LINUX_PT_R1_OFF; break;
|
||||
case UNW_IA64_GR + 2: addr += LINUX_PT_R2_OFF; break;
|
||||
case UNW_IA64_GR + 3: addr += LINUX_PT_R3_OFF; break;
|
||||
case UNW_IA64_AR_RSC: addr += LINUX_PT_RSC_OFF; break;
|
||||
case UNW_IA64_BR + 0: addr += LINUX_PT_B0_OFF; break;
|
||||
case UNW_IA64_GR + 1: addr += LINUX_PT_R1_OFF; break;
|
||||
case UNW_IA64_GR + 2: addr += LINUX_PT_R2_OFF; break;
|
||||
case UNW_IA64_GR + 3: addr += LINUX_PT_R3_OFF; break;
|
||||
|
||||
case UNW_IA64_GR + 16 ... UNW_IA64_GR + 31:
|
||||
addr += LINUX_PT_R16_OFF + 8 * (reg - (UNW_IA64_GR + 16));
|
||||
break;
|
||||
case UNW_IA64_GR + 16 ... UNW_IA64_GR + 31:
|
||||
addr += LINUX_PT_R16_OFF + 8 * (reg - (UNW_IA64_GR + 16));
|
||||
break;
|
||||
|
||||
case UNW_IA64_AR_CCV: addr += LINUX_PT_CCV_OFF; break;
|
||||
case UNW_IA64_AR_CCV: addr += LINUX_PT_CCV_OFF; break;
|
||||
|
||||
case UNW_IA64_FR + 6 ... UNW_IA64_FR + 11:
|
||||
addr += LINUX_PT_F6_OFF + 16 * (reg - (UNW_IA64_FR + 6));
|
||||
return IA64_LOC_ADDR (addr, IA64_LOC_TYPE_FP);
|
||||
case UNW_IA64_FR + 6 ... UNW_IA64_FR + 11:
|
||||
addr += LINUX_PT_F6_OFF + 16 * (reg - (UNW_IA64_FR + 6));
|
||||
return IA64_LOC_ADDR (addr, IA64_LOC_TYPE_FP);
|
||||
|
||||
default:
|
||||
return IA64_REG_LOC (c, reg);
|
||||
default:
|
||||
return IA64_REG_LOC (c, reg);
|
||||
}
|
||||
}
|
||||
else if (c->last_abi_marker == ABI_MARKER_OLD_LINUX_INTERRUPT)
|
||||
{
|
||||
switch (reg)
|
||||
{
|
||||
case UNW_IA64_GR + 1 ... UNW_IA64_GR + 3:
|
||||
addr += LINUX_OLD_PT_R1_OFF + 8 * (reg - (UNW_IA64_GR + 1));
|
||||
break;
|
||||
|
||||
case UNW_IA64_GR + 8 ... UNW_IA64_GR + 11:
|
||||
addr += LINUX_OLD_PT_R8_OFF + 8 * (reg - (UNW_IA64_GR + 8));
|
||||
break;
|
||||
|
||||
case UNW_IA64_GR + 16 ... UNW_IA64_GR + 31:
|
||||
addr += LINUX_OLD_PT_R16_OFF + 8 * (reg - (UNW_IA64_GR + 16));
|
||||
break;
|
||||
|
||||
case UNW_IA64_FR + 6 ... UNW_IA64_FR + 9:
|
||||
addr += LINUX_OLD_PT_F6_OFF + 16 * (reg - (UNW_IA64_FR + 6));
|
||||
return IA64_LOC_ADDR (addr, IA64_LOC_TYPE_FP);
|
||||
|
||||
case UNW_IA64_BR + 0: addr += LINUX_OLD_PT_B0_OFF; break;
|
||||
case UNW_IA64_BR + 6: addr += LINUX_OLD_PT_B6_OFF; break;
|
||||
case UNW_IA64_BR + 7: addr += LINUX_OLD_PT_B7_OFF; break;
|
||||
|
||||
case UNW_IA64_AR_RSC: addr += LINUX_OLD_PT_RSC_OFF; break;
|
||||
case UNW_IA64_AR_CCV: addr += LINUX_OLD_PT_CCV_OFF; break;
|
||||
|
||||
default:
|
||||
return IA64_REG_LOC (c, reg);
|
||||
}
|
||||
}
|
||||
if (is_nat)
|
||||
{
|
||||
/* For Linux pt-regs structure, bit number is determined by
|
||||
the UNaT slot number (as determined by st8.spill) and the
|
||||
bits are saved wherever the (primary) UNaT was saved. */
|
||||
*nat_bitnr = ia64_unat_slot_num (addr);
|
||||
return c->loc[IA64_REG_PRI_UNAT_MEM];
|
||||
}
|
||||
return IA64_LOC_ADDR (addr, 0);
|
||||
|
||||
case ABI_MARKER_OLD_LINUX_INTERRUPT:
|
||||
switch (reg)
|
||||
{
|
||||
case UNW_IA64_GR + 1 ... UNW_IA64_GR + 3:
|
||||
addr += LINUX_OLD_PT_R1_OFF + 8 * (reg - (UNW_IA64_GR + 1));
|
||||
break;
|
||||
|
||||
case UNW_IA64_GR + 8 ... UNW_IA64_GR + 11:
|
||||
addr += LINUX_OLD_PT_R8_OFF + 8 * (reg - (UNW_IA64_GR + 8));
|
||||
break;
|
||||
|
||||
case UNW_IA64_GR + 16 ... UNW_IA64_GR + 31:
|
||||
addr += LINUX_OLD_PT_R16_OFF + 8 * (reg - (UNW_IA64_GR + 16));
|
||||
break;
|
||||
|
||||
case UNW_IA64_FR + 6 ... UNW_IA64_FR + 9:
|
||||
addr += LINUX_OLD_PT_F6_OFF + 16 * (reg - (UNW_IA64_FR + 6));
|
||||
return IA64_LOC_ADDR (addr, IA64_LOC_TYPE_FP);
|
||||
|
||||
case UNW_IA64_BR + 0: addr += LINUX_OLD_PT_B0_OFF; break;
|
||||
case UNW_IA64_BR + 6: addr += LINUX_OLD_PT_B6_OFF; break;
|
||||
case UNW_IA64_BR + 7: addr += LINUX_OLD_PT_B7_OFF; break;
|
||||
|
||||
case UNW_IA64_AR_RSC: addr += LINUX_OLD_PT_RSC_OFF; break;
|
||||
case UNW_IA64_AR_CCV: addr += LINUX_OLD_PT_CCV_OFF; break;
|
||||
|
||||
default:
|
||||
return IA64_REG_LOC (c, reg);
|
||||
}
|
||||
return IA64_LOC_ADDR (addr, 0);
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
return IA64_NULL_LOC;
|
||||
}
|
||||
|
||||
static inline ia64_loc_t
|
||||
hpux_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
||||
hpux_scratch_loc (struct cursor *c, unw_regnum_t reg, uint8_t *nat_bitnr)
|
||||
{
|
||||
#if !defined(UNW_LOCAL_ONLY) || defined(__hpux)
|
||||
return IA64_LOC_UC_REG (reg, c->sigcontext_addr);
|
||||
|
|
@ -176,20 +194,17 @@ hpux_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
|||
}
|
||||
|
||||
HIDDEN ia64_loc_t
|
||||
ia64_scratch_loc (struct cursor *c, unw_regnum_t reg)
|
||||
ia64_scratch_loc (struct cursor *c, unw_regnum_t reg, uint8_t *nat_bitnr)
|
||||
{
|
||||
if (c->sigcontext_addr)
|
||||
switch (c->as->abi)
|
||||
{
|
||||
case ABI_LINUX:
|
||||
return linux_scratch_loc (c, reg);
|
||||
|
||||
case ABI_HPUX:
|
||||
return hpux_scratch_loc (c, reg);
|
||||
|
||||
default:
|
||||
{
|
||||
if (c->as->abi == ABI_LINUX)
|
||||
return linux_scratch_loc (c, reg, nat_bitnr);
|
||||
else if (c->as->abi == ABI_HPUX)
|
||||
return hpux_scratch_loc (c, reg, nat_bitnr);
|
||||
else
|
||||
return IA64_NULL_LOC;
|
||||
}
|
||||
}
|
||||
else
|
||||
return IA64_REG_LOC (c, reg);
|
||||
}
|
||||
|
|
@ -219,20 +234,20 @@ update_nat (struct cursor *c, ia64_loc_t nat_loc, unw_word_t mask,
|
|||
}
|
||||
|
||||
static int
|
||||
access_nat (struct cursor *c, ia64_loc_t loc, ia64_loc_t reg_loc,
|
||||
access_nat (struct cursor *c,
|
||||
ia64_loc_t nat_loc, ia64_loc_t reg_loc, uint8_t nat_bitnr,
|
||||
unw_word_t *valp, int write)
|
||||
{
|
||||
unw_word_t mask = 0;
|
||||
ia64_loc_t nat_loc;
|
||||
unw_fpreg_t tmp;
|
||||
int ret, reg;
|
||||
int ret;
|
||||
|
||||
if (IA64_IS_UC_LOC (reg_loc))
|
||||
{
|
||||
if (write)
|
||||
return ia64_put (c, loc, *valp);
|
||||
return ia64_put (c, nat_loc, *valp);
|
||||
else
|
||||
return ia64_get (c, loc, valp);
|
||||
return ia64_get (c, nat_loc, valp);
|
||||
}
|
||||
|
||||
if (IA64_IS_FP_LOC (reg_loc))
|
||||
|
|
@ -280,89 +295,24 @@ access_nat (struct cursor *c, ia64_loc_t loc, ia64_loc_t reg_loc,
|
|||
return ret;
|
||||
}
|
||||
|
||||
if (IA64_IS_MEMSTK_NAT (loc))
|
||||
if (IA64_IS_NULL_LOC (nat_loc))
|
||||
{
|
||||
nat_loc = loc;
|
||||
if (IA64_IS_NULL_LOC (nat_loc))
|
||||
/* There was no primary UNaT, implying that the NaT bits are
|
||||
still in ar.unat. This can happen for leaf-routines. */
|
||||
nat_loc = c->loc[IA64_REG_UNAT];
|
||||
assert (!IA64_IS_REG_LOC (reg_loc));
|
||||
mask = (unw_word_t) 1 << ia64_rse_slot_num (IA64_GET_ADDR (reg_loc));
|
||||
}
|
||||
else
|
||||
{
|
||||
reg = IA64_GET_REG (loc);
|
||||
assert (reg >= 0 && reg < 128);
|
||||
if (!reg)
|
||||
/* NaT bit is not saved. This happens if a general register is
|
||||
saved to a branch register. Since the NaT bit gets lost, we
|
||||
need to drop it here, too. Note that if the NaT bit had been
|
||||
set when the save occurred, it would have caused a NaT
|
||||
consumption fault. */
|
||||
if (write)
|
||||
{
|
||||
/* NaT bit is not saved. This happens if a general register
|
||||
is saved to a branch register. Since the NaT bit gets
|
||||
lost, we need to drop it here, too. Note that if the NaT
|
||||
bit had been set when the save occurred, it would have
|
||||
caused a NaT consumption fault. */
|
||||
if (write)
|
||||
{
|
||||
if (*valp)
|
||||
return -UNW_EBADREG; /* can't set NaT bit */
|
||||
}
|
||||
else
|
||||
*valp = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (reg >= 4 && reg <= 7)
|
||||
{
|
||||
/* NaT bit is saved in a NaT register. This happens when
|
||||
one general register is saved to another general
|
||||
register. */
|
||||
#ifdef UNW_LOCAL_ONLY
|
||||
ucontext_t *uc = c->as_arg;
|
||||
mask = ((unw_word_t) 1) << reg;
|
||||
nat_loc = IA64_LOC_ADDR ((unw_word_t) &uc->uc_mcontext.sc_nat, 0);
|
||||
#else
|
||||
if (write)
|
||||
ret = ia64_put (c, IA64_REG_LOC (c, UNW_IA64_NAT + reg), *valp);
|
||||
else
|
||||
ret = ia64_get (c, IA64_REG_LOC (c, UNW_IA64_NAT + reg), valp);
|
||||
return ret;
|
||||
#endif
|
||||
}
|
||||
else if (reg >= 32)
|
||||
{
|
||||
struct rbs_area *rbs;
|
||||
unw_word_t reg_addr = IA64_GET_ADDR (reg_loc);
|
||||
|
||||
/* NaT bit is saved in a stacked register. */
|
||||
assert (!IA64_IS_REG_LOC (reg_loc));
|
||||
|
||||
rbs = rbs_find (c, reg_addr);
|
||||
if (!rbs)
|
||||
return -UNW_EBADREG;
|
||||
nat_loc = rbs_get_rnat_loc (rbs, reg_addr);
|
||||
mask = (unw_word_t) 1 << ia64_rse_slot_num (reg_addr);
|
||||
if (*valp)
|
||||
return -UNW_EBADREG; /* can't set NaT bit */
|
||||
}
|
||||
else
|
||||
{
|
||||
/* NaT bit is saved in a scratch register. */
|
||||
#if !defined(UNW_LOCAL_ONLY) || defined(__linux)
|
||||
if (c->last_abi_marker == ABI_MARKER_LINUX_SIGTRAMP
|
||||
|| c->last_abi_marker == ABI_MARKER_OLD_LINUX_SIGTRAMP)
|
||||
{
|
||||
nat_loc = IA64_LOC_ADDR (c->sigcontext_addr + LINUX_SC_NAT_OFF,
|
||||
0);
|
||||
mask = (unw_word_t) 1 << reg;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
if (write)
|
||||
return ia64_put (c, loc, *valp);
|
||||
else
|
||||
return ia64_get (c, loc, valp);
|
||||
}
|
||||
}
|
||||
*valp = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
mask = (unw_word_t) 1 << nat_bitnr;
|
||||
return update_nat (c, nat_loc, mask, valp, write);
|
||||
}
|
||||
|
||||
|
|
@ -373,6 +323,7 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
ia64_loc_t loc, reg_loc, nat_loc;
|
||||
unw_word_t nat, mask, pr;
|
||||
int ret, readonly = 0;
|
||||
uint8_t nat_bitnr;
|
||||
|
||||
switch (reg)
|
||||
{
|
||||
|
|
@ -409,7 +360,8 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
case UNW_IA64_NAT + 4 ... UNW_IA64_NAT + 7:
|
||||
loc = c->loc[IA64_REG_NAT4 + (reg - (UNW_IA64_NAT + 4))];
|
||||
reg_loc = c->loc[IA64_REG_R4 + (reg - (UNW_IA64_NAT + 4))];
|
||||
return access_nat (c, loc, reg_loc, valp, write);
|
||||
nat_bitnr = c->nat_bitnr[reg - (UNW_IA64_NAT + 4)];
|
||||
return access_nat (c, loc, reg_loc, nat_bitnr, valp, write);
|
||||
|
||||
case UNW_IA64_AR_BSP: loc = c->loc[IA64_REG_BSP]; break;
|
||||
case UNW_IA64_AR_BSPSTORE: loc = c->loc[IA64_REG_BSPSTORE]; break;
|
||||
|
|
@ -506,13 +458,14 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
|
||||
case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
|
||||
case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
|
||||
loc = ia64_scratch_loc (c, reg);
|
||||
if (c->sigcontext_addr)
|
||||
loc = ia64_scratch_loc (c, reg, &nat_bitnr);
|
||||
if (!(IA64_IS_REG_LOC (loc) || IA64_IS_UC_LOC (loc)
|
||||
|| IA64_IS_FP_LOC (loc)))
|
||||
{
|
||||
mask = (unw_word_t) 1 << (reg - UNW_IA64_NAT);
|
||||
/* We're dealing with a NaT bit stored in memory. */
|
||||
mask = (unw_word_t) 1 << nat_bitnr;
|
||||
|
||||
ret = ia64_get (c, loc, &nat);
|
||||
if (ret < 0)
|
||||
if ((ret = ia64_get (c, loc, &nat)) < 0)
|
||||
return ret;
|
||||
|
||||
if (write)
|
||||
|
|
@ -543,7 +496,7 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
return 0;
|
||||
}
|
||||
else
|
||||
loc = ia64_scratch_loc (c, reg);
|
||||
loc = ia64_scratch_loc (c, reg, NULL);
|
||||
break;
|
||||
|
||||
case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3:
|
||||
|
|
@ -556,7 +509,7 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
|||
case UNW_IA64_AR_CSD:
|
||||
case UNW_IA64_AR_SSD:
|
||||
case UNW_IA64_AR_CCV:
|
||||
loc = ia64_scratch_loc (c, reg);
|
||||
loc = ia64_scratch_loc (c, reg, NULL);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
|
@ -607,12 +560,12 @@ tdep_access_fpreg (struct cursor *c, int reg, unw_fpreg_t *valp,
|
|||
break;
|
||||
|
||||
case UNW_IA64_FR + 6 ... UNW_IA64_FR + 15:
|
||||
loc = ia64_scratch_loc (c, reg);
|
||||
loc = ia64_scratch_loc (c, reg, NULL);
|
||||
break;
|
||||
|
||||
case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127:
|
||||
reg = rotate_fr (c, reg - UNW_IA64_FR) + UNW_IA64_FR;
|
||||
loc = ia64_scratch_loc (c, reg);
|
||||
loc = ia64_scratch_loc (c, reg, NULL);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
|
|
|||
Loading…
Reference in a new issue