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https://github.com/tobast/libunwind-eh_elf.git
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(ia64_scratch_loc): Use c->as->abi to select appropriate behavior. Implement
support for HP-UX. (access_nat): Check for uc-location and pass it on to ia64_put()/ia64_get() if it is. Handle NaT-bit-saved-in-scratch-register only for Linux. (ia64_access_reg): Change dprintf() into debug() statement. (ia64_access_fpreg): Move fph-partition initialization code to ia64_scratch_loc(). Change dprintf() into debug() statement. (Logical change 1.87)
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8b7c7e322a
commit
bd28baa280
1 changed files with 77 additions and 63 deletions
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@ -37,35 +37,76 @@ ia64_scratch_loc (struct cursor *c, unw_regnum_t reg)
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if (sc_addr)
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{
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switch (reg)
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switch (c->as->abi)
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{
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case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
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case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
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sc_addr += LINUX_SC_NAT_OFF;
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break;
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#if !defined(UNW_LOCAL_ONLY) || defined(__linux)
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case ABI_LINUX:
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{
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unw_word_t flags, tmp_addr;
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int i, ret;
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case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3:
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case UNW_IA64_GR + 8 ... UNW_IA64_GR + 31:
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sc_addr += LINUX_SC_GR_OFF + 8*reg;
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break;
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switch (reg)
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{
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case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
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case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
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sc_addr += LINUX_SC_NAT_OFF;
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break;
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case UNW_IA64_FR + 6 ... UNW_IA64_FR + 15:
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sc_addr += LINUX_SC_FR_OFF + 16*(reg - UNW_IA64_FR);
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return IA64_LOC_ADDR (sc_addr, IA64_LOC_TYPE_FP);
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case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3:
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case UNW_IA64_GR + 8 ... UNW_IA64_GR + 31:
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sc_addr += LINUX_SC_GR_OFF + 8*reg;
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break;
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case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127:
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sc_addr += LINUX_SC_FR_OFF + 16*(reg - UNW_IA64_FR);
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return IA64_LOC_ADDR (sc_addr, IA64_LOC_TYPE_FP);
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case UNW_IA64_FR + 6 ... UNW_IA64_FR + 15:
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sc_addr += LINUX_SC_FR_OFF + 16*(reg - UNW_IA64_FR);
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return IA64_LOC_ADDR (sc_addr, IA64_LOC_TYPE_FP);
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case UNW_IA64_BR + 0: sc_addr += LINUX_SC_BR_OFF + 0; break;
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case UNW_IA64_BR + 6: sc_addr += LINUX_SC_BR_OFF + 6*8; break;
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case UNW_IA64_BR + 7: sc_addr += LINUX_SC_BR_OFF + 7*8; break;
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case UNW_IA64_AR_RSC: sc_addr += LINUX_SC_AR_RSC_OFF; break;
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case UNW_IA64_AR_CSD: sc_addr += LINUX_SC_AR_CSD_OFF; break;
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case UNW_IA64_AR_26: sc_addr += LINUX_SC_AR_26_OFF; break;
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case UNW_IA64_AR_CCV: sc_addr += LINUX_SC_AR_CCV; break;
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case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127:
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if ((ret = ia64_get (c, IA64_LOC_ADDR (sc_addr
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+ LINUX_SC_FLAGS_OFF,
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0), &flags)) < 0)
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return IA64_NULL_LOC;
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if (!(flags & IA64_SC_FLAG_FPH_VALID))
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{
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/* initialize fph partition: */
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tmp_addr = sc_addr + LINUX_SC_FR_OFF + 32*16;
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for (i = 32; i < 128; ++i, tmp_addr += 16)
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if ((ret = ia64_putfp (c, IA64_LOC_ADDR (tmp_addr, 0),
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unw.f0)) < 0)
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return IA64_NULL_LOC;
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/* mark fph partition as valid: */
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if ((ret = ia64_put (c,
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IA64_LOC_ADDR (sc_addr
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+ LINUX_SC_FLAGS_OFF,
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0),
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flags | IA64_SC_FLAG_FPH_VALID)) < 0)
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return IA64_NULL_LOC;
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}
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sc_addr += LINUX_SC_FR_OFF + 16*(reg - UNW_IA64_FR);
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return IA64_LOC_ADDR (sc_addr, IA64_LOC_TYPE_FP);
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case UNW_IA64_BR + 0: sc_addr += LINUX_SC_BR_OFF + 0; break;
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case UNW_IA64_BR + 6: sc_addr += LINUX_SC_BR_OFF + 6*8; break;
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case UNW_IA64_BR + 7: sc_addr += LINUX_SC_BR_OFF + 7*8; break;
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case UNW_IA64_AR_RSC: sc_addr += LINUX_SC_AR_RSC_OFF; break;
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case UNW_IA64_AR_CSD: sc_addr += LINUX_SC_AR_CSD_OFF; break;
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case UNW_IA64_AR_26: sc_addr += LINUX_SC_AR_26_OFF; break;
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case UNW_IA64_AR_CCV: sc_addr += LINUX_SC_AR_CCV; break;
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}
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return IA64_LOC_ADDR (sc_addr, 0);
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}
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#endif
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#if !defined(UNW_LOCAL_ONLY) || defined(__hpux)
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case ABI_HPUX:
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return IA64_LOC_UC_REG (reg, sc_addr);
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#endif
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default:
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return IA64_NULL_LOC;
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}
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return IA64_LOC_ADDR (sc_addr, 0);
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}
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else
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return IA64_REG_LOC (c, reg);
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@ -104,6 +145,14 @@ access_nat (struct cursor *c, ia64_loc_t loc, ia64_loc_t reg_loc,
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unw_fpreg_t tmp;
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int ret, reg;
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if (IA64_IS_UC_LOC (reg_loc))
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{
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if (write)
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return ia64_put (c, loc, *valp);
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else
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return ia64_get (c, loc, valp);
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}
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if (IA64_IS_FP_LOC (reg_loc))
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{
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/* NaT bit is saved as a NaTVal. This happens when a general
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@ -206,13 +255,15 @@ access_nat (struct cursor *c, ia64_loc_t loc, ia64_loc_t reg_loc,
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else
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{
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/* NaT bit is saved in a scratch register. */
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#if !defined(UNW_LOCAL_ONLY) || defined(__linux)
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sc_addr = c->sigcontext_addr;
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if (sc_addr)
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if (sc_addr && c->as->abi == ABI_LINUX)
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{
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nat_loc = IA64_LOC_ADDR (sc_addr + LINUX_SC_NAT_OFF, 0);
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mask = (unw_word_t) 1 << reg;
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}
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else
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#endif
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{
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if (write)
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return ia64_put (c, loc, *valp);
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@ -418,7 +469,7 @@ ia64_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
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break;
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default:
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dprintf ("%s: bad register number %d\n", __FUNCTION__, reg);
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debug (1, "%s: bad register number %d\n", __FUNCTION__, reg);
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return -UNW_EBADREG;
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}
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@ -436,9 +487,7 @@ HIDDEN int
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ia64_access_fpreg (struct cursor *c, int reg, unw_fpreg_t *valp,
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int write)
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{
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unw_word_t flags, tmp_addr, sc_addr;
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ia64_loc_t loc;
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int ret, i;
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switch (reg)
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{
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@ -471,47 +520,12 @@ ia64_access_fpreg (struct cursor *c, int reg, unw_fpreg_t *valp,
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break;
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case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127:
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sc_addr = c->sigcontext_addr;
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if (sc_addr)
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{
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ret = ia64_get (c, IA64_LOC_ADDR (sc_addr + LINUX_SC_FLAGS_OFF, 0),
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&flags);
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if (ret < 0)
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return ret;
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if (!(flags & IA64_SC_FLAG_FPH_VALID))
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{
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if (write)
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{
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/* initialize fph partition: */
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tmp_addr = sc_addr + LINUX_SC_FR_OFF + 32*16;
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for (i = 32; i < 128; ++i, tmp_addr += 16)
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{
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ret = ia64_putfp (c, IA64_LOC_ADDR (tmp_addr, 0),
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unw.f0);
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if (ret < 0)
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return ret;
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}
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/* mark fph partition as valid: */
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ret = ia64_put (c, IA64_LOC_ADDR (sc_addr
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+ LINUX_SC_FLAGS_OFF, 0),
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flags | IA64_SC_FLAG_FPH_VALID);
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if (ret < 0)
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return ret;
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}
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else
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{
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*valp = unw.f0;
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return 0;
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}
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}
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}
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reg = rotate_fr (c, reg - UNW_IA64_FR) + UNW_IA64_FR;
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loc = ia64_scratch_loc (c, reg);
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break;
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default:
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dprintf ("%s: bad register number %d\n", __FUNCTION__, reg);
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debug (1, "%s: bad register number %d\n", __FUNCTION__, reg);
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return -UNW_EBADREG;
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}
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