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(_UPT_access_reg): When ptrace() returns an error, branch to common

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"badreg" error handler.

(Logical change 1.81)
This commit is contained in:
hp.com!davidm 2003-04-21 23:14:14 +00:00
parent de5b16e4a8
commit 060850b2c7
1 changed files with 18 additions and 14 deletions
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32
src/_UPT_access_reg.c
View file

@ -58,7 +58,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
#else
nat_bits = ptrace (PTRACE_PEEKUSER, pid, PT_NAT_BITS, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
if (write)
@ -73,7 +73,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
ptrace (PTRACE_POKEUSER, pid, PT_NAT_BITS, nat_bits);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
}
goto out;
@ -83,7 +83,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
{
case UNW_IA64_GR + 0:
if (write)
return -UNW_EBADREG;
goto badreg;
*val = 0;
return 0;
@ -98,7 +98,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
psr = ptrace (PTRACE_PEEKUSER, pid, PT_CR_IPSR, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
if (write)
{
@ -111,7 +111,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
ptrace (PTRACE_POKEUSER, pid, PT_CR_IIP, ip);
ptrace (PTRACE_POKEUSER, pid, PT_CR_IPSR, psr);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
}
else
@ -122,7 +122,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
ip = ptrace (PTRACE_PEEKUSER, pid, PT_CR_IIP, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
*val = ip + ((psr >> 41) & 0x3);
}
@ -146,7 +146,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
cfm = ptrace (PTRACE_PEEKUSER, pid, PT_CFM, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
sof = (cfm & 0x7f);
@ -159,7 +159,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
ptrace (PTRACE_POKEUSER, pid, PT_AR_BSP, bsp);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
}
else
@ -170,7 +170,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
bsp = ptrace (PTRACE_PEEKUSER, pid, PT_AR_BSP, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
*val = ia64_rse_skip_regs (bsp, -sof);
}
@ -192,7 +192,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
cfm = ptrace (PTRACE_PEEKUSER, pid, PT_CFM, 0);
#endif
if (errno)
return -UNW_EBADREG;
goto badreg;
old_sof = (cfm & 0x7f);
new_sof = (*val & 0x7f);
if (old_sof != new_sof)
@ -204,7 +204,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
ptrace (PTRACE_POKEUSER, pid, PT_AR_BSP, 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
}
#ifdef HAVE_TTRACE
@ -213,7 +213,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
errno = 0;
ptrace (PTRACE_POKEUSER, pid, PT_CFM, *val);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
goto out;
}
@ -222,7 +222,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
#endif
if ((unsigned) reg >= sizeof (_UPT_reg_offset) / sizeof (_UPT_reg_offset[0]))
return -UNW_EBADREG;
goto badreg;
#ifdef HAVE_TTRACE
# warning No support for ttrace() yet.
@ -233,7 +233,7 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
else
*val = ptrace (PTRACE_PEEKUSER, pid, _UPT_reg_offset[reg], 0);
if (errno)
return -UNW_EBADREG;
goto badreg;
#endif
out:
@ -242,4 +242,8 @@ _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val,
debug (100, "%s: %s -> %lx\n", __FUNCTION__, unw_regname (reg), *val);
#endif
return 0;
badreg:
debug (1, "%s: bad register number %u\n", __FUNCTION__, reg);
return -UNW_EBADREG;
}