diff options
Diffstat (limited to 'gdb/i386-tdep.c')
| -rw-r--r-- | gdb/i386-tdep.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c index eab8e44..6330ceb 100644 --- a/gdb/i386-tdep.c +++ b/gdb/i386-tdep.c @@ -2541,18 +2541,21 @@ i386_mmx_regnum_to_fp_regnum (struct regcache *regcache, int regnum) return (I387_ST0_REGNUM (tdep) + fpreg); } -void +enum register_status i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int regnum, gdb_byte *buf) { gdb_byte raw_buf[MAX_REGISTER_SIZE]; + enum register_status status; if (i386_mmx_regnum_p (gdbarch, regnum)) { int fpnum = i386_mmx_regnum_to_fp_regnum (regcache, regnum); /* Extract (always little endian). */ - regcache_raw_read (regcache, fpnum, raw_buf); + status = regcache_raw_read (regcache, fpnum, raw_buf); + if (status != REG_VALID) + return status; memcpy (buf, raw_buf, register_size (gdbarch, regnum)); } else @@ -2564,14 +2567,18 @@ i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, regnum -= tdep->ymm0_regnum; /* Extract (always little endian). Read lower 128bits. */ - regcache_raw_read (regcache, - I387_XMM0_REGNUM (tdep) + regnum, - raw_buf); + status = regcache_raw_read (regcache, + I387_XMM0_REGNUM (tdep) + regnum, + raw_buf); + if (status != REG_VALID) + return status; memcpy (buf, raw_buf, 16); /* Read upper 128bits. */ - regcache_raw_read (regcache, - tdep->ymm0h_regnum + regnum, - raw_buf); + status = regcache_raw_read (regcache, + tdep->ymm0h_regnum + regnum, + raw_buf); + if (status != REG_VALID) + return status; memcpy (buf + 16, raw_buf, 16); } else if (i386_word_regnum_p (gdbarch, regnum)) @@ -2579,7 +2586,9 @@ i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int gpnum = regnum - tdep->ax_regnum; /* Extract (always little endian). */ - regcache_raw_read (regcache, gpnum, raw_buf); + status = regcache_raw_read (regcache, gpnum, raw_buf); + if (status != REG_VALID) + return status; memcpy (buf, raw_buf, 2); } else if (i386_byte_regnum_p (gdbarch, regnum)) @@ -2591,7 +2600,9 @@ i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, /* Extract (always little endian). We read both lower and upper registers. */ - regcache_raw_read (regcache, gpnum % 4, raw_buf); + status = regcache_raw_read (regcache, gpnum % 4, raw_buf); + if (status != REG_VALID) + return status; if (gpnum >= 4) memcpy (buf, raw_buf + 1, 1); else @@ -2600,6 +2611,8 @@ i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, else internal_error (__FILE__, __LINE__, _("invalid regnum")); } + + return REG_VALID; } void |