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authorKevin Buettner <kevinb@redhat.com>2003-08-12 16:12:33 +0000
committerKevin Buettner <kevinb@redhat.com>2003-08-12 16:12:33 +0000
commit49ed40de4ec7230bed1eca033992ce57be7b69f9 (patch)
tree9d6eb88310d1f8207fe7c4fec88daa7fdadf9c31 /gdb/i386-tdep.c
parent9ad1aa29111ec1ac6d0a37d95609aac99143f15c (diff)
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* i386-tdep.c (i386_gdbarch_init): Enable default support for
SSE registers.
Diffstat (limited to 'gdb/i386-tdep.c')
-rw-r--r--gdb/i386-tdep.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 83a65ee..2c7afca 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -1757,10 +1757,23 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep = XMALLOC (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
- /* The i386 default settings don't include the SSE registers.
+ /* The i386 default settings now include the SSE registers.
+ I386_NUM_XREGS includes mxcsr, and we don't want to count
+ this as one of the xmm regs -- which is why we subtract one.
+
+ Note: kevinb/2003-07-14: Whatever Mark's concerns are about the
+ FPU registers in the FIXME below apply to the SSE registers as well.
+ The only problem that I see is that these registers will show up
+ in "info all-registers" even on CPUs where they don't exist. IMO,
+ however, if it's a choice between printing them always (even when
+ they don't exist) or never showing them to the user (even when they
+ do exist), I prefer the former over the latter. Ideally, of course,
+ we'd somehow autodetect that we have them (or not) and display them
+ when we have them and suppress them when we don't.
+
FIXME: kettenis/20020614: They do include the FPU registers for
now, which probably is not quite right. */
- tdep->num_xmm_regs = 0;
+ tdep->num_xmm_regs = I386_NUM_XREGS - 1;
tdep->jb_pc_offset = -1;
tdep->struct_return = pcc_struct_return;
@@ -1782,9 +1795,9 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
alignment. */
set_gdbarch_long_double_bit (gdbarch, 96);
- /* The default ABI includes general-purpose registers and
- floating-point registers. */
- set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS);
+ /* The default ABI includes general-purpose registers,
+ floating-point registers, and the SSE registers. */
+ set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS);
set_gdbarch_register_name (gdbarch, i386_register_name);
set_gdbarch_register_type (gdbarch, i386_register_type);