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authorMichal Ludvig <mludvig@suse.cz>2002-06-07 16:11:10 +0000
committerMichal Ludvig <mludvig@suse.cz>2002-06-07 16:11:10 +0000
commit62e8b8bcdd5eef5e2328bf6e139f6c80793cd9f1 (patch)
treebfc427da71abfd2e62ef5b022dd711554d5a2174 /gdb/x86-64-linux-nat.c
parent10de1cbaf381d28993e64086215310eaf63c2ef9 (diff)
downloadgdb-62e8b8bcdd5eef5e2328bf6e139f6c80793cd9f1.tar.gz
2002-06-07 Michal Ludvig <mludvig@suse.cz>
* x86-64-linux-nat.c (x86_64_fxsave_offset): New. (supply_fpregset, fill_fpregset): Don't call i387_*_fxsave, better do the things actually here. * x86-64-tdep.c (x86_64_register_name2nr): New. (x86_64_register_name): Renamed to x86_64_register_nr2name. (x86_64_gdbarch_init): Respect the above change. * x86-64-tdep.h (x86_64_register_name2nr) (x86_64_register_nr2name): Add prototypes. * config/i386/x86-64linux.mt (TDEPFILES): Remove i387-tdep.o.
Diffstat (limited to 'gdb/x86-64-linux-nat.c')
-rw-r--r--gdb/x86-64-linux-nat.c69
1 files changed, 59 insertions, 10 deletions
diff --git a/gdb/x86-64-linux-nat.c b/gdb/x86-64-linux-nat.c
index f57a5f27675..4c4f64382c4 100644
--- a/gdb/x86-64-linux-nat.c
+++ b/gdb/x86-64-linux-nat.c
@@ -25,7 +25,6 @@
#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
-#include "i387-tdep.h"
#include "gdb_assert.h"
#include "x86-64-tdep.h"
@@ -195,23 +194,73 @@ store_regs (int tid, int regno)
/* Transfering floating-point registers between GDB, inferiors and cores. */
-/* Fill GDB's register array with the floating-point register values in
- *FPREGSETP. */
+static void *
+x86_64_fxsave_offset (elf_fpregset_t * fxsave, int regnum)
+{
+ char *reg_name;
+ int reg_index;
+
+ gdb_assert (x86_64_num_gregs - 1 < regnum && regnum < x86_64_num_regs);
+
+ reg_name = x86_64_register_nr2name (regnum);
+
+ if (reg_name[0] == 's' && reg_name[1] == 't')
+ {
+ reg_index = reg_name[2] - '0';
+ return &fxsave->st_space[reg_index * 2];
+ }
+
+ if (reg_name[0] == 'x' && reg_name[1] == 'm' && reg_name[2] == 'm')
+ {
+ reg_index = reg_name[3] - '0';
+ return &fxsave->xmm_space[reg_index * 4];
+ }
+
+ if (strcmp (reg_name, "mxcsr") == 0)
+ return &fxsave->mxcsr;
+
+ return NULL;
+}
+
+/* Fill GDB's register array with the floating-point and SSE register
+ values in *FXSAVE. This function masks off any of the reserved
+ bits in *FXSAVE. */
void
-supply_fpregset (elf_fpregset_t * fpregsetp)
+supply_fpregset (elf_fpregset_t * fxsave)
{
- i387_supply_fxsave ((char *) fpregsetp);
+ int i, reg_st0, reg_mxcsr;
+
+ reg_st0 = x86_64_register_name2nr ("st0");
+ reg_mxcsr = x86_64_register_name2nr ("mxcsr");
+
+ gdb_assert (reg_st0 > 0 && reg_mxcsr > reg_st0);
+
+ for (i = reg_st0; i <= reg_mxcsr; i++)
+ supply_register (i, x86_64_fxsave_offset (fxsave, i));
}
-/* Fill register REGNO (if it is a floating-point register) in
- *FPREGSETP with the value in GDB's register array. If REGNO is -1,
- do this for all registers. */
+/* Fill register REGNUM (if it is a floating-point or SSE register) in
+ *FXSAVE with the value in GDB's register array. If REGNUM is -1, do
+ this for all registers. This function doesn't touch any of the
+ reserved bits in *FXSAVE. */
void
-fill_fpregset (elf_fpregset_t * fpregsetp, int regno)
+fill_fpregset (elf_fpregset_t * fxsave, int regnum)
{
- i387_fill_fxsave ((char *) fpregsetp, regno);
+ int i, last_regnum = MXCSR_REGNUM;
+ void *ptr;
+
+ if (gdbarch_tdep (current_gdbarch)->num_xmm_regs == 0)
+ last_regnum = FOP_REGNUM;
+
+ for (i = FP0_REGNUM; i <= last_regnum; i++)
+ if (regnum == -1 || regnum == i)
+ {
+ ptr = x86_64_fxsave_offset (fxsave, i);
+ if (ptr)
+ regcache_collect (i, ptr);
+ }
}
/* Fetch all floating-point registers from process/thread TID and store