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Diffstat (limited to 'gdb/amd64fbsd-nat.c')
-rw-r--r--gdb/amd64fbsd-nat.c104
1 files changed, 56 insertions, 48 deletions
diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c
index e90d8fa..dee2c8d 100644
--- a/gdb/amd64fbsd-nat.c
+++ b/gdb/amd64fbsd-nat.c
@@ -1,4 +1,5 @@
/* Native-dependent code for FreeBSD/amd64.
+
Copyright 2003 Free Software Foundation, Inc.
This file is part of GDB.
@@ -44,13 +45,14 @@ typedef struct fpreg fpregset_t;
#include "gregset.h"
#include "x86-64-tdep.h"
+#include "amd64-nat.h"
/* Offset to the gregset_t location where REG is stored. */
#define REG_OFFSET(reg) offsetof (gregset_t, reg)
-/* At reg_offset[REGNO] you'll find the offset to the gregset_t
- location where the GDB register REGNO is stored. Unsupported
+/* At reg_offset[REGNUM] you'll find the offset to the gregset_t
+ location where the GDB register REGNUM is stored. Unsupported
registers are marked with `-1'. */
static int reg_offset[] =
{
@@ -77,12 +79,27 @@ static int reg_offset[] =
-1,
-1
};
+
+
+/* Mapping between the general-purpose registers in FreeBSD/amd64
+ `struct reg' format and GDB's register cache layout for
+ FreeBSD/i386.
-#define REG_ADDR(regset, regno) ((char *) (regset) + reg_offset[regno])
+ Note that most FreeBSD/amd64 registers are 64-bit, while the
+ FreeBSD/i386 registers are all 32-bit, but since we're
+ little-endian we get away with that. */
-/* Macro to determine if a register is fetched with PT_GETREGS. */
-#define GETREGS_SUPPLIES(regno) \
- ((0 <= (regno) && (regno) < X86_64_NUM_GREGS))
+/* From <machine/reg.h>. */
+static int amd64fbsd32_r_reg_offset[I386_NUM_GREGS] =
+{
+ 14 * 8, 13 * 8, /* %eax, %ecx */
+ 12 * 8, 11 * 8, /* %edx, %ebx */
+ 20 * 8, 10 * 8, /* %esp, %ebp */
+ 9 * 8, 8 * 8, /* %esi, %edi */
+ 17 * 8, 19 * 8, /* %eip, %eflags */
+ 18 * 8, 21 * 8, /* %cs, %ss */
+ -1, -1, -1, -1 /* %ds, %es, %fs, %gs */
+};
/* Transfering the registers between GDB, inferiors and core files. */
@@ -93,29 +110,17 @@ static int reg_offset[] =
void
supply_gregset (gregset_t *gregsetp)
{
- int i;
-
- for (i = 0; i < X86_64_NUM_GREGS; i++)
- {
- if (reg_offset[i] == -1)
- supply_register (i, NULL);
- else
- supply_register (i, REG_ADDR (gregsetp, i));
- }
+ amd64_supply_native_gregset (current_regcache, gregsetp, -1);
}
-/* Fill register REGNO (if it is a general-purpose register) in
- *GREGSETPS with the value in GDB's register array. If REGNO is -1,
+/* Fill register REGNUM (if it is a general-purpose register) in
+ *GREGSETPS with the value in GDB's register array. If REGNUM is -1,
do this for all registers. */
void
-fill_gregset (gregset_t *gregsetp, int regno)
+fill_gregset (gregset_t *gregsetp, int regnum)
{
- int i;
-
- for (i = 0; i < X86_64_NUM_GREGS; i++)
- if ((regno == -1 || regno == i) && reg_offset[i] != -1)
- regcache_collect (i, REG_ADDR (gregsetp, i));
+ amd64_collect_native_gregset (current_regcache, gregsetp, regnum);
}
/* Fill GDB's register array with the floating-point register values
@@ -127,80 +132,80 @@ supply_fpregset (fpregset_t *fpregsetp)
x86_64_supply_fxsave ((const char *) fpregsetp, -1);
}
-/* Fill register REGNO (if it is a floating-point register) in
- *FPREGSETP with the value in GDB's register array. If REGNO is -1,
+/* Fill register REGNUM (if it is a floating-point register) in
+ *FPREGSETP with the value in GDB's register array. If REGNUM is -1,
do this for all registers. */
void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
+fill_fpregset (fpregset_t *fpregsetp, int regnum)
{
- x86_64_fill_fxsave ((char *) fpregsetp, regno);
+ x86_64_fill_fxsave ((char *) fpregsetp, regnum);
}
-/* Fetch register REGNO from the inferior. If REGNO is -1, do this
+/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating point registers). */
void
-fetch_inferior_registers (int regno)
+fetch_inferior_registers (int regnum)
{
- if (regno == -1 || GETREGS_SUPPLIES (regno))
+ if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
{
- gregset_t gregs;
+ struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ (PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't get registers");
- supply_gregset (&gregs);
- if (regno != -1)
+ amd64_supply_native_gregset (current_regcache, &regs, -1);
+ if (regnum != -1)
return;
}
- if (regno == -1 || regno >= FP0_REGNUM)
+ if (regnum == -1 || regnum >= FP0_REGNUM)
{
- fpregset_t fpregs;
+ struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
- supply_fpregset (&fpregs);
+ x86_64_supply_fxsave ((const char *) &fpregs, -1);
}
}
-/* Store register REGNO back into the inferior. If REGNO is -1, do
+/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating point registers). */
void
-store_inferior_registers (int regno)
+store_inferior_registers (int regnum)
{
- if (regno == -1 || GETREGS_SUPPLIES (regno))
+ if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
{
- gregset_t gregs;
+ struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ (PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't get registers");
- fill_gregset (&gregs, regno);
+ amd64_collect_native_gregset (current_regcache, &regs, regnum);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ (PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't write registers");
- if (regno != -1)
+ if (regnum != -1)
return;
}
- if (regno == -1 || regno >= FP0_REGNUM)
+ if (regnum == -1 || regnum >= FP0_REGNUM)
{
- fpregset_t fpregs;
+ struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
- fill_fpregset (&fpregs, regno);
+ x86_64_fill_fxsave ((char *) &fpregs, regnum);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
@@ -217,6 +222,9 @@ _initialize_am64fbsd_nat (void)
{
int offset;
+ amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset;
+ amd64_native_gregset64_reg_offset = reg_offset;
+
/* To support the recognition of signal handlers, i386bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
are compiling a native debugger, which means that we can use the
generated by cgit v1.1 at 2024-11-24 09:45:22 +0000