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Diffstat (limited to 'gdb/i386bsd-nat.c')
-rw-r--r--gdb/i386bsd-nat.c107
1 files changed, 41 insertions, 66 deletions
diff --git a/gdb/i386bsd-nat.c b/gdb/i386bsd-nat.c
index 9b60567..4d663fc 100644
--- a/gdb/i386bsd-nat.c
+++ b/gdb/i386bsd-nat.c
@@ -31,18 +31,6 @@
#include <machine/reg.h>
#include <machine/frame.h>
-#ifdef HAVE_SYS_PROCFS_H
-#include <sys/procfs.h>
-#endif
-
-#ifndef HAVE_GREGSET_T
-typedef struct reg gregset_t;
-#endif
-
-#ifndef HAVE_FPREGSET_T
-typedef struct fpreg fpregset_t;
-#endif
-
#include "i386-tdep.h"
#include "i387-tdep.h"
@@ -52,21 +40,13 @@ typedef struct fpreg fpregset_t;
registers until the 3.0 release. We have autoconf checks for their
presence, and deal gracefully with their absence. */
-/* Registers we shouldn't try to fetch. */
-#undef CANNOT_FETCH_REGISTER
-#define CANNOT_FETCH_REGISTER(regnum) cannot_fetch_register (regnum)
+/* Offset in `struct reg' where MEMBER is stored. */
+#define REG_OFFSET(member) offsetof (struct reg, member)
-/* Registers we shouldn't try to store. */
-#undef CANNOT_STORE_REGISTER
-#define CANNOT_STORE_REGISTER(regnum) cannot_fetch_register (regnum)
-
-/* Offset to the gregset_t location where REG is stored. */
-#define REG_OFFSET(reg) offsetof (gregset_t, reg)
-
-/* At reg_offset[REGNUM] you'll find the offset to the gregset_t
- location where the GDB register REGNUM is stored. Unsupported
+/* At i386bsd_reg_offset[REGNUM] you'll find the offset in `struct
+ reg' where the GDB register REGNUM is stored. Unsupported
registers are marked with `-1'. */
-static int reg_offset[] =
+static int i386bsd_r_reg_offset[] =
{
REG_OFFSET (r_eax),
REG_OFFSET (r_ecx),
@@ -94,8 +74,6 @@ static int reg_offset[] =
#endif
};
-#define REG_ADDR(regset, regnum) ((char *) (regset) + reg_offset[regnum])
-
/* Macro to determine if a register is fetched with PT_GETREGS. */
#define GETREGS_SUPPLIES(regnum) \
((0 <= (regnum) && (regnum) <= 15))
@@ -105,52 +83,47 @@ static int reg_offset[] =
so that we try PT_GETXMMREGS the first time around. */
static int have_ptrace_xmmregs = -1;
#endif
-
-/* Return nonzero if we shouldn't try to fetch register REGNUM. */
-
-static int
-cannot_fetch_register (int regnum)
-{
- return (reg_offset[regnum] == -1);
-}
-/* Transfering the registers between GDB, inferiors and core files. */
-
-/* Fill GDB's register array with the general-purpose register values
- in *GREGSETP. */
+/* Supply the general-purpose registers in GREGS, to REGCACHE. */
static void
-supply_gregset (gregset_t *gregsetp)
+i386bsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
- struct regcache *regcache = current_regcache;
+ const char *regs = gregs;
int regnum;
- for (regnum = 0; regnum < I386_NUM_GREGS; regnum++)
+ for (regnum = 0; regnum < ARRAY_SIZE (i386bsd_r_reg_offset); regnum++)
{
- if (CANNOT_FETCH_REGISTER (regnum))
- regcache_raw_supply (regcache, regnum, NULL);
- else
- regcache_raw_supply (regcache, regnum, REG_ADDR (gregsetp, regnum));
+ int offset = i386bsd_r_reg_offset[regnum];
+
+ if (offset != -1)
+ regcache_raw_supply (regcache, regnum, regs + offset);
}
}
-/* 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. */
+/* Collect register REGNUM from REGCACHE and store its contents in
+ GREGS. If REGNUM is -1, collect and store all appropriate
+ registers. */
static void
-fill_gregset (gregset_t *gregsetp, int regnum)
+i386bsd_collect_gregset (const struct regcache *regcache,
+ void *gregs, int regnum)
{
- struct regcache *regcache = current_regcache;
+ char *regs = gregs;
int i;
- for (i = 0; i < I386_NUM_GREGS; i++)
- if ((regnum == -1 || regnum == i) && ! CANNOT_STORE_REGISTER (i))
- regcache_raw_collect (regcache, i, REG_ADDR (gregsetp, i));
-}
-
+ for (i = 0; i < ARRAY_SIZE (i386bsd_r_reg_offset); i++)
+ {
+ if (regnum == -1 || regnum == i)
+ {
+ int offset = i386bsd_r_reg_offset[i];
+ if (offset != -1)
+ regcache_raw_collect (regcache, i, regs + offset);
+ }
+ }
+}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating point registers). */
@@ -160,20 +133,20 @@ fetch_inferior_registers (int regnum)
{
if (regnum == -1 || GETREGS_SUPPLIES (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);
+ i386bsd_supply_gregset (current_regcache, &regs);
if (regnum != -1)
return;
}
if (regnum == -1 || regnum >= I386_ST0_REGNUM)
{
- fpregset_t fpregs;
+ struct fpreg fpregs;
#ifdef HAVE_PT_GETXMMREGS
char xmmregs[512];
@@ -210,16 +183,16 @@ store_inferior_registers (int regnum)
{
if (regnum == -1 || GETREGS_SUPPLIES (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, regnum);
+ i386bsd_collect_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 (regnum != -1)
@@ -228,7 +201,7 @@ store_inferior_registers (int regnum)
if (regnum == -1 || regnum >= I386_ST0_REGNUM)
{
- fpregset_t fpregs;
+ struct fpreg fpregs;
#ifdef HAVE_PT_GETXMMREGS
char xmmregs[512];
@@ -349,7 +322,9 @@ i386bsd_dr_get_status (void)
CORE_ADDR
register_u_addr (CORE_ADDR blockend, int regnum)
{
- return (CORE_ADDR) REG_ADDR (blockend, regnum);
+ gdb_assert (regnum >= 0 && regnum < ARRAY_SIZE (i386bsd_r_reg_offset));
+
+ return blockend + i386bsd_r_reg_offset[regnum];
}
#include <sys/param.h>
generated by cgit v1.1 at 2024-12-23 14:41:54 +0000