#include "x86-64-tdep.h"
#include "x86-64-linux-tdep.h"
+#include "i386-linux-tdep.h"
+#include "amd64-nat.h"
+
+/* Mapping between the general-purpose registers in GNU/Linux x86-64
+ `struct user' format and GDB's register cache layout. */
+
+static int x86_64_linux_gregset64_reg_offset[] =
+{
+ RAX * 8, RBX * 8, /* %rax, %rbx */
+ RCX * 8, RDX * 8, /* %rcx, %rdx */
+ RSI * 8, RDI * 8, /* %rsi, %rdi */
+ RBP * 8, RSP * 8, /* %rbp, %rsp */
+ R8 * 8, R9 * 8, /* %r8 ... */
+ R10 * 8, R11 * 8,
+ R12 * 8, R13 * 8,
+ R14 * 8, R15 * 8, /* ... %r15 */
+ RIP * 8, EFLAGS * 8, /* %rip, %eflags */
+ DS * 8, ES * 8, /* %ds, %es */
+ FS * 8, GS * 8 /* %fs, %gs */
+};
+\f
+
+/* Mapping between the general-purpose registers in GNU/Linux x86-64
+ `struct user' format and GDB's register cache layout for GNU/Linux
+ i386.
+
+ Note that most GNU/Linux x86-64 registers are 64-bit, while the
+ GNU/Linux i386 registers are all 32-bit, but since we're
+ little-endian we get away with that. */
+
+/* From <sys/reg.h> on GNU/Linux i386. */
+static int x86_64_linux_gregset32_reg_offset[] =
+{
+ 10 * 8, 11 * 8, /* %eax, %ecx */
+ 12 * 8, 13 * 8, /* %edx, %ebx */
+ 19 * 8, 4 * 8, /* %esp, %ebp */
+ 13 * 8, 14 * 8, /* %esi, %edi */
+ 16 * 8, 18 * 8, /* %eip, %eflags */
+ 17 * 8, 20 * 8, /* %cs, %ss */
+ 23 * 8, 24 * 8, /* %ds, %es */
+ 25 * 4, 26 * 4, /* %fs, %gs */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 15 * 8 /* "orig_eax" */
+};
/* Which ptrace request retrieves which registers?
These apply to the corresponding SET requests as well. */
-#define GETREGS_SUPPLIES(regno) \
- (0 <= (regno) && (regno) < X86_64_NUM_GREGS)
-
#define GETFPREGS_SUPPLIES(regno) \
(FP0_REGNUM <= (regno) && (regno) <= MXCSR_REGNUM)
\f
/* Transfering the general-purpose registers between GDB, inferiors
and core files. */
-/* Fill GDB's register array with the general-purpose register values
+/* Fill GDB's register cache with the general-purpose register values
in *GREGSETP. */
void
supply_gregset (elf_gregset_t *gregsetp)
{
- x86_64_linux_supply_gregset ((char *) gregsetp);
+ 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
+ *GREGSETP with the value in GDB's register cache. If REGNUM is -1,
do this for all registers. */
void
-fill_gregset (elf_gregset_t *gregsetp, int regno)
+fill_gregset (elf_gregset_t *gregsetp, int regnum)
{
- x86_64_linux_fill_gregset ((char *) gregsetp, regno);
+ amd64_collect_native_gregset (current_regcache, gregsetp, regnum);
}
/* Fetch all general-purpose registers from process/thread TID and
- store their values in GDB's register array. */
+ store their values in GDB's register cache. */
static void
fetch_regs (int tid)
supply_gregset (®s);
}
-/* Store all valid general-purpose registers in GDB's register array
+/* Store all valid general-purpose registers in GDB's register cache
into the process/thread specified by TID. */
static void
-store_regs (int tid, int regno)
+store_regs (int tid, int regnum)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
perror_with_name ("Couldn't get registers");
- fill_gregset (®s, regno);
+ fill_gregset (®s, regnum);
if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
perror_with_name ("Couldn't write registers");
/* Transfering floating-point registers between GDB, inferiors and cores. */
-/* Fill GDB's register array with the floating-point and SSE register
+/* Fill GDB's register cache with the floating-point and SSE register
values in *FPREGSETP. */
void
}
/* Fill register REGNUM (if it is a floating-point or SSE register) in
- *FPREGSETP with the value in GDB's register array. If REGNUM is
+ *FPREGSETP with the value in GDB's register cache. If REGNUM is
-1, do this for all registers. */
void
}
/* Fetch all floating-point registers from process/thread TID and store
- thier values in GDB's register array. */
+ thier values in GDB's register cache. */
static void
fetch_fpregs (int tid)
supply_fpregset (&fpregs);
}
-/* Store all valid floating-point registers in GDB's register array
+/* Store all valid floating-point registers in GDB's register cache
into the process/thread specified by TID. */
static void
-store_fpregs (int tid, int regno)
+store_fpregs (int tid, int regnum)
{
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
perror_with_name ("Couldn't get floating point status");
- fill_fpregset (&fpregs, regno);
+ fill_fpregset (&fpregs, regnum);
if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
perror_with_name ("Couldn't write floating point status");
/* Transferring arbitrary registers between GDB and inferior. */
-/* Fetch register REGNO from the child process. If REGNO is -1, do
+/* Fetch register REGNUM from the child process. If REGNUM is -1, do
this for all registers (including the floating point and SSE
registers). */
void
-fetch_inferior_registers (int regno)
+fetch_inferior_registers (int regnum)
{
int tid;
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
- if (regno == -1)
+ if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
{
fetch_regs (tid);
- fetch_fpregs (tid);
- return;
+ if (regnum != -1)
+ return;
}
- if (GETREGS_SUPPLIES (regno))
- {
- fetch_regs (tid);
- return;
- }
-
- if (GETFPREGS_SUPPLIES (regno))
+ if (regnum == -1 || GETFPREGS_SUPPLIES (regnum))
{
fetch_fpregs (tid);
return;
}
internal_error (__FILE__, __LINE__,
- "Got request for bad register number %d.", regno);
+ "Got request for bad register number %d.", regnum);
}
-/* Store register REGNO back into the child process. If REGNO is -1,
- do this for all registers (including the floating-point and SSE
+/* Store register REGNUM back into the child process. If REGNUM is
+ -1, do this for all registers (including the floating-point and SSE
registers). */
void
-store_inferior_registers (int regno)
+store_inferior_registers (int regnum)
{
int tid;
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
- if (regno == -1)
+ if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
{
- store_regs (tid, regno);
- store_fpregs (tid, regno);
- return;
- }
-
- if (GETREGS_SUPPLIES (regno))
- {
- store_regs (tid, regno);
- return;
+ store_regs (tid, regnum);
+ if (regnum != -1)
+ return;
}
- if (GETFPREGS_SUPPLIES (regno))
+ if (regnum == -1 || GETFPREGS_SUPPLIES (regnum))
{
- store_fpregs (tid, regno);
+ store_fpregs (tid, regnum);
return;
}
internal_error (__FILE__, __LINE__,
- "Got request to store bad register number %d.", regno);
+ "Got request to store bad register number %d.", regnum);
}
\f
i386_cleanup_dregs ();
linux_child_post_startup_inferior (ptid);
}
+\f
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_x86_64_linux_nat (void);
+
+void
+_initialize_x86_64_linux_nat (void)
+{
+ amd64_native_gregset32_reg_offset = x86_64_linux_gregset32_reg_offset;
+ amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS;
+ amd64_native_gregset64_reg_offset = x86_64_linux_gregset64_reg_offset;
+
+ gdb_assert (ARRAY_SIZE (x86_64_linux_gregset32_reg_offset)
+ == amd64_native_gregset32_num_regs);
+ gdb_assert (ARRAY_SIZE (x86_64_linux_gregset64_reg_offset)
+ == amd64_native_gregset64_num_regs);
+}
projects / deliverable / binutils-gdb.git / blobdiff