This patch fixes the registers for the 'g' and 'G' packets for the
qemu-system-x86_64 target. It allows gdb 6.5 to debug a linux kernel
and get a stack back trace.
signed-off-by: [EMAIL PROTECTED]
Thanks,
Jason.
Index: qemu/gdbstub.c
===================================================================
--- qemu.orig/gdbstub.c
+++ qemu/gdbstub.c
@@ -184,9 +184,70 @@ static int put_packet(GDBState *s, char
}
return 0;
}
+#if defined(TARGET_X86_64)
+/* Defines from GDB register struct numbers */
+#define _RAX 0
+#define _RDX 1
+#define _RCX 2
+#define _RBX 3
+#define _RSI 4
+#define _RDI 5
+#define _RBP 6
+#define _RSP 7
+#define _R8 8
+#define _R9 9
+#define _R10 10
+#define _R11 11
+#define _R12 12
+#define _R13 13
+#define _R14 14
+#define _R15 15
+#define _PC 16
+#define _PS 17
-#if defined(TARGET_I386)
+static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
+{
+ uint64_t *registers = (uint64_t *)mem_buf;
+ int i;
+
+ registers[_RAX] = env->regs[R_EAX];
+ registers[_RBX] = env->regs[R_EBX];
+ registers[_RCX] = env->regs[R_ECX];
+ registers[_RDX] = env->regs[R_EDX];
+ registers[_RSI] = env->regs[R_ESI];
+ registers[_RDI] = env->regs[R_EDI];
+ registers[_RBP] = env->regs[R_EBP];
+ registers[_RSP] = env->regs[R_ESP];
+ for (i = 8; i < 16; i++)
+ registers[i] = env->regs[i];
+ registers[_PC] = env->eip;
+ registers[_PS] = env->eflags;
+ for(i = 0; i < 18; i++)
+ tswapl(registers[i]);
+
+ return 18 * 8;
+}
+
+static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
+{
+ uint32_t *registers = (uint32_t *)mem_buf;
+ int i;
+
+ env->regs[R_EAX] = tswapl(registers[_RAX]);
+ env->regs[R_EBX] = tswapl(registers[_RBX]);
+ env->regs[R_ECX] = tswapl(registers[_RCX]);
+ env->regs[R_EDX] = tswapl(registers[_RDX]);
+ env->regs[R_ESI] = tswapl(registers[_RSI]);
+ env->regs[R_EDI] = tswapl(registers[_RDI]);
+ env->regs[R_EBP] = tswapl(registers[_RBP]);
+ env->regs[R_ESP] = tswapl(registers[_RSP]);
+ for (i = 8; i < 16; i++)
+ env->regs[i] = tswapl(registers[i]);
+ env->eip = tswapl(registers[_PC]);
+ env->eflags = tswapl(registers[_PS]);
+}
+#elif defined(TARGET_I386)
static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
{
uint32_t *registers = (uint32_t *)mem_buf;
_______________________________________________
Qemu-devel mailing list
Qemu-devel@nongnu.org
http://lists.nongnu.org/mailman/listinfo/qemu-devel