Add GDB XML register description support.

Signed-off-by: Paul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5459 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 33 insertions, 0 deletions

diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index 7f0139237b..405cb9af4e 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -26,6 +26,7 @@
 #include "cpu.h"
 #include "exec-all.h"
 #include "qemu-common.h"
+#include "gdbstub.h"
 
 #include "helpers.h"
 
@@ -53,6 +54,33 @@ static m68k_def_t m68k_cpu_defs[] = {
     {NULL, 0},
 };
 
+static int fpu_gdb_get_reg(CPUState *env, uint8_t *mem_buf, int n)
+{
+    if (n < 8) {
+        stfq_p(mem_buf, env->fregs[n]);
+        return 8;
+    }
+    if (n < 11) {
+        /* FP control registers (not implemented)  */
+        memset(mem_buf, 0, 4);
+        return 4;
+    }
+    return 0;
+}
+
+static int fpu_gdb_set_reg(CPUState *env, uint8_t *mem_buf, int n)
+{
+    if (n < 8) {
+        env->fregs[n] = ldfq_p(mem_buf);
+        return 8;
+    }
+    if (n < 11) {
+        /* FP control registers (not implemented)  */
+        return 4;
+    }
+    return 0;
+}
+
 static void m68k_set_feature(CPUM68KState *env, int feature)
 {
     env->features |= (1u << feature);
@@ -105,6 +133,11 @@ static int cpu_m68k_set_model(CPUM68KState *env, const char *name)
     }
 
     register_m68k_insns(env);
+    if (m68k_feature (env, M68K_FEATURE_CF_FPU)) {
+        gdb_register_coprocessor(env, fpu_gdb_get_reg, fpu_gdb_set_reg,
+                                 11, "cf-fp.xml", 18);
+    }
+    /* TODO: Add [E]MAC registers.  */
     return 0;
 }