PPC: Add support for Apple gdb in gdbstub

[mirror_qemu.git] / target-ppc / gdbstub.c

diff --git a/target-ppc/gdbstub.c b/target-ppc/gdbstub.c
index 381a3c7e315d1dffb2ad3574385ac6b51051b1c1..694d303e199df43977107d87b5b060c1bd6f3e94 100644 (file)
--- a/target-ppc/gdbstub.c
+++ b/target-ppc/gdbstub.c
@@ -21,6 +21,31 @@
 #include "qemu-common.h"
 #include "exec/gdbstub.h"
 
+static int ppc_gdb_register_len_apple(int n)
+{
+    switch (n) {
+    case 0 ... 31:
+        /* gprs */
+        return 8;
+    case 32 ... 63:
+        /* fprs */
+        return 8;
+    case 64 ... 95:
+        return 16;
+    case 64+32: /* nip */
+    case 65+32: /* msr */
+    case 67+32: /* lr */
+    case 68+32: /* ctr */
+    case 69+32: /* xer */
+    case 70+32: /* fpscr */
+        return 8;
+    case 66+32: /* cr */
+        return 4;
+    default:
+        return 0;
+    }
+}
+
 static int ppc_gdb_register_len(int n)
 {
     switch (n) {
@@ -132,6 +157,65 @@ int ppc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
     return r;
 }
 
+int ppc_cpu_gdb_read_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+    int r = ppc_gdb_register_len_apple(n);
+
+    if (!r) {
+        return r;
+    }
+
+    if (n < 32) {
+        /* gprs */
+        gdb_get_reg64(mem_buf, env->gpr[n]);
+    } else if (n < 64) {
+        /* fprs */
+        stfq_p(mem_buf, env->fpr[n-32]);
+    } else if (n < 96) {
+        /* Altivec */
+        stq_p(mem_buf, n - 64);
+        stq_p(mem_buf + 8, 0);
+    } else {
+        switch (n) {
+        case 64 + 32:
+            gdb_get_reg64(mem_buf, env->nip);
+            break;
+        case 65 + 32:
+            gdb_get_reg64(mem_buf, env->msr);
+            break;
+        case 66 + 32:
+            {
+                uint32_t cr = 0;
+                int i;
+                for (i = 0; i < 8; i++) {
+                    cr |= env->crf[i] << (32 - ((i + 1) * 4));
+                }
+                gdb_get_reg32(mem_buf, cr);
+                break;
+            }
+        case 67 + 32:
+            gdb_get_reg64(mem_buf, env->lr);
+            break;
+        case 68 + 32:
+            gdb_get_reg64(mem_buf, env->ctr);
+            break;
+        case 69 + 32:
+            gdb_get_reg64(mem_buf, env->xer);
+            break;
+        case 70 + 32:
+            gdb_get_reg64(mem_buf, env->fpscr);
+            break;
+        }
+    }
+    if (msr_le) {
+        /* If cpu is in LE mode, convert memory contents to LE. */
+        ppc_gdb_swap_register(mem_buf, n, r);
+    }
+    return r;
+}
+
 int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -185,3 +269,56 @@ int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
     }
     return r;
 }
+int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+    int r = ppc_gdb_register_len_apple(n);
+
+    if (!r) {
+        return r;
+    }
+    if (msr_le) {
+        /* If cpu is in LE mode, convert memory contents to LE. */
+        ppc_gdb_swap_register(mem_buf, n, r);
+    }
+    if (n < 32) {
+        /* gprs */
+        env->gpr[n] = ldq_p(mem_buf);
+    } else if (n < 64) {
+        /* fprs */
+        env->fpr[n-32] = ldfq_p(mem_buf);
+    } else {
+        switch (n) {
+        case 64 + 32:
+            env->nip = ldq_p(mem_buf);
+            break;
+        case 65 + 32:
+            ppc_store_msr(env, ldq_p(mem_buf));
+            break;
+        case 66 + 32:
+            {
+                uint32_t cr = ldl_p(mem_buf);
+                int i;
+                for (i = 0; i < 8; i++) {
+                    env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF;
+                }
+                break;
+            }
+        case 67 + 32:
+            env->lr = ldq_p(mem_buf);
+            break;
+        case 68 + 32:
+            env->ctr = ldq_p(mem_buf);
+            break;
+        case 69 + 32:
+            env->xer = ldq_p(mem_buf);
+            break;
+        case 70 + 32:
+            /* fpscr */
+            store_fpscr(env, ldq_p(mem_buf), 0xffffffff);
+            break;
+        }
+    }
+    return r;
+}