X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=gdbstub.c;h=bca9b1e2a647005e792a6e23a7b4819671e931f6;hb=7ef4da1c3a753888e2678388150f1b846b025168;hp=cbae3208cfccf9c548e68fe1e8c2e7673a5216ef;hpb=3fc6c082e3aad85addf25d36740030982963c0c8;p=qemu

diff --git a/gdbstub.c b/gdbstub.c
index cbae320..bca9b1e 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -47,6 +47,7 @@ enum RSState {
 static int gdbserver_fd = -1;
 
 typedef struct GDBState {
+    CPUState *env; /* current CPU */
     enum RSState state; /* parsing state */
     int fd;
     char line_buf[4096];
@@ -297,7 +298,7 @@ static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
     int i;
 
     /* fill in g0..g7 */
-    for(i = 0; i < 7; i++) {
+    for(i = 0; i < 8; i++) {
         registers[i] = tswapl(env->gregs[i]);
     }
     /* fill in register window */
@@ -398,7 +399,7 @@ static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
     memset (ptr, 0, 8 * 12 + 4);
     ptr += 8 * 12 + 4;
     /* CPSR (4 bytes).  */
-    *(uint32_t *)ptr = tswapl (env->cpsr);
+    *(uint32_t *)ptr = tswapl (cpsr_read(env));
     ptr += 4;
 
     return ptr - mem_buf;
@@ -418,7 +419,112 @@ static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
       }
     /* Ignore FPA regs and scr.  */
     ptr += 8 * 12 + 4;
-    env->cpsr = tswapl(*(uint32_t *)ptr);
+    cpsr_write (env, tswapl(*(uint32_t *)ptr), 0xffffffff);
+}
+#elif defined (TARGET_MIPS)
+static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
+{
+    int i;
+    uint8_t *ptr;
+
+    ptr = mem_buf;
+    for (i = 0; i < 32; i++)
+      {
+        *(uint32_t *)ptr = tswapl(env->gpr[i]);
+        ptr += 4;
+      }
+
+    *(uint32_t *)ptr = tswapl(env->CP0_Status);
+    ptr += 4;
+
+    *(uint32_t *)ptr = tswapl(env->LO);
+    ptr += 4;
+
+    *(uint32_t *)ptr = tswapl(env->HI);
+    ptr += 4;
+
+    *(uint32_t *)ptr = tswapl(env->CP0_BadVAddr);
+    ptr += 4;
+
+    *(uint32_t *)ptr = tswapl(env->CP0_Cause);
+    ptr += 4;
+
+    *(uint32_t *)ptr = tswapl(env->PC);
+    ptr += 4;
+
+    /* 32 FP registers, fsr, fir, fp.  Not yet implemented.  */
+
+    return ptr - mem_buf;
+}
+
+static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
+{
+    int i;
+    uint8_t *ptr;
+
+    ptr = mem_buf;
+    for (i = 0; i < 32; i++)
+      {
+        env->gpr[i] = tswapl(*(uint32_t *)ptr);
+        ptr += 4;
+      }
+
+    env->CP0_Status = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+
+    env->LO = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+
+    env->HI = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+
+    env->CP0_BadVAddr = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+
+    env->CP0_Cause = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+
+    env->PC = tswapl(*(uint32_t *)ptr);
+    ptr += 4;
+}
+#elif defined (TARGET_SH4)
+static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
+{
+  uint32_t *ptr = (uint32_t *)mem_buf;
+  int i;
+
+#define SAVE(x) *ptr++=tswapl(x)
+  for (i = 0; i < 16; i++) SAVE(env->gregs[i]);
+  SAVE (env->pc);
+  SAVE (env->pr);
+  SAVE (env->gbr);
+  SAVE (env->vbr);
+  SAVE (env->mach);
+  SAVE (env->macl);
+  SAVE (env->sr);
+  SAVE (0); /* TICKS */
+  SAVE (0); /* STALLS */
+  SAVE (0); /* CYCLES */
+  SAVE (0); /* INSTS */
+  SAVE (0); /* PLR */
+
+  return ((uint8_t *)ptr - mem_buf);
+}
+
+static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
+{
+  uint32_t *ptr = (uint32_t *)mem_buf;
+  int i;
+
+#define LOAD(x) (x)=*ptr++;
+  for (i = 0; i < 16; i++) LOAD(env->gregs[i]);
+  LOAD (env->pc);
+  LOAD (env->pr);
+  LOAD (env->gbr);
+  LOAD (env->vbr);
+  LOAD (env->mach);
+  LOAD (env->macl);
+  LOAD (env->sr);
 }
 #else
 static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
@@ -462,6 +568,10 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
 #elif defined (TARGET_SPARC)
             env->pc = addr;
             env->npc = addr + 4;
+#elif defined (TARGET_ARM)
+            env->regs[15] = addr;
+#elif defined (TARGET_SH4)
+	    env->pc = addr;
 #endif
         }
 #ifdef CONFIG_USER_ONLY
@@ -480,6 +590,10 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
 #elif defined (TARGET_SPARC)
             env->pc = addr;
             env->npc = addr + 4;
+#elif defined (TARGET_ARM)
+            env->regs[15] = addr;
+#elif defined (TARGET_SH4)
+	    env->pc = addr;
 #endif
         }
         cpu_single_step(env, 1);
@@ -506,10 +620,12 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
         if (*p == ',')
             p++;
         len = strtoul(p, NULL, 16);
-        if (cpu_memory_rw_debug(env, addr, mem_buf, len, 0) != 0)
-            memset(mem_buf, 0, len);
-        memtohex(buf, mem_buf, len);
-        put_packet(s, buf);
+        if (cpu_memory_rw_debug(env, addr, mem_buf, len, 0) != 0) {
+            put_packet (s, "E14");
+        } else {
+            memtohex(buf, mem_buf, len);
+            put_packet(s, buf);
+        }
         break;
     case 'M':
         addr = strtoul(p, (char **)&p, 16);
@@ -576,21 +692,24 @@ static void gdb_vm_stopped(void *opaque, int reason)
     int ret;
 
     /* disable single step if it was enable */
-    cpu_single_step(cpu_single_env, 0);
+    cpu_single_step(s->env, 0);
 
     if (reason == EXCP_DEBUG) {
-	tb_flush(cpu_single_env);
+	tb_flush(s->env);
         ret = SIGTRAP;
-    }
-    else
+    } else if (reason == EXCP_INTERRUPT) {
+        ret = SIGINT;
+    } else {
         ret = 0;
+    }
     snprintf(buf, sizeof(buf), "S%02x", ret);
     put_packet(s, buf);
 }
 #endif
 
-static void gdb_read_byte(GDBState *s, CPUState *env, int ch)
+static void gdb_read_byte(GDBState *s, int ch)
 {
+    CPUState *env = s->env;
     int i, csum;
     char reply[1];
 
@@ -676,7 +795,7 @@ gdb_handlesig (CPUState *env, int sig)
           int i;
 
           for (i = 0; i < n; i++)
-            gdb_read_byte (s, env, buf[i]);
+            gdb_read_byte (s, buf[i]);
         }
       else if (n == 0 || errno != EAGAIN)
         {
@@ -704,30 +823,30 @@ void gdb_exit(CPUState *env, int code)
 }
 
 #else
-static int gdb_can_read(void *opaque)
-{
-    return 256;
-}
-
-static void gdb_read(void *opaque, const uint8_t *buf, int size)
+static void gdb_read(void *opaque)
 {
     GDBState *s = opaque;
-    int i;
+    int i, size;
+    uint8_t buf[4096];
+
+    size = read(s->fd, buf, sizeof(buf));
+    if (size < 0)
+        return;
     if (size == 0) {
         /* end of connection */
         qemu_del_vm_stop_handler(gdb_vm_stopped, s);
-        qemu_del_fd_read_handler(s->fd);
+        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
         qemu_free(s);
         vm_start();
     } else {
         for(i = 0; i < size; i++)
-            gdb_read_byte(s, cpu_single_env, buf[i]);
+            gdb_read_byte(s, buf[i]);
     }
 }
 
 #endif
 
-static void gdb_accept(void *opaque, const uint8_t *buf, int size)
+static void gdb_accept(void *opaque)
 {
     GDBState *s;
     struct sockaddr_in sockaddr;
@@ -759,6 +878,7 @@ static void gdb_accept(void *opaque, const uint8_t *buf, int size)
         return;
     }
 #endif
+    s->env = first_cpu; /* XXX: allow to change CPU */
     s->fd = fd;
 
     fcntl(fd, F_SETFL, O_NONBLOCK);
@@ -768,7 +888,7 @@ static void gdb_accept(void *opaque, const uint8_t *buf, int size)
     vm_stop(EXCP_INTERRUPT);
 
     /* start handling I/O */
-    qemu_add_fd_read_handler(s->fd, gdb_can_read, gdb_read, s);
+    qemu_set_fd_handler(s->fd, gdb_read, NULL, s);
     /* when the VM is stopped, the following callback is called */
     qemu_add_vm_stop_handler(gdb_vm_stopped, s);
 #endif
@@ -815,9 +935,9 @@ int gdbserver_start(int port)
         return -1;
     /* accept connections */
 #ifdef CONFIG_USER_ONLY
-    gdb_accept (NULL, NULL, 0);
+    gdb_accept (NULL);
 #else
-    qemu_add_fd_read_handler(gdbserver_fd, NULL, gdb_accept, NULL);
+    qemu_set_fd_handler(gdbserver_fd, gdb_accept, NULL, NULL);
 #endif
     return 0;
 }