sparc64 marge (Blue Swirl)

[mirror_qemu.git] / linux-user / main.c

diff --git a/linux-user/main.c b/linux-user/main.c
index 126a9193edc641c8be6f58cccaea2d140c2ea444..5601a23e674c514f105ccf333933d0b4fa3de766 100644 (file)
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -278,6 +278,20 @@ void cpu_loop(CPUX86State *env)
         case EXCP_INTERRUPT:
             /* just indicate that signals should be handled asap */
             break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig (env, TARGET_SIGTRAP);
+                if (sig)
+                  {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(info.si_signo, &info);
+                  }
+            }
+            break;
         default:
             pc = env->segs[R_CS].base + env->eip;
             fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", 
@@ -345,13 +359,27 @@ void cpu_loop(CPUARMState *env)
         case EXCP_SWI:
             {
                 /* system call */
-                insn = ldl((void *)(env->regs[15] - 4));
-                n = insn & 0xffffff;
+                if (env->thumb) {
+                    insn = lduw((void *)(env->regs[15] - 2));
+                    n = insn & 0xff;
+                } else {
+                    insn = ldl((void *)(env->regs[15] - 4));
+                    n = insn & 0xffffff;
+                }
+
                 if (n == ARM_NR_cacheflush) {
                     arm_cache_flush(env->regs[0], env->regs[1]);
-                } else if (n >= ARM_SYSCALL_BASE) {
+                } else if (n == ARM_NR_semihosting
+                           || n == ARM_NR_thumb_semihosting) {
+                    env->regs[0] = do_arm_semihosting (env);
+                } else if (n >= ARM_SYSCALL_BASE
+                           || (env->thumb && n == ARM_THUMB_SYSCALL)) {
                     /* linux syscall */
-                    n -= ARM_SYSCALL_BASE;
+                    if (env->thumb) {
+                        n = env->regs[7];
+                    } else {
+                        n -= ARM_SYSCALL_BASE;
+                    }
                     env->regs[0] = do_syscall(env, 
                                               n, 
                                               env->regs[0],
@@ -359,7 +387,7 @@ void cpu_loop(CPUARMState *env)
                                               env->regs[2],
                                               env->regs[3],
                                               env->regs[4],
-                                              0);
+                                              env->regs[5]);
                 } else {
                     goto error;
                 }
@@ -379,6 +407,20 @@ void cpu_loop(CPUARMState *env)
                 queue_signal(info.si_signo, &info);
             }
             break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig (env, TARGET_SIGTRAP);
+                if (sig)
+                  {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(info.si_signo, &info);
+                  }
+            }
+            break;
         default:
         error:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", 
@@ -510,6 +552,7 @@ void cpu_loop (CPUSPARCState *env)
             env->pc = env->npc;
             env->npc = env->npc + 4;
             break;
+#ifndef TARGET_SPARC64
         case TT_WIN_OVF: /* window overflow */
             save_window(env);
             break;
@@ -527,8 +570,25 @@ void cpu_loop (CPUSPARCState *env)
                 queue_signal(info.si_signo, &info);
             }
             break;
+#else
+           // XXX
+#endif
        case 0x100: // XXX, why do we get these?
            break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig (env, TARGET_SIGTRAP);
+                if (sig)
+                  {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(info.si_signo, &info);
+                  }
+            }
+            break;
         default:
             printf ("Unhandled trap: 0x%x\n", trapnr);
             cpu_dump_state(env, stderr, fprintf, 0);
@@ -911,8 +971,20 @@ void cpu_loop(CPUPPCState *env)
         case EXCP_INTERRUPT:
             /* Don't know why this should ever happen... */
             break;
-       case EXCP_DEBUG:
-           break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig (env, TARGET_SIGTRAP);
+                if (sig)
+                  {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(info.si_signo, &info);
+                  }
+            }
+            break;
         default:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", 
                     trapnr);
@@ -930,10 +1002,11 @@ void cpu_loop(CPUPPCState *env)
 void usage(void)
 {
     printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
-           "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
+           "usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] program [arguments...]\n"
            "Linux CPU emulator (compiled for %s emulation)\n"
            "\n"
            "-h           print this help\n"
+           "-g           wait gdb connection to port %d\n"
            "-L path      set the elf interpreter prefix (default=%s)\n"
            "-s size      set the stack size in bytes (default=%ld)\n"
            "\n"
@@ -944,6 +1017,7 @@ void usage(void)
            "-d options   activate log (logfile=%s)\n"
            "-p pagesize  set the host page size to 'pagesize'\n",
            TARGET_ARCH,
+           DEFAULT_GDBSTUB_PORT,
            interp_prefix, 
            x86_stack_size,
            DEBUG_LOGFILE);
@@ -967,6 +1041,7 @@ int main(int argc, char **argv)
     CPUState *env;
     int optind;
     const char *r;
+    int use_gdbstub = 0;
     
     if (argc <= 1)
         usage();
@@ -1020,6 +1095,8 @@ int main(int argc, char **argv)
                 fprintf(stderr, "page size must be a power of two\n");
                 exit(1);
             }
+        } else if (!strcmp(r, "g")) {
+            use_gdbstub = 1;
         } else 
 #ifdef USE_CODE_COPY
         if (!strcmp(r, "no-code-copy")) {
@@ -1148,6 +1225,10 @@ int main(int argc, char **argv)
             env->regs[i] = regs->uregs[i];
         }
         env->cpsr = regs->uregs[16];
+        ts->stack_base = info->start_stack;
+        ts->heap_base = info->brk;
+        /* This will be filled in on the first SYS_HEAPINFO call.  */
+        ts->heap_limit = 0;
     }
 #elif defined(TARGET_SPARC)
     {
@@ -1176,6 +1257,10 @@ int main(int argc, char **argv)
 #error unsupported target CPU
 #endif
 
+    if (use_gdbstub) {
+        gdbserver_start (DEFAULT_GDBSTUB_PORT);
+        gdb_handlesig(env, 0);
+    }
     cpu_loop(env);
     /* never exits */
     return 0;