Integrate Alpha target in Qemu core.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2601 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/cpu-exec.c b/cpu-exec.c
index 4916b1a..0eabacd 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -40,7 +40,8 @@
//#define DEBUG_EXEC
//#define DEBUG_SIGNAL
-#if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_M68K)
+#if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_M68K) || \
+ defined(TARGET_ALPHA)
/* XXX: unify with i386 target */
void cpu_loop_exit(void)
{
@@ -202,6 +203,10 @@
flags = env->sr & (SR_MD | SR_RB);
cs_base = 0; /* XXXXX */
pc = env->pc;
+#elif defined(TARGET_ALPHA)
+ flags = env->ps;
+ cs_base = 0;
+ pc = env->pc;
#else
#error unsupported CPU
#endif
@@ -291,6 +296,14 @@
return EXCP_HALTED;
}
}
+#elif defined(TARGET_ALPHA)
+ if (env1->halted) {
+ if (env1->interrupt_request & CPU_INTERRUPT_HARD) {
+ env1->halted = 0;
+ } else {
+ return EXCP_HALTED;
+ }
+ }
#endif
cpu_single_env = env1;
@@ -324,6 +337,8 @@
#elif defined(TARGET_MIPS)
#elif defined(TARGET_SH4)
/* XXXXX */
+#elif defined(TARGET_ALPHA)
+ env_to_regs();
#else
#error unsupported target CPU
#endif
@@ -372,6 +387,8 @@
do_interrupt(env);
#elif defined(TARGET_SH4)
do_interrupt(env);
+#elif defined(TARGET_ALPHA)
+ do_interrupt(env);
#endif
}
env->exception_index = -1;
@@ -518,6 +535,10 @@
}
#elif defined(TARGET_SH4)
/* XXXXX */
+#elif defined(TARGET_ALPHA)
+ if (interrupt_request & CPU_INTERRUPT_HARD) {
+ do_interrupt(env);
+ }
#endif
/* Don't use the cached interupt_request value,
do_interrupt may have updated the EXITTB flag. */
@@ -586,6 +607,8 @@
cpu_dump_state(env, logfile, fprintf, 0);
#elif defined(TARGET_SH4)
cpu_dump_state(env, logfile, fprintf, 0);
+#elif defined(TARGET_ALPHA)
+ cpu_dump_state(env, logfile, fprintf, 0);
#else
#error unsupported target CPU
#endif
@@ -778,6 +801,7 @@
| env->cc_dest | (env->cc_x << 4);
#elif defined(TARGET_MIPS)
#elif defined(TARGET_SH4)
+#elif defined(TARGET_ALPHA)
/* XXXXX */
#else
#error unsupported target CPU
@@ -1164,6 +1188,51 @@
/* never comes here */
return 1;
}
+
+#elif defined (TARGET_ALPHA)
+static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
+ int is_write, sigset_t *old_set,
+ void *puc)
+{
+ TranslationBlock *tb;
+ int ret;
+
+ if (cpu_single_env)
+ env = cpu_single_env; /* XXX: find a correct solution for multithread */
+#if defined(DEBUG_SIGNAL)
+ printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
+ pc, address, is_write, *(unsigned long *)old_set);
+#endif
+ /* XXX: locking issue */
+ if (is_write && page_unprotect(h2g(address), pc, puc)) {
+ return 1;
+ }
+
+ /* see if it is an MMU fault */
+ ret = cpu_alpha_handle_mmu_fault(env, address, is_write, 1, 0);
+ if (ret < 0)
+ return 0; /* not an MMU fault */
+ if (ret == 0)
+ return 1; /* the MMU fault was handled without causing real CPU fault */
+
+ /* now we have a real cpu fault */
+ tb = tb_find_pc(pc);
+ if (tb) {
+ /* the PC is inside the translated code. It means that we have
+ a virtual CPU fault */
+ cpu_restore_state(tb, env, pc, puc);
+ }
+#if 0
+ printf("PF exception: NIP=0x%08x error=0x%x %p\n",
+ env->nip, env->error_code, tb);
+#endif
+ /* we restore the process signal mask as the sigreturn should
+ do it (XXX: use sigsetjmp) */
+ sigprocmask(SIG_SETMASK, old_set, NULL);
+ cpu_loop_exit();
+ /* never comes here */
+ return 1;
+}
#else
#error unsupported target CPU
#endif
