sh4 target (Samuel Tardieu)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1861 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 63 insertions, 0 deletions

diff --git a/cpu-exec.c b/cpu-exec.c
index ca46953..8a585c1 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -190,6 +190,10 @@ static inline TranslationBlock *tb_find_fast(void)
     flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK);
     cs_base = 0;
     pc = env->PC;
+#elif defined(TARGET_SH4)
+    flags = env->sr & (SR_MD | SR_RB);
+    cs_base = 0;         /* XXXXX */
+    pc = env->pc;
 #else
 #error unsupported CPU
 #endif
@@ -363,6 +367,8 @@ int cpu_exec(CPUState *env1)
 #endif
 #elif defined(TARGET_PPC)
 #elif defined(TARGET_MIPS)
+#elif defined(TARGET_SH4)
+    /* XXXXX */
 #else
 #error unsupported target CPU
 #endif
@@ -407,6 +413,8 @@ int cpu_exec(CPUState *env1)
                     do_interrupt(env->exception_index);
 #elif defined(TARGET_ARM)
                     do_interrupt(env);
+#elif defined(TARGET_SH4)
+		    do_interrupt(env);
 #endif
                 }
                 env->exception_index = -1;
@@ -550,6 +558,8 @@ int cpu_exec(CPUState *env1)
                         env->exception_index = EXCP_IRQ;
                         do_interrupt(env);
                     }
+#elif defined(TARGET_SH4)
+		    /* XXXXX */
 #endif
                     if (env->interrupt_request & CPU_INTERRUPT_EXITTB) {
                         env->interrupt_request &= ~CPU_INTERRUPT_EXITTB;
@@ -608,6 +618,8 @@ int cpu_exec(CPUState *env1)
                     cpu_dump_state(env, logfile, fprintf, 0);
 #elif defined(TARGET_MIPS)
                     cpu_dump_state(env, logfile, fprintf, 0);
+#elif defined(TARGET_SH4)
+		    cpu_dump_state(env, logfile, fprintf, 0);
 #else
 #error unsupported target CPU 
 #endif
@@ -817,6 +829,8 @@ int cpu_exec(CPUState *env1)
 #endif
 #elif defined(TARGET_PPC)
 #elif defined(TARGET_MIPS)
+#elif defined(TARGET_SH4)
+    /* XXXXX */
 #else
 #error unsupported target CPU
 #endif
@@ -1121,6 +1135,55 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
     return 1;
 }
 
+#elif defined (TARGET_SH4)
+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_sh4_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 (ret == 1) {
+#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);
+        //        do_raise_exception_err(env->exception_index, env->error_code);
+    } else {
+        /* activate soft MMU for this block */
+        cpu_resume_from_signal(env, puc);
+    }
+    /* never comes here */
+    return 1;
+}
 #else
 #error unsupported target CPU
 #endif