motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-27 12:23:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

Integrate Alpha target in Qemu core.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2601 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-04-05 07:22:49 +00:00
parent 7a3148a955
commit eddf68a6ac
8 changed files with 92 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

71
cpu-exec.c
View file

@ -40,7 +40,8 @@ int tb_invalidated_flag;
//#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 @@ static inline TranslationBlock *tb_find_fast(void)
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 @@ int cpu_exec(CPUState *env1)
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 @@ int cpu_exec(CPUState *env1)
#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 @@ int cpu_exec(CPUState *env1)
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 @@ int cpu_exec(CPUState *env1)
}
#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 @@ int cpu_exec(CPUState *env1)
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 @@ int cpu_exec(CPUState *env1)
| 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 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
/* 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