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authorj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-04-05 07:22:49 +0000
committerj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-04-05 07:22:49 +0000
commiteddf68a6ac4b5ca6eb1efbb69e50d04878a87aa5 (patch)
treecb9274a4ae66c75bf7f7a6eee973e08ebfcc611e
parentPreliminary patch for Alpha Linux user mode emulation support. (diff)
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Integrate Alpha target in Qemu core.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2601 c046a42c-6fe2-441c-8c8c-71466251a162
-rw-r--r--cpu-all.h7
-rw-r--r--cpu-exec.c71
-rw-r--r--dis-asm.h2
-rw-r--r--disas.c3
-rw-r--r--exec-all.h2
-rw-r--r--softmmu_header.h4
-rw-r--r--translate-all.c2
-rw-r--r--vl.c2
8 files changed, 92 insertions, 1 deletions
diff --git a/cpu-all.h b/cpu-all.h
index 08d42188a..d2382857a 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -748,6 +748,13 @@ void page_unprotect_range(target_ulong data, target_ulong data_size);
#define cpu_gen_code cpu_sh4_gen_code
#define cpu_signal_handler cpu_sh4_signal_handler
+#elif defined(TARGET_ALPHA)
+#define CPUState CPUAlphaState
+#define cpu_init cpu_alpha_init
+#define cpu_exec cpu_alpha_exec
+#define cpu_gen_code cpu_alpha_gen_code
+#define cpu_signal_handler cpu_alpha_signal_handler
+
#else
#error unsupported target CPU
diff --git a/cpu-exec.c b/cpu-exec.c
index 4916b1af6..0eabacd64 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -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
diff --git a/dis-asm.h b/dis-asm.h
index 73b4380b7..2b2f1d1de 100644
--- a/dis-asm.h
+++ b/dis-asm.h
@@ -181,6 +181,7 @@ enum bfd_architecture
#define bfd_mach_sh4al_dsp 0x4d
#define bfd_mach_sh5 0x50
bfd_arch_alpha, /* Dec Alpha */
+#define bfd_mach_alpha 1
bfd_arch_arm, /* Advanced Risc Machines ARM */
#define bfd_mach_arm_2 1
#define bfd_mach_arm_2a 2
@@ -377,6 +378,7 @@ extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
extern int print_insn_ppc PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
#if 0
/* Fetch the disassembler for a given BFD, if that support is available. */
diff --git a/disas.c b/disas.c
index 297992798..c583c1d4d 100644
--- a/disas.c
+++ b/disas.c
@@ -197,6 +197,9 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
#elif defined(TARGET_SH4)
disasm_info.mach = bfd_mach_sh4;
print_insn = print_insn_sh;
+#elif defined(TARGET_ALPHA)
+ disasm_info.mach = bfd_mach_alpha;
+ print_insn = print_insn_alpha;
#else
fprintf(out, "0x" TARGET_FMT_lx
": Asm output not supported on this arch\n", code);
diff --git a/exec-all.h b/exec-all.h
index 73b85436c..cb8936a69 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -572,6 +572,8 @@ static inline target_ulong get_phys_addr_code(CPUState *env, target_ulong addr)
is_user = ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR);
#elif defined (TARGET_SH4)
is_user = ((env->sr & SR_MD) == 0);
+#elif defined (TARGET_ALPHA)
+ is_user = ((env->ps >> 3) & 3);
#else
#error unimplemented CPU
#endif
diff --git a/softmmu_header.h b/softmmu_header.h
index d5b3debc7..8c6cf74ad 100644
--- a/softmmu_header.h
+++ b/softmmu_header.h
@@ -63,6 +63,8 @@
#define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
#elif defined (TARGET_SH4)
#define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
+#elif defined (TARGET_ALPHA)
+#define CPU_MEM_INDEX ((env->ps >> 3) & 3)
#else
#error unsupported CPU
#endif
@@ -82,6 +84,8 @@
#define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
#elif defined (TARGET_SH4)
#define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
+#elif defined (TARGET_ALPHA)
+#define CPU_MEM_INDEX ((env->ps >> 3) & 3)
#else
#error unsupported CPU
#endif
diff --git a/translate-all.c b/translate-all.c
index 43365478b..491b3b3d3 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -308,6 +308,8 @@ int cpu_restore_state(TranslationBlock *tb,
env->PC = gen_opc_pc[j];
env->hflags &= ~MIPS_HFLAG_BMASK;
env->hflags |= gen_opc_hflags[j];
+#elif defined(TARGET_ALPHA)
+ env->pc = gen_opc_pc[j];
#endif
return 0;
}
diff --git a/vl.c b/vl.c
index 487c4a8d9..355f7ff82 100644
--- a/vl.c
+++ b/vl.c
@@ -6707,6 +6707,8 @@ void register_machines(void)
qemu_register_machine(&realview_machine);
#elif defined(TARGET_SH4)
qemu_register_machine(&shix_machine);
+#elif defined(TARGET_ALPHA)
+ /* XXX: TODO */
#else
#error unsupported CPU
#endif