mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2025-01-11 10:35:29 +00:00
cpu-exec: move cpu_exec to the bottom of the file
Remove forward declarations
This commit is contained in:
Lioncash
parent
0088ca994f
commit
88d00a75ca
334
qemu/cpu-exec.c
334
qemu/cpu-exec.c
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@ -27,13 +27,168 @@
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#include "uc_priv.h"
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static tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb);
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static TranslationBlock *tb_find_slow(CPUState *cpu, target_ulong pc,
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target_ulong cs_base, uint64_t flags);
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static TranslationBlock *tb_find_fast(CPUState *cpu,
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TranslationBlock **last_tb,
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int tb_exit);
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static void cpu_handle_debug_exception(CPUState *cpu);
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/* Execute a TB, and fix up the CPU state afterwards if necessary */
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static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb)
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{
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CPUArchState *env = cpu->env_ptr;
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TCGContext *tcg_ctx = env->uc->tcg_ctx;
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uintptr_t ret;
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TranslationBlock *last_tb;
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int tb_exit;
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uint8_t *tb_ptr = itb->tc_ptr;
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// Unicorn: commented out
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//qemu_log_mask_and_addr(CPU_LOG_EXEC, itb->pc,
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// "Trace %p [" TARGET_FMT_lx "] %s\n",
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// itb->tc_ptr, itb->pc, lookup_symbol(itb->pc));
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ret = tcg_qemu_tb_exec(env, tb_ptr);
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last_tb = (TranslationBlock *)(ret & ~TB_EXIT_MASK);
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tb_exit = ret & TB_EXIT_MASK;
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//trace_exec_tb_exit(last_tb, tb_exit);
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if (tb_exit > TB_EXIT_IDX1) {
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/* We didn't start executing this TB (eg because the instruction
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* counter hit zero); we must restore the guest PC to the address
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* of the start of the TB.
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*/
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CPUClass *cc = CPU_GET_CLASS(env->uc, cpu);
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// Unicorn: commented out
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//qemu_log_mask_and_addr(CPU_LOG_EXEC, last_tb->pc,
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// "Stopped execution of TB chain before %p ["
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// TARGET_FMT_lx "] %s\n",
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// last_tb->tc_ptr, last_tb->pc,
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// lookup_symbol(last_tb->pc));
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if (cc->synchronize_from_tb) {
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// avoid sync twice when helper_uc_tracecode() already did this.
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if (env->uc->emu_counter <= env->uc->emu_count &&
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!env->uc->stop_request && !env->uc->quit_request) {
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cc->synchronize_from_tb(cpu, last_tb);
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}
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} else {
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assert(cc->set_pc);
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// avoid sync twice when helper_uc_tracecode() already did this.
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if (env->uc->emu_counter <= env->uc->emu_count && !env->uc->quit_request) {
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cc->set_pc(cpu, last_tb->pc);
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}
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}
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}
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if (tb_exit == TB_EXIT_REQUESTED) {
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/* We were asked to stop executing TBs (probably a pending
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* interrupt. We've now stopped, so clear the flag.
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*/
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cpu->tcg_exit_req = 0;
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}
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return ret;
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}
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static TranslationBlock *tb_find_slow(CPUState *cpu,
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target_ulong pc,
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target_ulong cs_base,
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uint64_t flags)
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{
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CPUArchState *env = (CPUArchState *)cpu->env_ptr;
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TCGContext *tcg_ctx = env->uc->tcg_ctx;
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TranslationBlock *tb, **ptb1;
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unsigned int h;
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tb_page_addr_t phys_pc, phys_page1;
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target_ulong virt_page2;
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/* find translated block using physical mappings */
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phys_pc = get_page_addr_code(env, pc); // qq
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if (phys_pc == -1) { // invalid code?
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return NULL;
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}
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phys_page1 = phys_pc & TARGET_PAGE_MASK;
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h = tb_phys_hash_func(phys_pc);
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ptb1 = &tcg_ctx->tb_ctx.tb_phys_hash[h];
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for(;;) {
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tb = *ptb1;
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if (!tb)
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goto not_found;
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if (tb->pc == pc &&
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tb->page_addr[0] == phys_page1 &&
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tb->cs_base == cs_base &&
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tb->flags == flags) {
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/* check next page if needed */
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if (tb->page_addr[1] != -1) {
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tb_page_addr_t phys_page2;
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virt_page2 = (pc & TARGET_PAGE_MASK) +
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TARGET_PAGE_SIZE;
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phys_page2 = get_page_addr_code(env, virt_page2);
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if (tb->page_addr[1] == phys_page2)
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goto found;
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} else {
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goto found;
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}
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}
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ptb1 = &tb->phys_hash_next;
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}
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not_found:
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/* if no translated code available, then translate it now */
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tb = tb_gen_code(cpu, pc, cs_base, (int)flags, 0); // qq
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found:
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/* Move the last found TB to the head of the list */
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if (likely(*ptb1)) {
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*ptb1 = tb->phys_hash_next;
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tb->phys_hash_next = tcg_ctx->tb_ctx.tb_phys_hash[h];
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tcg_ctx->tb_ctx.tb_phys_hash[h] = tb;
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}
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/* we add the TB in the virtual pc hash table */
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cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
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return tb;
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}
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static inline TranslationBlock *tb_find_fast(CPUState *cpu,
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TranslationBlock **last_tb,
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int tb_exit)
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{
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CPUArchState *env = (CPUArchState *)cpu->env_ptr;
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TranslationBlock *tb;
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target_ulong cs_base, pc;
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uint32_t flags;
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/* we record a subset of the CPU state. It will
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always be the same before a given translated block
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is executed. */
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cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
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// Unicorn: commented out
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//tb_lock();
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tb = cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
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if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base ||
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tb->flags != flags)) {
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tb = tb_find_slow(cpu, pc, cs_base, flags); // qq
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}
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if (cpu->tb_flushed) {
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/* Ensure that no TB jump will be modified as the
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* translation buffer has been flushed.
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*/
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*last_tb = NULL;
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cpu->tb_flushed = false;
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}
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/* See if we can patch the calling TB. */
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if (*last_tb && !qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
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tb_add_jump(*last_tb, tb_exit, tb);
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}
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// Unicorn: commented out
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//tb_unlock();
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return tb;
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}
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static void cpu_handle_debug_exception(CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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CPUWatchpoint *wp;
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if (!cpu->watchpoint_hit) {
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QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
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wp->flags &= ~BP_WATCHPOINT_HIT;
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}
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}
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cc->debug_excp_handler(cpu);
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}
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/* main execution loop */
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@ -76,7 +231,7 @@ int cpu_exec(struct uc_struct *uc, CPUState *cpu)
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/* if an exception is pending, we execute it here */
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if (cpu->exception_index >= 0) {
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//printf(">>> GOT INTERRUPT. exception idx = %x\n", cpu->exception_index); // qq
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//printf(">>> GOT INTERRUPT. exception idx = %x\n", cpu->exception_index); // qq
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if (uc->stop_interrupt && uc->stop_interrupt(cpu->exception_index)) {
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cpu->halted = 1;
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uc->invalid_error = UC_ERR_INSN_INVALID;
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@ -254,166 +409,3 @@ int cpu_exec(struct uc_struct *uc, CPUState *cpu)
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atomic_set(&uc->tcg_current_cpu, NULL);
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return ret;
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}
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/* Execute a TB, and fix up the CPU state afterwards if necessary */
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static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb)
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{
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CPUArchState *env = cpu->env_ptr;
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TCGContext *tcg_ctx = env->uc->tcg_ctx;
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uintptr_t ret;
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TranslationBlock *last_tb;
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int tb_exit;
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uint8_t *tb_ptr = itb->tc_ptr;
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// Unicorn: commented out
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//qemu_log_mask_and_addr(CPU_LOG_EXEC, itb->pc,
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// "Trace %p [" TARGET_FMT_lx "] %s\n",
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// itb->tc_ptr, itb->pc, lookup_symbol(itb->pc));
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ret = tcg_qemu_tb_exec(env, tb_ptr);
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last_tb = (TranslationBlock *)(ret & ~TB_EXIT_MASK);
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tb_exit = ret & TB_EXIT_MASK;
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//trace_exec_tb_exit(last_tb, tb_exit);
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if (tb_exit > TB_EXIT_IDX1) {
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/* We didn't start executing this TB (eg because the instruction
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* counter hit zero); we must restore the guest PC to the address
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* of the start of the TB.
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*/
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CPUClass *cc = CPU_GET_CLASS(env->uc, cpu);
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// Unicorn: commented out
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//qemu_log_mask_and_addr(CPU_LOG_EXEC, last_tb->pc,
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// "Stopped execution of TB chain before %p ["
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// TARGET_FMT_lx "] %s\n",
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// last_tb->tc_ptr, last_tb->pc,
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// lookup_symbol(last_tb->pc));
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if (cc->synchronize_from_tb) {
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// avoid sync twice when helper_uc_tracecode() already did this.
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if (env->uc->emu_counter <= env->uc->emu_count &&
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!env->uc->stop_request && !env->uc->quit_request) {
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cc->synchronize_from_tb(cpu, last_tb);
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}
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} else {
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assert(cc->set_pc);
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// avoid sync twice when helper_uc_tracecode() already did this.
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if (env->uc->emu_counter <= env->uc->emu_count && !env->uc->quit_request) {
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cc->set_pc(cpu, last_tb->pc);
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}
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}
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}
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if (tb_exit == TB_EXIT_REQUESTED) {
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/* We were asked to stop executing TBs (probably a pending
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* interrupt. We've now stopped, so clear the flag.
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*/
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cpu->tcg_exit_req = 0;
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}
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return ret;
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}
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static TranslationBlock *tb_find_slow(CPUState *cpu,
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target_ulong pc,
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target_ulong cs_base,
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uint64_t flags)
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{
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CPUArchState *env = (CPUArchState *)cpu->env_ptr;
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TCGContext *tcg_ctx = env->uc->tcg_ctx;
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TranslationBlock *tb, **ptb1;
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unsigned int h;
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tb_page_addr_t phys_pc, phys_page1;
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target_ulong virt_page2;
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/* find translated block using physical mappings */
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phys_pc = get_page_addr_code(env, pc); // qq
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if (phys_pc == -1) { // invalid code?
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return NULL;
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}
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phys_page1 = phys_pc & TARGET_PAGE_MASK;
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h = tb_phys_hash_func(phys_pc);
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ptb1 = &tcg_ctx->tb_ctx.tb_phys_hash[h];
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for(;;) {
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tb = *ptb1;
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if (!tb)
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goto not_found;
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if (tb->pc == pc &&
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tb->page_addr[0] == phys_page1 &&
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tb->cs_base == cs_base &&
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tb->flags == flags) {
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/* check next page if needed */
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if (tb->page_addr[1] != -1) {
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tb_page_addr_t phys_page2;
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virt_page2 = (pc & TARGET_PAGE_MASK) +
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TARGET_PAGE_SIZE;
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phys_page2 = get_page_addr_code(env, virt_page2);
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if (tb->page_addr[1] == phys_page2)
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goto found;
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} else {
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goto found;
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}
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}
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ptb1 = &tb->phys_hash_next;
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}
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not_found:
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/* if no translated code available, then translate it now */
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tb = tb_gen_code(cpu, pc, cs_base, (int)flags, 0); // qq
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found:
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/* Move the last found TB to the head of the list */
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if (likely(*ptb1)) {
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*ptb1 = tb->phys_hash_next;
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tb->phys_hash_next = tcg_ctx->tb_ctx.tb_phys_hash[h];
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tcg_ctx->tb_ctx.tb_phys_hash[h] = tb;
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}
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/* we add the TB in the virtual pc hash table */
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cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
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return tb;
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}
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static inline TranslationBlock *tb_find_fast(CPUState *cpu,
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TranslationBlock **last_tb,
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int tb_exit)
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{
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CPUArchState *env = (CPUArchState *)cpu->env_ptr;
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TranslationBlock *tb;
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target_ulong cs_base, pc;
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uint32_t flags;
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/* we record a subset of the CPU state. It will
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always be the same before a given translated block
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is executed. */
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cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
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// Unicorn: commented out
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//tb_lock();
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tb = cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
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if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base ||
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tb->flags != flags)) {
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tb = tb_find_slow(cpu, pc, cs_base, flags); // qq
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}
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if (cpu->tb_flushed) {
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/* Ensure that no TB jump will be modified as the
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* translation buffer has been flushed.
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*/
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*last_tb = NULL;
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cpu->tb_flushed = false;
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}
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/* See if we can patch the calling TB. */
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if (*last_tb && !qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
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tb_add_jump(*last_tb, tb_exit, tb);
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}
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// Unicorn: commented out
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//tb_unlock();
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return tb;
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}
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static void cpu_handle_debug_exception(CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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CPUWatchpoint *wp;
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if (!cpu->watchpoint_hit) {
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QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
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wp->flags &= ~BP_WATCHPOINT_HIT;
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}
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}
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cc->debug_excp_handler(cpu);
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}
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