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tcg: Merge cpu_gen_code into tb_gen_code

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As it's only caller, this tidies things a bit.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2015-08-27 18:17:40 -07:00
parent a3d5ad761c
commit fec88f64bd
2 changed files with 59 additions and 74 deletions
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2
include/exec/exec-all.h
View file

@ -78,8 +78,6 @@ void restore_state_to_opc(CPUArchState *env, struct TranslationBlock *tb,
int pc_pos);
void cpu_gen_init(void);
int cpu_gen_code(CPUArchState *env, struct TranslationBlock *tb,
int *gen_code_size_ptr);
bool cpu_restore_state(CPUState *cpu, uintptr_t searched_pc);
void page_size_init(void);

131
translate-all.c
View file

@ -168,73 +168,7 @@ void cpu_gen_init(void)
tcg_context_init(&tcg_ctx);
}
/* return non zero if the very first instruction is invalid so that
* the virtual CPU can trigger an exception.
*
* '*gen_code_size_ptr' contains the size of the generated code (host
* code).
*
* Called with mmap_lock held for user-mode emulation.
*/
int cpu_gen_code(CPUArchState *env, TranslationBlock *tb, int *gen_code_size_ptr)
{
TCGContext *s = &tcg_ctx;
tcg_insn_unit *gen_code_buf;
int gen_code_size;
#ifdef CONFIG_PROFILER
int64_t ti;
#endif
#ifdef CONFIG_PROFILER
s->tb_count1++; /* includes aborted translations because of
exceptions */
ti = profile_getclock();
#endif
tcg_func_start(s);
gen_intermediate_code(env, tb);
trace_translate_block(tb, tb->pc, tb->tc_ptr);
/* generate machine code */
gen_code_buf = tb->tc_ptr;
tb->tb_next_offset[0] = 0xffff;
tb->tb_next_offset[1] = 0xffff;
s->tb_next_offset = tb->tb_next_offset;
#ifdef USE_DIRECT_JUMP
s->tb_jmp_offset = tb->tb_jmp_offset;
s->tb_next = NULL;
#else
s->tb_jmp_offset = NULL;
s->tb_next = tb->tb_next;
#endif
#ifdef CONFIG_PROFILER
s->tb_count++;
s->interm_time += profile_getclock() - ti;
s->code_time -= profile_getclock();
#endif
gen_code_size = tcg_gen_code(s, gen_code_buf);
*gen_code_size_ptr = gen_code_size;
#ifdef CONFIG_PROFILER
s->code_time += profile_getclock();
s->code_in_len += tb->size;
s->code_out_len += gen_code_size;
#endif
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) {
qemu_log("OUT: [size=%d]\n", gen_code_size);
log_disas(tb->tc_ptr, gen_code_size);
qemu_log("\n");
qemu_log_flush();
}
#endif
return 0;
}
/* The cpu state corresponding to 'searched_pc' is restored.
*/
/* The cpu state corresponding to 'searched_pc' is restored. */
static int cpu_restore_state_from_tb(CPUState *cpu, TranslationBlock *tb,
uintptr_t searched_pc)
{
@ -1034,7 +968,11 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
TranslationBlock *tb;
tb_page_addr_t phys_pc, phys_page2;
target_ulong virt_page2;
int code_gen_size;
tcg_insn_unit *gen_code_buf;
int gen_code_size;
#ifdef CONFIG_PROFILER
int64_t ti;
#endif
phys_pc = get_page_addr_code(env, pc);
if (use_icount) {
@ -1049,13 +987,62 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
/* Don't forget to invalidate previous TB info. */
tcg_ctx.tb_ctx.tb_invalidated_flag = 1;
}
tb->tc_ptr = tcg_ctx.code_gen_ptr;
gen_code_buf = tcg_ctx.code_gen_ptr;
tb->tc_ptr = gen_code_buf;
tb->cs_base = cs_base;
tb->flags = flags;
tb->cflags = cflags;
cpu_gen_code(env, tb, &code_gen_size);
tcg_ctx.code_gen_ptr = (void *)(((uintptr_t)tcg_ctx.code_gen_ptr +
code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1));
#ifdef CONFIG_PROFILER
tcg_ctx.tb_count1++; /* includes aborted translations because of
exceptions */
ti = profile_getclock();
#endif
tcg_func_start(&tcg_ctx);
gen_intermediate_code(env, tb);
trace_translate_block(tb, tb->pc, tb->tc_ptr);
/* generate machine code */
tb->tb_next_offset[0] = 0xffff;
tb->tb_next_offset[1] = 0xffff;
tcg_ctx.tb_next_offset = tb->tb_next_offset;
#ifdef USE_DIRECT_JUMP
tcg_ctx.tb_jmp_offset = tb->tb_jmp_offset;
tcg_ctx.tb_next = NULL;
#else
tcg_ctx.tb_jmp_offset = NULL;
tcg_ctx.tb_next = tb->tb_next;
#endif
#ifdef CONFIG_PROFILER
tcg_ctx.tb_count++;
tcg_ctx.interm_time += profile_getclock() - ti;
tcg_ctx.code_time -= profile_getclock();
#endif
gen_code_size = tcg_gen_code(&tcg_ctx, gen_code_buf);
#ifdef CONFIG_PROFILER
tcg_ctx.code_time += profile_getclock();
tcg_ctx.code_in_len += tb->size;
tcg_ctx.code_out_len += gen_code_size;
#endif
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) {
qemu_log("OUT: [size=%d]\n", gen_code_size);
log_disas(tb->tc_ptr, gen_code_size);
qemu_log("\n");
qemu_log_flush();
}
#endif
tcg_ctx.code_gen_ptr = (void *)(((uintptr_t)gen_code_buf +
gen_code_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1));
/* check next page if needed */
virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK;