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accel/tcg: Move helper_lookup_tb_ptr to cpu-exec.c

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This will allow additional code sharing.
No functional change.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-29 12:28:29 -07:00
parent 50b208b848
commit 4288eb26a0
2 changed files with 30 additions and 22 deletions
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30
accel/tcg/cpu-exec.c
View File

@ -38,6 +38,7 @@
#include "exec/cpu-all.h"
#include "sysemu/cpu-timers.h"
#include "sysemu/replay.h"
#include "exec/helper-proto.h"
#include "tb-hash.h"
#include "tb-lookup.h"
#include "tb-context.h"
@ -145,6 +146,35 @@ static void init_delay_params(SyncClocks *sc, const CPUState *cpu)
}
#endif /* CONFIG USER ONLY */
/**
* helper_lookup_tb_ptr: quick check for next tb
* @env: current cpu state
*
* Look for an existing TB matching the current cpu state.
* If found, return the code pointer. If not found, return
* the tcg epilogue so that we return into cpu_tb_exec.
*/
const void *HELPER(lookup_tb_ptr)(CPUArchState *env)
{
CPUState *cpu = env_cpu(env);
TranslationBlock *tb;
target_ulong cs_base, pc;
uint32_t flags;
cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
tb = tb_lookup(cpu, pc, cs_base, flags, curr_cflags(cpu));
if (tb == NULL) {
return tcg_code_gen_epilogue;
}
qemu_log_mask_and_addr(CPU_LOG_EXEC, pc,
"Chain %d: %p ["
TARGET_FMT_lx "/" TARGET_FMT_lx "/%#x] %s\n",
cpu->cpu_index, tb->tc.ptr, cs_base, pc, flags,
lookup_symbol(pc));
return tb->tc.ptr;
}
/* Execute a TB, and fix up the CPU state afterwards if necessary */
/*
* Disable CFI checks.

22
accel/tcg/tcg-runtime.c
View File

@ -30,7 +30,6 @@
#include "disas/disas.h"
#include "exec/log.h"
#include "tcg/tcg.h"
#include "tb-lookup.h"
/* 32-bit helpers */
@ -145,27 +144,6 @@ uint64_t HELPER(ctpop_i64)(uint64_t arg)
return ctpop64(arg);
}
const void *HELPER(lookup_tb_ptr)(CPUArchState *env)
{
CPUState *cpu = env_cpu(env);
TranslationBlock *tb;
target_ulong cs_base, pc;
uint32_t flags;
cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
tb = tb_lookup(cpu, pc, cs_base, flags, curr_cflags(cpu));
if (tb == NULL) {
return tcg_code_gen_epilogue;
}
qemu_log_mask_and_addr(CPU_LOG_EXEC, pc,
"Chain %d: %p ["
TARGET_FMT_lx "/" TARGET_FMT_lx "/%#x] %s\n",
cpu->cpu_index, tb->tc.ptr, cs_base, pc, flags,
lookup_symbol(pc));
return tb->tc.ptr;
}
void HELPER(exit_atomic)(CPUArchState *env)
{
cpu_loop_exit_atomic(env_cpu(env), GETPC());