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accel/tcg: Use cpu_ld*_code_mmu in translator.c

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Cache the mmu index in DisasContextBase.
Perform the read on host endianness, which lets us
share code with the translator_ld fast path.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2025-04-23 14:08:17 -07:00
parent 6a9dfe1984
commit 028119c8ba
2 changed files with 28 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files
accel/tcg/translator.c
+27 -31
View File
@@ -11,10 +11,10 @@
#include "qemu/log.h"
#include "qemu/error-report.h"
#include "exec/exec-all.h"
#include "exec/cpu-ldst-common.h"
#include "accel/tcg/cpu-mmu-index.h"
#include "exec/translator.h"
#include "exec/cpu_ldst.h"
#include "exec/plugin-gen.h"
#include "exec/cpu_ldst.h"
#include "exec/tswap.h"
#include "tcg/tcg-op-common.h"
#include "internal-target.h"
@@ -142,6 +142,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
db->host_addr[1] = NULL;
db->record_start = 0;
db->record_len = 0;
db->code_mmuidx = cpu_mmu_index(cpu, true);
ops->init_disas_context(db, cpu);
tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */
@@ -457,55 +458,50 @@ bool translator_st(const DisasContextBase *db, void *dest,
uint8_t translator_ldub(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
uint8_t raw;
uint8_t val;
if (!translator_ld(env, db, &raw, pc, sizeof(raw))) {
raw = cpu_ldub_code(env, pc);
record_save(db, pc, &raw, sizeof(raw));
if (!translator_ld(env, db, &val, pc, sizeof(val))) {
MemOpIdx oi = make_memop_idx(MO_UB, db->code_mmuidx);
val = cpu_ldb_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return raw;
return val;
}
uint16_t translator_lduw(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
uint16_t raw, tgt;
uint16_t val;
if (translator_ld(env, db, &raw, pc, sizeof(raw))) {
tgt = tswap16(raw);
} else {
tgt = cpu_lduw_code(env, pc);
raw = tswap16(tgt);
record_save(db, pc, &raw, sizeof(raw));
if (!translator_ld(env, db, &val, pc, sizeof(val))) {
MemOpIdx oi = make_memop_idx(MO_UW, db->code_mmuidx);
val = cpu_ldw_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tgt;
return tswap16(val);
}
uint32_t translator_ldl(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
uint32_t raw, tgt;
uint32_t val;
if (translator_ld(env, db, &raw, pc, sizeof(raw))) {
tgt = tswap32(raw);
} else {
tgt = cpu_ldl_code(env, pc);
raw = tswap32(tgt);
record_save(db, pc, &raw, sizeof(raw));
if (!translator_ld(env, db, &val, pc, sizeof(val))) {
MemOpIdx oi = make_memop_idx(MO_UL, db->code_mmuidx);
val = cpu_ldl_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tgt;
return tswap32(val);
}
uint64_t translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
uint64_t raw, tgt;
uint64_t val;
if (translator_ld(env, db, &raw, pc, sizeof(raw))) {
tgt = tswap64(raw);
} else {
tgt = cpu_ldq_code(env, pc);
raw = tswap64(tgt);
record_save(db, pc, &raw, sizeof(raw));
if (!translator_ld(env, db, &val, pc, sizeof(val))) {
MemOpIdx oi = make_memop_idx(MO_UQ, db->code_mmuidx);
val = cpu_ldq_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tgt;
return tswap64(val);
}
void translator_fake_ld(DisasContextBase *db, const void *data, size_t len)
include/exec/translator.h
+1
View File
@@ -73,6 +73,7 @@ struct DisasContextBase {
int max_insns;
bool plugin_enabled;
bool fake_insn;
uint8_t code_mmuidx;
struct TCGOp *insn_start;
void *host_addr[2];