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accel/tcg: Implement translator_ld*_end

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Add a new family of translator load functions which take
an absolute endianness value in the form of MO_BE/MO_LE.
Expand the other translator_ld* functions on top of this.
Remove exec/tswap.h from translator.c.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-03-12 06:04:13 -07:00
parent 028119c8ba
commit 5c43a750b6
2 changed files with 49 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

26
accel/tcg/translator.c
View file

@ -8,6 +8,7 @@
*/
#include "qemu/osdep.h"
#include "qemu/bswap.h"
#include "qemu/log.h"
#include "qemu/error-report.h"
#include "exec/exec-all.h"
@ -15,7 +16,6 @@
#include "accel/tcg/cpu-mmu-index.h"
#include "exec/translator.h"
#include "exec/plugin-gen.h"
#include "exec/tswap.h"
#include "tcg/tcg-op-common.h"
#include "internal-target.h"
#include "disas/disas.h"
@ -468,7 +468,8 @@ uint8_t translator_ldub(CPUArchState *env, DisasContextBase *db, vaddr pc)
return val;
}
uint16_t translator_lduw(CPUArchState *env, DisasContextBase *db, vaddr pc)
uint16_t translator_lduw_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian)
{
uint16_t val;
@ -477,10 +478,14 @@ uint16_t translator_lduw(CPUArchState *env, DisasContextBase *db, vaddr pc)
val = cpu_ldw_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tswap16(val);
if (endian & MO_BSWAP) {
val = bswap16(val);
}
return val;
}
uint32_t translator_ldl(CPUArchState *env, DisasContextBase *db, vaddr pc)
uint32_t translator_ldl_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian)
{
uint32_t val;
@ -489,10 +494,14 @@ uint32_t translator_ldl(CPUArchState *env, DisasContextBase *db, vaddr pc)
val = cpu_ldl_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tswap32(val);
if (endian & MO_BSWAP) {
val = bswap32(val);
}
return val;
}
uint64_t translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc)
uint64_t translator_ldq_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian)
{
uint64_t val;
@ -501,7 +510,10 @@ uint64_t translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc)
val = cpu_ldq_code_mmu(env, pc, oi, 0);
record_save(db, pc, &val, sizeof(val));
}
return tswap64(val);
if (endian & MO_BSWAP) {
val = bswap64(val);
}
return val;
}
void translator_fake_ld(DisasContextBase *db, const void *data, size_t len)

49
include/exec/translator.h
View file

@ -18,7 +18,7 @@
* member in your target-specific DisasContext.
*/
#include "qemu/bswap.h"
#include "exec/memop.h"
#include "exec/vaddr.h"
/**
@ -181,42 +181,53 @@ bool translator_io_start(DisasContextBase *db);
*/
uint8_t translator_ldub(CPUArchState *env, DisasContextBase *db, vaddr pc);
uint16_t translator_lduw(CPUArchState *env, DisasContextBase *db, vaddr pc);
uint32_t translator_ldl(CPUArchState *env, DisasContextBase *db, vaddr pc);
uint64_t translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc);
uint16_t translator_lduw_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian);
uint32_t translator_ldl_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian);
uint64_t translator_ldq_end(CPUArchState *env, DisasContextBase *db,
vaddr pc, MemOp endian);
#ifdef COMPILING_PER_TARGET
static inline uint16_t
translator_lduw(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
return translator_lduw_end(env, db, pc, MO_TE);
}
static inline uint32_t
translator_ldl(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
return translator_ldl_end(env, db, pc, MO_TE);
}
static inline uint64_t
translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc)
{
return translator_ldq_end(env, db, pc, MO_TE);
}
static inline uint16_t
translator_lduw_swap(CPUArchState *env, DisasContextBase *db,
vaddr pc, bool do_swap)
{
uint16_t ret = translator_lduw(env, db, pc);
if (do_swap) {
ret = bswap16(ret);
}
return ret;
return translator_lduw_end(env, db, pc, MO_TE ^ (do_swap * MO_BSWAP));
}
static inline uint32_t
translator_ldl_swap(CPUArchState *env, DisasContextBase *db,
vaddr pc, bool do_swap)
{
uint32_t ret = translator_ldl(env, db, pc);
if (do_swap) {
ret = bswap32(ret);
}
return ret;
return translator_ldl_end(env, db, pc, MO_TE ^ (do_swap * MO_BSWAP));
}
static inline uint64_t
translator_ldq_swap(CPUArchState *env, DisasContextBase *db,
vaddr pc, bool do_swap)
{
uint64_t ret = translator_ldq(env, db, pc);
if (do_swap) {
ret = bswap64(ret);
}
return ret;
return translator_ldq_end(env, db, pc, MO_TE ^ (do_swap * MO_BSWAP));
}
#endif /* COMPILING_PER_TARGET */
/**
* translator_fake_ld - fake instruction load