diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2022-10-17 15:55:56 +1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-01-05 11:41:29 -0800 |
| commit | e2a9dd6b6b50f678b13cfdf55d3997f16c7f96b0 (patch) | |
| tree | 68add6e56ac0bbd958e480efdd9f4a2201e822ab /tcg | |
| parent | eb8b0224fc542120e4071f260d031278ac197155 (diff) | |
tcg: Use TCG_CALL_ARG_EVEN for TCI special case
Change 32-bit tci TCG_TARGET_CALL_ARG_I32 to TCG_CALL_ARG_EVEN, to
force 32-bit values to be aligned to 64-bit. With a small reorg
to the argument processing loop, this neatly replaces an ifdef for
CONFIG_TCG_INTERPRETER.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg.c | 66 | ||||
| -rw-r--r-- | tcg/tci/tcg-target.h | 3 |
2 files changed, 45 insertions, 24 deletions
@@ -1533,36 +1533,56 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) real_args = 0; for (i = 0; i < nargs; i++) { int argtype = extract32(typemask, (i + 1) * 3, 3); - bool is_64bit = (argtype & ~1) == dh_typecode_i64; - bool want_align = false; + TCGCallArgumentKind kind; + TCGType type; -#if defined(CONFIG_TCG_INTERPRETER) - /* - * Align all arguments, so that they land in predictable places - * for passing off to ffi_call. - */ - want_align = true; -#else - /* Some targets want aligned 64 bit args */ - if (is_64bit) { - want_align = TCG_TARGET_CALL_ARG_I64 == TCG_CALL_ARG_EVEN; + switch (argtype) { + case dh_typecode_i32: + case dh_typecode_s32: + type = TCG_TYPE_I32; + break; + case dh_typecode_i64: + case dh_typecode_s64: + type = TCG_TYPE_I64; + break; + case dh_typecode_ptr: + type = TCG_TYPE_PTR; + break; + default: + g_assert_not_reached(); } -#endif - if (TCG_TARGET_REG_BITS < 64 && want_align && (real_args & 1)) { - op->args[pi++] = TCG_CALL_DUMMY_ARG; - real_args++; + switch (type) { + case TCG_TYPE_I32: + kind = TCG_TARGET_CALL_ARG_I32; + break; + case TCG_TYPE_I64: + kind = TCG_TARGET_CALL_ARG_I64; + break; + default: + g_assert_not_reached(); } - if (TCG_TARGET_REG_BITS < 64 && is_64bit) { + switch (kind) { + case TCG_CALL_ARG_EVEN: + if (real_args & 1) { + op->args[pi++] = TCG_CALL_DUMMY_ARG; + real_args++; + } + /* fall through */ + case TCG_CALL_ARG_NORMAL: + if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) { + op->args[pi++] = temp_arg(args[i]); + op->args[pi++] = temp_arg(args[i] + 1); + real_args += 2; + break; + } op->args[pi++] = temp_arg(args[i]); - op->args[pi++] = temp_arg(args[i] + 1); - real_args += 2; - continue; + real_args++; + break; + default: + g_assert_not_reached(); } - - op->args[pi++] = temp_arg(args[i]); - real_args++; } op->args[pi++] = (uintptr_t)func; op->args[pi++] = (uintptr_t)info; diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h index d6e0450ed8..94ec541b4e 100644 --- a/tcg/tci/tcg-target.h +++ b/tcg/tci/tcg-target.h @@ -158,10 +158,11 @@ typedef enum { /* Used for function call generation. */ #define TCG_TARGET_CALL_STACK_OFFSET 0 #define TCG_TARGET_STACK_ALIGN 8 -#define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL #if TCG_TARGET_REG_BITS == 32 +# define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_EVEN # define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_EVEN #else +# define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL # define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL #endif |