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tcg-arm: Convert to le/be ldst helpers 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-12 08:58:33 -07:00
parent 099fcf2e36
commit 0315c51ea9
1 changed files with 28 additions and 20 deletions
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48
tcg/arm/tcg-target.c
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@ -1079,26 +1079,34 @@ static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index)
/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
* int mmu_idx, uintptr_t ra)
*/
static const void * const qemu_ld_helpers[8] = {
helper_ret_ldub_mmu,
helper_ret_lduw_mmu,
helper_ret_ldul_mmu,
helper_ret_ldq_mmu,
static const void * const qemu_ld_helpers[16] = {
[MO_UB] = helper_ret_ldub_mmu,
[MO_SB] = helper_ret_ldsb_mmu,
helper_ret_ldsb_mmu,
helper_ret_ldsw_mmu,
helper_ret_ldul_mmu,
helper_ret_ldq_mmu,
[MO_LEUW] = helper_le_lduw_mmu,
[MO_LEUL] = helper_le_ldul_mmu,
[MO_LEQ] = helper_le_ldq_mmu,
[MO_LESW] = helper_le_ldsw_mmu,
[MO_LESL] = helper_le_ldul_mmu,
[MO_BEUW] = helper_be_lduw_mmu,
[MO_BEUL] = helper_be_ldul_mmu,
[MO_BEQ] = helper_be_ldq_mmu,
[MO_BESW] = helper_be_ldsw_mmu,
[MO_BESL] = helper_be_ldul_mmu,
};
/* helper signature: helper_ret_st_mmu(CPUState *env, target_ulong addr,
* uintxx_t val, int mmu_idx, uintptr_t ra)
*/
static const void * const qemu_st_helpers[4] = {
helper_ret_stb_mmu,
helper_ret_stw_mmu,
helper_ret_stl_mmu,
helper_ret_stq_mmu,
static const void * const qemu_st_helpers[16] = {
[MO_UB] = helper_ret_stb_mmu,
[MO_LEUW] = helper_le_stw_mmu,
[MO_LEUL] = helper_le_stl_mmu,
[MO_LEQ] = helper_le_stq_mmu,
[MO_BEUW] = helper_be_stw_mmu,
[MO_BEUL] = helper_be_stl_mmu,
[MO_BEQ] = helper_be_stq_mmu,
};
/* Helper routines for marshalling helper function arguments into
@ -1261,7 +1269,7 @@ static void add_qemu_ldst_label(TCGContext *s, int is_ld, TCGMemOp opc,
static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGReg argreg, data_reg, data_reg2;
TCGMemOp opc = lb->opc & MO_SSIZE;
TCGMemOp opc = lb->opc;
uintptr_t func;
reloc_pc24(lb->label_ptr[0], (tcg_target_long)s->code_ptr);
@ -1279,7 +1287,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
icache usage. For pre-armv6, use the signed helpers since we do
not have a single insn sign-extend. */
if (use_armv6_instructions) {
func = (uintptr_t)qemu_ld_helpers[opc & MO_SIZE];
func = (uintptr_t)qemu_ld_helpers[opc & ~MO_SIGN];
} else {
func = (uintptr_t)qemu_ld_helpers[opc];
if (opc & MO_SIGN) {
@ -1290,7 +1298,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
data_reg = lb->datalo_reg;
data_reg2 = lb->datahi_reg;
switch (opc) {
switch (opc & MO_SSIZE) {
case MO_SB:
tcg_out_ext8s(s, COND_AL, data_reg, TCG_REG_R0);
break;
@ -1321,7 +1329,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGReg argreg, data_reg, data_reg2;
TCGMemOp s_bits = lb->opc & MO_SIZE;
TCGMemOp opc = lb->opc;
reloc_pc24(lb->label_ptr[0], (tcg_target_long)s->code_ptr);
@ -1335,7 +1343,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
data_reg = lb->datalo_reg;
data_reg2 = lb->datahi_reg;
switch (s_bits) {
switch (opc & MO_SIZE) {
case MO_8:
argreg = tcg_out_arg_reg8(s, argreg, data_reg);
break;
@ -1355,7 +1363,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
argreg = tcg_out_arg_reg32(s, argreg, TCG_REG_R14);
/* Tail-call to the helper, which will return to the fast path. */
tcg_out_goto(s, COND_AL, (tcg_target_long) qemu_st_helpers[s_bits]);
tcg_out_goto(s, COND_AL, (uintptr_t)qemu_st_helpers[opc]);
}
#endif /* SOFTMMU */