diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/arm/tcg-target.c | 58 |
1 files changed, 34 insertions, 24 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index 86e02c4d31..0b09672a48 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -183,15 +183,6 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) tcg_regset_reset_reg(ct->u.regs, TCG_REG_R14); #endif break; - case 'L': - ct->ct |= TCG_CT_REG; - tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); -#ifdef CONFIG_SOFTMMU - /* r1 is still needed to load data_reg or data_reg2, - so don't use it. */ - tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); -#endif - break; /* qemu_st address & data_reg */ case 's': @@ -1314,8 +1305,17 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) tcg_out_mov_reg(s, COND_AL, data_reg, TCG_REG_R0); break; case 3: - tcg_out_mov_reg(s, COND_AL, data_reg, TCG_REG_R0); - tcg_out_mov_reg(s, COND_AL, data_reg2, TCG_REG_R1); + if (data_reg != TCG_REG_R1) { + tcg_out_mov_reg(s, COND_AL, data_reg, TCG_REG_R0); + tcg_out_mov_reg(s, COND_AL, data_reg2, TCG_REG_R1); + } else if (data_reg2 != TCG_REG_R0) { + tcg_out_mov_reg(s, COND_AL, data_reg2, TCG_REG_R1); + tcg_out_mov_reg(s, COND_AL, data_reg, TCG_REG_R0); + } else { + tcg_out_mov_reg(s, COND_AL, TCG_REG_TMP, TCG_REG_R0); + tcg_out_mov_reg(s, COND_AL, data_reg2, TCG_REG_R1); + tcg_out_mov_reg(s, COND_AL, data_reg, TCG_REG_TMP); + } break; } @@ -1420,17 +1420,27 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc) } break; case 3: - if (bswap) { - tcg_out_ld32_rwb(s, COND_AL, data_reg2, addend, addr_reg); - tcg_out_ld32_12(s, COND_AL, data_reg, addend, 4); - tcg_out_bswap32(s, COND_AL, data_reg2, data_reg2); - tcg_out_bswap32(s, COND_AL, data_reg, data_reg); - } else if (use_armv6_instructions - && (data_reg & 1) == 0 && data_reg2 == data_reg + 1) { - tcg_out_ldrd_r(s, COND_AL, data_reg, addr_reg, addend); - } else { - tcg_out_ld32_rwb(s, COND_AL, data_reg, addend, addr_reg); - tcg_out_ld32_12(s, COND_AL, data_reg2, addend, 4); + { + /* Be careful not to modify data_reg and data_reg2 + for the slow path below. */ + TCGReg dl = (bswap ? data_reg2 : data_reg); + TCGReg dh = (bswap ? data_reg : data_reg2); + + if (use_armv6_instructions && (dl & 1) == 0 && dh == dl + 1) { + tcg_out_ldrd_r(s, COND_AL, dl, addr_reg, addend); + } else if (dl != addend) { + tcg_out_ld32_rwb(s, COND_AL, dl, addend, addr_reg); + tcg_out_ld32_12(s, COND_AL, dh, addend, 4); + } else { + tcg_out_dat_reg(s, COND_AL, ARITH_ADD, TCG_REG_TMP, + addend, addr_reg, SHIFT_IMM_LSL(0)); + tcg_out_ld32_12(s, COND_AL, dl, TCG_REG_TMP, 0); + tcg_out_ld32_12(s, COND_AL, dh, TCG_REG_TMP, 4); + } + if (bswap) { + tcg_out_bswap32(s, COND_AL, dh, dh); + tcg_out_bswap32(s, COND_AL, dl, dl); + } } break; } @@ -2025,7 +2035,7 @@ static const TCGTargetOpDef arm_op_defs[] = { { INDEX_op_qemu_ld16u, { "r", "l" } }, { INDEX_op_qemu_ld16s, { "r", "l" } }, { INDEX_op_qemu_ld32, { "r", "l" } }, - { INDEX_op_qemu_ld64, { "L", "L", "l" } }, + { INDEX_op_qemu_ld64, { "r", "r", "l" } }, { INDEX_op_qemu_st8, { "s", "s" } }, { INDEX_op_qemu_st16, { "s", "s" } }, @@ -2037,7 +2047,7 @@ static const TCGTargetOpDef arm_op_defs[] = { { INDEX_op_qemu_ld16u, { "r", "l", "l" } }, { INDEX_op_qemu_ld16s, { "r", "l", "l" } }, { INDEX_op_qemu_ld32, { "r", "l", "l" } }, - { INDEX_op_qemu_ld64, { "L", "L", "l", "l" } }, + { INDEX_op_qemu_ld64, { "r", "r", "l", "l" } }, { INDEX_op_qemu_st8, { "s", "s", "s" } }, { INDEX_op_qemu_st16, { "s", "s", "s" } }, |