| /* |
| * Tiny Code Generator for QEMU |
| * |
| * Copyright (c) 2008 Andrzej Zaborowski |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| const char *tcg_target_reg_names[TCG_TARGET_NB_REGS] = { |
| "%r0", |
| "%r1", |
| "%r2", |
| "%r3", |
| "%r4", |
| "%r5", |
| "%r6", |
| "%r7", |
| "%r8", |
| "%r9", |
| "%r10", |
| "%r11", |
| "%r12", |
| "%r13", |
| "%r14", |
| }; |
| |
| int tcg_target_reg_alloc_order[] = { |
| TCG_REG_R0, |
| TCG_REG_R1, |
| TCG_REG_R2, |
| TCG_REG_R3, |
| TCG_REG_R4, |
| TCG_REG_R5, |
| TCG_REG_R6, |
| TCG_REG_R7, |
| TCG_REG_R8, |
| TCG_REG_R9, |
| TCG_REG_R10, |
| TCG_REG_R11, |
| TCG_REG_R12, |
| TCG_REG_R13, |
| TCG_REG_R14, |
| }; |
| |
| const int tcg_target_call_iarg_regs[4] = { |
| TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3 |
| }; |
| const int tcg_target_call_oarg_regs[2] = { |
| TCG_REG_R0, TCG_REG_R1 |
| }; |
| |
| static void patch_reloc(uint8_t *code_ptr, int type, |
| tcg_target_long value, tcg_target_long addend) |
| { |
| switch (type) { |
| case R_ARM_ABS32: |
| *(uint32_t *) code_ptr = value; |
| break; |
| |
| case R_ARM_CALL: |
| case R_ARM_JUMP24: |
| default: |
| tcg_abort(); |
| |
| case R_ARM_PC24: |
| *(uint32_t *) code_ptr = ((*(uint32_t *) code_ptr) & 0xff000000) | |
| (((value - ((tcg_target_long) code_ptr + 8)) >> 2) & 0xffffff); |
| break; |
| } |
| } |
| |
| /* maximum number of register used for input function arguments */ |
| static inline int tcg_target_get_call_iarg_regs_count(int flags) |
| { |
| return 4; |
| } |
| |
| /* parse target specific constraints */ |
| int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) |
| { |
| const char *ct_str; |
| |
| ct_str = *pct_str; |
| switch (ct_str[0]) { |
| case 'r': |
| #ifndef CONFIG_SOFTMMU |
| case 'd': |
| case 'D': |
| case 'x': |
| case 'X': |
| #endif |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| break; |
| |
| #ifdef CONFIG_SOFTMMU |
| /* qemu_ld/st inputs (unless 'X', 'd' or 'D') */ |
| case 'x': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
| break; |
| |
| /* qemu_ld64 data_reg */ |
| case 'd': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| /* r1 is still needed to load data_reg2, so don't use it. */ |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
| break; |
| |
| /* qemu_ld/st64 data_reg2 */ |
| case 'D': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| /* r0, r1 and optionally r2 will be overwritten by the address |
| * and the low word of data, so don't use these. */ |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
| # if TARGET_LONG_BITS == 64 |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2); |
| # endif |
| break; |
| |
| # if TARGET_LONG_BITS == 64 |
| /* qemu_ld/st addr_reg2 */ |
| case 'X': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| /* r0 will be overwritten by the low word of base, so don't use it. */ |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
| break; |
| # endif |
| #endif |
| |
| case '1': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| break; |
| |
| case '2': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
| break; |
| |
| default: |
| return -1; |
| } |
| ct_str++; |
| *pct_str = ct_str; |
| |
| return 0; |
| } |
| |
| /* Test if a constant matches the constraint. |
| * TODO: define constraints for: |
| * |
| * ldr/str offset: between -0xfff and 0xfff |
| * ldrh/strh offset: between -0xff and 0xff |
| * mov operand2: values represented with x << (2 * y), x < 0x100 |
| * add, sub, eor...: ditto |
| */ |
| static inline int tcg_target_const_match(tcg_target_long val, |
| const TCGArgConstraint *arg_ct) |
| { |
| int ct; |
| ct = arg_ct->ct; |
| if (ct & TCG_CT_CONST) |
| return 1; |
| else |
| return 0; |
| } |
| |
| enum arm_data_opc_e { |
| ARITH_AND = 0x0, |
| ARITH_EOR = 0x1, |
| ARITH_SUB = 0x2, |
| ARITH_RSB = 0x3, |
| ARITH_ADD = 0x4, |
| ARITH_ADC = 0x5, |
| ARITH_SBC = 0x6, |
| ARITH_RSC = 0x7, |
| ARITH_TST = 0x8, |
| ARITH_CMP = 0xa, |
| ARITH_CMN = 0xb, |
| ARITH_ORR = 0xc, |
| ARITH_MOV = 0xd, |
| ARITH_BIC = 0xe, |
| ARITH_MVN = 0xf, |
| }; |
| |
| #define TO_CPSR(opc) \ |
| ((opc == ARITH_CMP || opc == ARITH_CMN || opc == ARITH_TST) << 20) |
| |
| #define SHIFT_IMM_LSL(im) (((im) << 7) | 0x00) |
| #define SHIFT_IMM_LSR(im) (((im) << 7) | 0x20) |
| #define SHIFT_IMM_ASR(im) (((im) << 7) | 0x40) |
| #define SHIFT_IMM_ROR(im) (((im) << 7) | 0x60) |
| #define SHIFT_REG_LSL(rs) (((rs) << 8) | 0x10) |
| #define SHIFT_REG_LSR(rs) (((rs) << 8) | 0x30) |
| #define SHIFT_REG_ASR(rs) (((rs) << 8) | 0x50) |
| #define SHIFT_REG_ROR(rs) (((rs) << 8) | 0x70) |
| |
| enum arm_cond_code_e { |
| COND_EQ = 0x0, |
| COND_NE = 0x1, |
| COND_CS = 0x2, /* Unsigned greater or equal */ |
| COND_CC = 0x3, /* Unsigned less than */ |
| COND_MI = 0x4, /* Negative */ |
| COND_PL = 0x5, /* Zero or greater */ |
| COND_VS = 0x6, /* Overflow */ |
| COND_VC = 0x7, /* No overflow */ |
| COND_HI = 0x8, /* Unsigned greater than */ |
| COND_LS = 0x9, /* Unsigned less or equal */ |
| COND_GE = 0xa, |
| COND_LT = 0xb, |
| COND_GT = 0xc, |
| COND_LE = 0xd, |
| COND_AL = 0xe, |
| }; |
| |
| static const uint8_t tcg_cond_to_arm_cond[10] = { |
| [TCG_COND_EQ] = COND_EQ, |
| [TCG_COND_NE] = COND_NE, |
| [TCG_COND_LT] = COND_LT, |
| [TCG_COND_GE] = COND_GE, |
| [TCG_COND_LE] = COND_LE, |
| [TCG_COND_GT] = COND_GT, |
| /* unsigned */ |
| [TCG_COND_LTU] = COND_CC, |
| [TCG_COND_GEU] = COND_CS, |
| [TCG_COND_LEU] = COND_LS, |
| [TCG_COND_GTU] = COND_HI, |
| }; |
| |
| static inline void tcg_out_bx(TCGContext *s, int cond, int rn) |
| { |
| tcg_out32(s, (cond << 28) | 0x012fff10 | rn); |
| } |
| |
| static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset) |
| { |
| tcg_out32(s, (cond << 28) | 0x0a000000 | |
| (((offset - 8) >> 2) & 0x00ffffff)); |
| } |
| |
| static inline void tcg_out_b_noaddr(TCGContext *s, int cond) |
| { |
| #ifdef WORDS_BIGENDIAN |
| tcg_out8(s, (cond << 4) | 0x0a); |
| s->code_ptr += 3; |
| #else |
| s->code_ptr += 3; |
| tcg_out8(s, (cond << 4) | 0x0a); |
| #endif |
| } |
| |
| static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset) |
| { |
| tcg_out32(s, (cond << 28) | 0x0b000000 | |
| (((offset - 8) >> 2) & 0x00ffffff)); |
| } |
| |
| static inline void tcg_out_dat_reg(TCGContext *s, |
| int cond, int opc, int rd, int rn, int rm, int shift) |
| { |
| tcg_out32(s, (cond << 28) | (0 << 25) | (opc << 21) | TO_CPSR(opc) | |
| (rn << 16) | (rd << 12) | shift | rm); |
| } |
| |
| static inline void tcg_out_dat_reg2(TCGContext *s, |
| int cond, int opc0, int opc1, int rd0, int rd1, |
| int rn0, int rn1, int rm0, int rm1, int shift) |
| { |
| tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) | |
| (rn0 << 16) | (rd0 << 12) | shift | rm0); |
| tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) | |
| (rn1 << 16) | (rd1 << 12) | shift | rm1); |
| } |
| |
| static inline void tcg_out_dat_imm(TCGContext *s, |
| int cond, int opc, int rd, int rn, int im) |
| { |
| tcg_out32(s, (cond << 28) | (1 << 25) | (opc << 21) | TO_CPSR(opc) | |
| (rn << 16) | (rd << 12) | im); |
| } |
| |
| static inline void tcg_out_movi32(TCGContext *s, |
| int cond, int rd, int32_t arg) |
| { |
| int offset = (uint32_t) arg - ((uint32_t) s->code_ptr + 8); |
| |
| /* TODO: This is very suboptimal, we can easily have a constant |
| * pool somewhere after all the instructions. */ |
| |
| if (arg < 0 && arg > -0x100) |
| return tcg_out_dat_imm(s, cond, ARITH_MVN, rd, 0, (~arg) & 0xff); |
| |
| if (offset < 0x100 && offset > -0x100) |
| return offset >= 0 ? |
| tcg_out_dat_imm(s, cond, ARITH_ADD, rd, 15, offset) : |
| tcg_out_dat_imm(s, cond, ARITH_SUB, rd, 15, -offset); |
| |
| tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff); |
| if (arg & 0x0000ff00) |
| tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| ((arg >> 8) & 0xff) | 0xc00); |
| if (arg & 0x00ff0000) |
| tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| ((arg >> 16) & 0xff) | 0x800); |
| if (arg & 0xff000000) |
| tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| ((arg >> 24) & 0xff) | 0x400); |
| } |
| |
| static inline void tcg_out_mul32(TCGContext *s, |
| int cond, int rd, int rs, int rm) |
| { |
| if (rd != rm) |
| tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) | |
| (rs << 8) | 0x90 | rm); |
| else if (rd != rs) |
| tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) | |
| (rm << 8) | 0x90 | rs); |
| else { |
| tcg_out32(s, (cond << 28) | ( 8 << 16) | (0 << 12) | |
| (rs << 8) | 0x90 | rm); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| rd, 0, 8, SHIFT_IMM_LSL(0)); |
| } |
| } |
| |
| static inline void tcg_out_umull32(TCGContext *s, |
| int cond, int rd0, int rd1, int rs, int rm) |
| { |
| if (rd0 != rm && rd1 != rm) |
| tcg_out32(s, (cond << 28) | 0x800090 | |
| (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm); |
| else if (rd0 != rs && rd1 != rs) |
| tcg_out32(s, (cond << 28) | 0x800090 | |
| (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs); |
| else { |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0)); |
| tcg_out32(s, (cond << 28) | 0x800098 | |
| (rd1 << 16) | (rd0 << 12) | (rs << 8)); |
| } |
| } |
| |
| static inline void tcg_out_smull32(TCGContext *s, |
| int cond, int rd0, int rd1, int rs, int rm) |
| { |
| if (rd0 != rm && rd1 != rm) |
| tcg_out32(s, (cond << 28) | 0xc00090 | |
| (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm); |
| else if (rd0 != rs && rd1 != rs) |
| tcg_out32(s, (cond << 28) | 0xc00090 | |
| (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs); |
| else { |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0)); |
| tcg_out32(s, (cond << 28) | 0xc00098 | |
| (rd1 << 16) | (rd0 << 12) | (rs << 8)); |
| } |
| } |
| |
| static inline void tcg_out_ld32_12(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x05900000 | |
| (rn << 16) | (rd << 12) | (im & 0xfff)); |
| else |
| tcg_out32(s, (cond << 28) | 0x05100000 | |
| (rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| } |
| |
| static inline void tcg_out_st32_12(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x05800000 | |
| (rn << 16) | (rd << 12) | (im & 0xfff)); |
| else |
| tcg_out32(s, (cond << 28) | 0x05000000 | |
| (rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| } |
| |
| static inline void tcg_out_ld32_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07900000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st32_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07800000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| /* Register pre-increment with base writeback. */ |
| static inline void tcg_out_ld32_rwb(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07b00000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st32_rwb(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07a00000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_ld16u_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01d000b0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x015000b0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_st16u_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01c000b0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x014000b0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_ld16u_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x019000b0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st16u_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x018000b0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_ld16s_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01d000f0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x015000f0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_st16s_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01c000f0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x014000f0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_ld16s_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x019000f0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st16s_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x018000f0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_ld8_12(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x05d00000 | |
| (rn << 16) | (rd << 12) | (im & 0xfff)); |
| else |
| tcg_out32(s, (cond << 28) | 0x05500000 | |
| (rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| } |
| |
| static inline void tcg_out_st8_12(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x05c00000 | |
| (rn << 16) | (rd << 12) | (im & 0xfff)); |
| else |
| tcg_out32(s, (cond << 28) | 0x05400000 | |
| (rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| } |
| |
| static inline void tcg_out_ld8_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07d00000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st8_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x07c00000 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_ld8s_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01d000d0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x015000d0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_st8s_8(TCGContext *s, int cond, |
| int rd, int rn, tcg_target_long im) |
| { |
| if (im >= 0) |
| tcg_out32(s, (cond << 28) | 0x01c000d0 | |
| (rn << 16) | (rd << 12) | |
| ((im & 0xf0) << 4) | (im & 0xf)); |
| else |
| tcg_out32(s, (cond << 28) | 0x014000d0 | |
| (rn << 16) | (rd << 12) | |
| (((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| } |
| |
| static inline void tcg_out_ld8s_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x019000d0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_st8s_r(TCGContext *s, int cond, |
| int rd, int rn, int rm) |
| { |
| tcg_out32(s, (cond << 28) | 0x018000d0 | |
| (rn << 16) | (rd << 12) | rm); |
| } |
| |
| static inline void tcg_out_ld32u(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xfff || offset < -0xfff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_ld32_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_ld32_12(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_st32(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xfff || offset < -0xfff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_st32_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_st32_12(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_ld16u(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xff || offset < -0xff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_ld16u_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_ld16u_8(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_ld16s(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xff || offset < -0xff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_ld16s_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_ld16s_8(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_st16u(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xff || offset < -0xff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_st16u_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_st16u_8(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_ld8u(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xfff || offset < -0xfff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_ld8_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_ld8_12(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_ld8s(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xff || offset < -0xff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_ld8s_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_ld8s_8(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_st8u(TCGContext *s, int cond, |
| int rd, int rn, int32_t offset) |
| { |
| if (offset > 0xfff || offset < -0xfff) { |
| tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| tcg_out_st8_r(s, cond, rd, rn, TCG_REG_R8); |
| } else |
| tcg_out_st8_12(s, cond, rd, rn, offset); |
| } |
| |
| static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr) |
| { |
| int32_t val; |
| |
| val = addr - (tcg_target_long) s->code_ptr; |
| if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd) |
| tcg_out_b(s, cond, val); |
| else { |
| #if 1 |
| tcg_abort(); |
| #else |
| if (cond == COND_AL) { |
| tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */ |
| } else { |
| tcg_out_movi32(s, cond, TCG_REG_R8, val - 8); |
| tcg_out_dat_reg(s, cond, ARITH_ADD, |
| 15, 15, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| } |
| #endif |
| } |
| } |
| |
| static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr) |
| { |
| int32_t val; |
| |
| #ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0)); |
| #endif |
| |
| val = addr - (tcg_target_long) s->code_ptr; |
| if (val < 0x01fffffd && val > -0x01fffffd) |
| tcg_out_bl(s, cond, val); |
| else { |
| #if 1 |
| tcg_abort(); |
| #else |
| if (cond == COND_AL) { |
| tcg_out_dat_imm(s, cond, ARITH_ADD, 14, 15, 4); |
| tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */ |
| } else { |
| tcg_out_movi32(s, cond, TCG_REG_R9, addr); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 14, 0, 15); |
| tcg_out_bx(s, cond, TCG_REG_R9); |
| } |
| #endif |
| } |
| |
| #ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| #endif |
| } |
| |
| static inline void tcg_out_callr(TCGContext *s, int cond, int arg) |
| { |
| #ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0)); |
| #endif |
| /* TODO: on ARMv5 and ARMv6 replace with tcg_out_blx(s, cond, arg); */ |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 15, SHIFT_IMM_LSL(0)); |
| tcg_out_bx(s, cond, arg); |
| #ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| #endif |
| } |
| |
| static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index) |
| { |
| TCGLabel *l = &s->labels[label_index]; |
| |
| if (l->has_value) |
| tcg_out_goto(s, cond, l->u.value); |
| else if (cond == COND_AL) { |
| tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| tcg_out_reloc(s, s->code_ptr, R_ARM_ABS32, label_index, 31337); |
| s->code_ptr += 4; |
| } else { |
| /* Probably this should be preferred even for COND_AL... */ |
| tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, label_index, 31337); |
| tcg_out_b_noaddr(s, cond); |
| } |
| } |
| |
| static void tcg_out_div_helper(TCGContext *s, int cond, const TCGArg *args, |
| void *helper_div, void *helper_rem, int shift) |
| { |
| int div_reg = args[0]; |
| int rem_reg = args[1]; |
| |
| /* stmdb sp!, { r0 - r3, ip, lr } */ |
| /* (Note that we need an even number of registers as per EABI) */ |
| tcg_out32(s, (cond << 28) | 0x092d500f); |
| |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 0, 0, args[2], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 1, 0, args[3], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 2, 0, args[4], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 3, 0, 2, shift); |
| |
| tcg_out_call(s, cond, (uint32_t) helper_div); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 0, SHIFT_IMM_LSL(0)); |
| |
| /* ldmia sp, { r0 - r3, fp, lr } */ |
| tcg_out32(s, (cond << 28) | 0x089d500f); |
| |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 0, 0, args[2], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 1, 0, args[3], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 2, 0, args[4], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 3, 0, 2, shift); |
| |
| tcg_out_call(s, cond, (uint32_t) helper_rem); |
| |
| tcg_out_dat_reg(s, cond, ARITH_MOV, rem_reg, 0, 0, SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, div_reg, 0, 8, SHIFT_IMM_LSL(0)); |
| |
| /* ldr r0, [sp], #4 */ |
| if (rem_reg != 0 && div_reg != 0) |
| tcg_out32(s, (cond << 28) | 0x04bd0004); |
| /* ldr r1, [sp], #4 */ |
| if (rem_reg != 1 && div_reg != 1) |
| tcg_out32(s, (cond << 28) | 0x04bd1004); |
| /* ldr r2, [sp], #4 */ |
| if (rem_reg != 2 && div_reg != 2) |
| tcg_out32(s, (cond << 28) | 0x04bd2004); |
| /* ldr r3, [sp], #4 */ |
| if (rem_reg != 3 && div_reg != 3) |
| tcg_out32(s, (cond << 28) | 0x04bd3004); |
| /* ldr ip, [sp], #4 */ |
| if (rem_reg != 12 && div_reg != 12) |
| tcg_out32(s, (cond << 28) | 0x04bdc004); |
| /* ldr lr, [sp], #4 */ |
| if (rem_reg != 14 && div_reg != 14) |
| tcg_out32(s, (cond << 28) | 0x04bde004); |
| } |
| |
| #ifdef CONFIG_SOFTMMU |
| extern void __ldb_mmu(void); |
| extern void __ldw_mmu(void); |
| extern void __ldl_mmu(void); |
| extern void __ldq_mmu(void); |
| |
| extern void __stb_mmu(void); |
| extern void __stw_mmu(void); |
| extern void __stl_mmu(void); |
| extern void __stq_mmu(void); |
| |
| static void *qemu_ld_helpers[4] = { |
| __ldb_mmu, |
| __ldw_mmu, |
| __ldl_mmu, |
| __ldq_mmu, |
| }; |
| |
| static void *qemu_st_helpers[4] = { |
| __stb_mmu, |
| __stw_mmu, |
| __stl_mmu, |
| __stq_mmu, |
| }; |
| #endif |
| |
| #define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS) |
| |
| static inline void tcg_out_qemu_ld(TCGContext *s, int cond, |
| const TCGArg *args, int opc) |
| { |
| int addr_reg, data_reg, data_reg2; |
| #ifdef CONFIG_SOFTMMU |
| int mem_index, s_bits; |
| # if TARGET_LONG_BITS == 64 |
| int addr_reg2; |
| # endif |
| uint32_t *label_ptr; |
| #endif |
| |
| data_reg = *args++; |
| if (opc == 3) |
| data_reg2 = *args++; |
| else |
| data_reg2 = 0; /* surpress warning */ |
| addr_reg = *args++; |
| #if TARGET_LONG_BITS == 64 |
| addr_reg2 = *args++; |
| #endif |
| #ifdef CONFIG_SOFTMMU |
| mem_index = *args; |
| s_bits = opc & 3; |
| |
| /* Should generate something like the following: |
| * shr r8, addr_reg, #TARGET_PAGE_BITS |
| * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8 |
| * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS |
| */ |
| # if CPU_TLB_BITS > 8 |
| # error |
| # endif |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS)); |
| tcg_out_dat_imm(s, COND_AL, ARITH_AND, |
| 0, 8, CPU_TLB_SIZE - 1); |
| tcg_out_dat_reg(s, COND_AL, ARITH_ADD, |
| 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS)); |
| /* In the |
| * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))] |
| * below, the offset is likely to exceed 12 bits if mem_index != 0 and |
| * not exceed otherwise, so use an |
| * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table) |
| * before. |
| */ |
| if (mem_index) |
| tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0, |
| (mem_index << (TLB_SHIFT & 1)) | |
| ((16 - (TLB_SHIFT >> 1)) << 8)); |
| tcg_out_ld32_12(s, COND_AL, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addr_read)); |
| tcg_out_dat_reg(s, COND_AL, ARITH_CMP, |
| 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS)); |
| /* Check alignment. */ |
| if (s_bits) |
| tcg_out_dat_imm(s, COND_EQ, ARITH_TST, |
| 0, addr_reg, (1 << s_bits) - 1); |
| # if TARGET_LONG_BITS == 64 |
| /* XXX: possibly we could use a block data load or writeback in |
| * the first access. */ |
| tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addr_read) + 4); |
| tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, |
| 0, 1, addr_reg2, SHIFT_IMM_LSL(0)); |
| # endif |
| tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addend)); |
| |
| switch (opc) { |
| case 0: |
| tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 0 | 4: |
| tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 1: |
| tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 1 | 4: |
| tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 2: |
| default: |
| tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 3: |
| tcg_out_ld32_rwb(s, COND_EQ, data_reg, 1, addr_reg); |
| tcg_out_ld32_12(s, COND_EQ, data_reg2, 1, 4); |
| break; |
| } |
| |
| label_ptr = (void *) s->code_ptr; |
| tcg_out_b(s, COND_EQ, 8); |
| |
| # ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0)); |
| # endif |
| |
| /* TODO: move this code to where the constants pool will be */ |
| if (addr_reg) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 0, 0, addr_reg, SHIFT_IMM_LSL(0)); |
| # if TARGET_LONG_BITS == 32 |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 1, 0, mem_index); |
| # else |
| if (addr_reg2 != 1) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, addr_reg2, SHIFT_IMM_LSL(0)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| # endif |
| tcg_out_bl(s, cond, (tcg_target_long) qemu_ld_helpers[s_bits] - |
| (tcg_target_long) s->code_ptr); |
| |
| switch (opc) { |
| case 0 | 4: |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 0, 0, 0, SHIFT_IMM_LSL(24)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| data_reg, 0, 0, SHIFT_IMM_ASR(24)); |
| break; |
| case 1 | 4: |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 0, 0, 0, SHIFT_IMM_LSL(16)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| data_reg, 0, 0, SHIFT_IMM_ASR(16)); |
| break; |
| case 0: |
| case 1: |
| case 2: |
| default: |
| if (data_reg) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| data_reg, 0, 0, SHIFT_IMM_LSL(0)); |
| break; |
| case 3: |
| if (data_reg != 0) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| data_reg, 0, 0, SHIFT_IMM_LSL(0)); |
| if (data_reg2 != 1) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| data_reg2, 0, 1, SHIFT_IMM_LSL(0)); |
| break; |
| } |
| |
| # ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0)); |
| # endif |
| |
| *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2; |
| #else |
| switch (opc) { |
| case 0: |
| tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 0 | 4: |
| tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 1: |
| tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 1 | 4: |
| tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 2: |
| default: |
| tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 3: |
| /* TODO: use block load - |
| * check that data_reg2 > data_reg or the other way */ |
| tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0); |
| tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4); |
| break; |
| } |
| #endif |
| } |
| |
| static inline void tcg_out_qemu_st(TCGContext *s, int cond, |
| const TCGArg *args, int opc) |
| { |
| int addr_reg, data_reg, data_reg2; |
| #ifdef CONFIG_SOFTMMU |
| int mem_index, s_bits; |
| # if TARGET_LONG_BITS == 64 |
| int addr_reg2; |
| # endif |
| uint32_t *label_ptr; |
| #endif |
| |
| data_reg = *args++; |
| if (opc == 3) |
| data_reg2 = *args++; |
| else |
| data_reg2 = 0; /* surpress warning */ |
| addr_reg = *args++; |
| #if TARGET_LONG_BITS == 64 |
| addr_reg2 = *args++; |
| #endif |
| #ifdef CONFIG_SOFTMMU |
| mem_index = *args; |
| s_bits = opc & 3; |
| |
| /* Should generate something like the following: |
| * shr r8, addr_reg, #TARGET_PAGE_BITS |
| * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8 |
| * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS |
| */ |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS)); |
| tcg_out_dat_imm(s, COND_AL, ARITH_AND, |
| 0, 8, CPU_TLB_SIZE - 1); |
| tcg_out_dat_reg(s, COND_AL, ARITH_ADD, |
| 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS)); |
| /* In the |
| * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))] |
| * below, the offset is likely to exceed 12 bits if mem_index != 0 and |
| * not exceed otherwise, so use an |
| * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table) |
| * before. |
| */ |
| if (mem_index) |
| tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0, |
| (mem_index << (TLB_SHIFT & 1)) | |
| ((16 - (TLB_SHIFT >> 1)) << 8)); |
| tcg_out_ld32_12(s, COND_AL, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addr_write)); |
| tcg_out_dat_reg(s, COND_AL, ARITH_CMP, |
| 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS)); |
| /* Check alignment. */ |
| if (s_bits) |
| tcg_out_dat_imm(s, COND_EQ, ARITH_TST, |
| 0, addr_reg, (1 << s_bits) - 1); |
| # if TARGET_LONG_BITS == 64 |
| /* XXX: possibly we could use a block data load or writeback in |
| * the first access. */ |
| tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addr_write) |
| + 4); |
| tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, |
| 0, 1, addr_reg2, SHIFT_IMM_LSL(0)); |
| # endif |
| tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| offsetof(CPUState, tlb_table[0][0].addend)); |
| |
| switch (opc) { |
| case 0: |
| tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 0 | 4: |
| tcg_out_st8s_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 1: |
| tcg_out_st16u_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 1 | 4: |
| tcg_out_st16s_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 2: |
| default: |
| tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, 1); |
| break; |
| case 3: |
| tcg_out_st32_rwb(s, COND_EQ, data_reg, 1, addr_reg); |
| tcg_out_st32_12(s, COND_EQ, data_reg2, 1, 4); |
| break; |
| } |
| |
| label_ptr = (void *) s->code_ptr; |
| tcg_out_b(s, COND_EQ, 8); |
| |
| /* TODO: move this code to where the constants pool will be */ |
| if (addr_reg) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 0, 0, addr_reg, SHIFT_IMM_LSL(0)); |
| # if TARGET_LONG_BITS == 32 |
| switch (opc) { |
| case 0: |
| tcg_out_dat_imm(s, cond, ARITH_AND, 1, data_reg, 0xff); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| break; |
| case 1: |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, data_reg, SHIFT_IMM_LSL(16)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, 1, SHIFT_IMM_LSR(16)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| break; |
| case 2: |
| if (data_reg != 1) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, data_reg, SHIFT_IMM_LSL(0)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| break; |
| case 3: |
| if (data_reg != 1) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, data_reg, SHIFT_IMM_LSL(0)); |
| if (data_reg2 != 2) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 2, 0, data_reg2, SHIFT_IMM_LSL(0)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| break; |
| } |
| # else |
| if (addr_reg2 != 1) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1, 0, addr_reg2, SHIFT_IMM_LSL(0)); |
| switch (opc) { |
| case 0: |
| tcg_out_dat_imm(s, cond, ARITH_AND, 2, data_reg, 0xff); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| break; |
| case 1: |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 2, 0, data_reg, SHIFT_IMM_LSL(16)); |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 2, 0, 2, SHIFT_IMM_LSR(16)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| break; |
| case 2: |
| if (data_reg != 2) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 2, 0, data_reg, SHIFT_IMM_LSL(0)); |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| break; |
| case 3: |
| tcg_out_dat_imm(s, cond, ARITH_MOV, 8, 0, mem_index); |
| tcg_out32(s, (cond << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */ |
| if (data_reg != 2) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 2, 0, data_reg, SHIFT_IMM_LSL(0)); |
| if (data_reg2 != 3) |
| tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 3, 0, data_reg2, SHIFT_IMM_LSL(0)); |
| break; |
| } |
| # endif |
| |
| # ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0)); |
| # endif |
| |
| tcg_out_bl(s, cond, (tcg_target_long) qemu_st_helpers[s_bits] - |
| (tcg_target_long) s->code_ptr); |
| # if TARGET_LONG_BITS == 64 |
| if (opc == 3) |
| tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 0x10); |
| # endif |
| |
| # ifdef SAVE_LR |
| tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0)); |
| # endif |
| |
| *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2; |
| #else |
| switch (opc) { |
| case 0: |
| tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 0 | 4: |
| tcg_out_st8s_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 1: |
| tcg_out_st16u_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 1 | 4: |
| tcg_out_st16s_8(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 2: |
| default: |
| tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0); |
| break; |
| case 3: |
| /* TODO: use block store - |
| * check that data_reg2 > data_reg or the other way */ |
| tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0); |
| tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4); |
| break; |
| } |
| #endif |
| } |
| |
| static uint8_t *tb_ret_addr; |
| |
| static inline void tcg_out_op(TCGContext *s, int opc, |
| const TCGArg *args, const int *const_args) |
| { |
| int c; |
| |
| switch (opc) { |
| case INDEX_op_exit_tb: |
| #ifdef SAVE_LR |
| if (args[0] >> 8) |
| tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0); |
| else |
| tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]); |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, 15, 0, 14, SHIFT_IMM_LSL(0)); |
| if (args[0] >> 8) |
| tcg_out32(s, args[0]); |
| #else |
| if (args[0] >> 8) |
| tcg_out_ld32_12(s, COND_AL, 0, 15, 0); |
| else |
| tcg_out_dat_imm(s, COND_AL, ARITH_MOV, 0, 0, args[0]); |
| tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr); |
| if (args[0] >> 8) |
| tcg_out32(s, args[0]); |
| #endif |
| break; |
| case INDEX_op_goto_tb: |
| if (s->tb_jmp_offset) { |
| /* Direct jump method */ |
| #if 1 |
| s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; |
| tcg_out_b(s, COND_AL, 8); |
| #else |
| tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; |
| tcg_out32(s, 0); |
| #endif |
| } else { |
| /* Indirect jump method */ |
| #if 1 |
| c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8); |
| if (c > 0xfff || c < -0xfff) { |
| tcg_out_movi32(s, COND_AL, TCG_REG_R0, |
| (tcg_target_long) (s->tb_next + args[0])); |
| tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0); |
| } else |
| tcg_out_ld32_12(s, COND_AL, 15, 15, c); |
| #else |
| tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0); |
| tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0); |
| tcg_out32(s, (tcg_target_long) (s->tb_next + args[0])); |
| #endif |
| } |
| s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; |
| break; |
| case INDEX_op_call: |
| if (const_args[0]) |
| tcg_out_call(s, COND_AL, args[0]); |
| else |
| tcg_out_callr(s, COND_AL, args[0]); |
| break; |
| case INDEX_op_jmp: |
| if (const_args[0]) |
| tcg_out_goto(s, COND_AL, args[0]); |
| else |
| tcg_out_bx(s, COND_AL, args[0]); |
| break; |
| case INDEX_op_br: |
| tcg_out_goto_label(s, COND_AL, args[0]); |
| break; |
| |
| case INDEX_op_ld8u_i32: |
| tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_ld8s_i32: |
| tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_ld16u_i32: |
| tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_ld16s_i32: |
| tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_ld_i32: |
| tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_st8_i32: |
| tcg_out_st8u(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_st16_i32: |
| tcg_out_st16u(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_st_i32: |
| tcg_out_st32(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| |
| case INDEX_op_mov_i32: |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| args[0], 0, args[1], SHIFT_IMM_LSL(0)); |
| break; |
| case INDEX_op_movi_i32: |
| tcg_out_movi32(s, COND_AL, args[0], args[1]); |
| break; |
| case INDEX_op_add_i32: |
| c = ARITH_ADD; |
| goto gen_arith; |
| case INDEX_op_sub_i32: |
| c = ARITH_SUB; |
| goto gen_arith; |
| case INDEX_op_and_i32: |
| c = ARITH_AND; |
| goto gen_arith; |
| case INDEX_op_or_i32: |
| c = ARITH_ORR; |
| goto gen_arith; |
| case INDEX_op_xor_i32: |
| c = ARITH_EOR; |
| /* Fall through. */ |
| gen_arith: |
| tcg_out_dat_reg(s, COND_AL, c, |
| args[0], args[1], args[2], SHIFT_IMM_LSL(0)); |
| break; |
| case INDEX_op_add2_i32: |
| tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC, |
| args[0], args[1], args[2], args[3], |
| args[4], args[5], SHIFT_IMM_LSL(0)); |
| break; |
| case INDEX_op_sub2_i32: |
| tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC, |
| args[0], args[1], args[2], args[3], |
| args[4], args[5], SHIFT_IMM_LSL(0)); |
| break; |
| case INDEX_op_neg_i32: |
| tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0); |
| break; |
| case INDEX_op_mul_i32: |
| tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]); |
| break; |
| case INDEX_op_mulu2_i32: |
| tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]); |
| break; |
| case INDEX_op_div2_i32: |
| tcg_out_div_helper(s, COND_AL, args, |
| tcg_helper_div_i64, tcg_helper_rem_i64, |
| SHIFT_IMM_ASR(31)); |
| break; |
| case INDEX_op_divu2_i32: |
| tcg_out_div_helper(s, COND_AL, args, |
| tcg_helper_divu_i64, tcg_helper_remu_i64, |
| SHIFT_IMM_LSR(31)); |
| break; |
| /* XXX: Perhaps args[2] & 0x1f is wrong */ |
| case INDEX_op_shl_i32: |
| c = const_args[2] ? |
| SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]); |
| goto gen_shift32; |
| case INDEX_op_shr_i32: |
| c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) : |
| SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]); |
| goto gen_shift32; |
| case INDEX_op_sar_i32: |
| c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) : |
| SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]); |
| /* Fall through. */ |
| gen_shift32: |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c); |
| break; |
| |
| case INDEX_op_brcond_i32: |
| tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0, |
| args[0], args[1], SHIFT_IMM_LSL(0)); |
| tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]); |
| break; |
| case INDEX_op_brcond2_i32: |
| /* The resulting conditions are: |
| * TCG_COND_EQ --> a0 == a2 && a1 == a3, |
| * TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3, |
| * TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3, |
| * TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3), |
| * TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3), |
| * TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3, |
| */ |
| tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0, |
| args[1], args[3], SHIFT_IMM_LSL(0)); |
| tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0, |
| args[0], args[2], SHIFT_IMM_LSL(0)); |
| tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]); |
| break; |
| |
| case INDEX_op_qemu_ld8u: |
| tcg_out_qemu_ld(s, COND_AL, args, 0); |
| break; |
| case INDEX_op_qemu_ld8s: |
| tcg_out_qemu_ld(s, COND_AL, args, 0 | 4); |
| break; |
| case INDEX_op_qemu_ld16u: |
| tcg_out_qemu_ld(s, COND_AL, args, 1); |
| break; |
| case INDEX_op_qemu_ld16s: |
| tcg_out_qemu_ld(s, COND_AL, args, 1 | 4); |
| break; |
| case INDEX_op_qemu_ld32u: |
| tcg_out_qemu_ld(s, COND_AL, args, 2); |
| break; |
| case INDEX_op_qemu_ld64: |
| tcg_out_qemu_ld(s, COND_AL, args, 3); |
| break; |
| |
| case INDEX_op_qemu_st8: |
| tcg_out_qemu_st(s, COND_AL, args, 0); |
| break; |
| case INDEX_op_qemu_st16: |
| tcg_out_qemu_st(s, COND_AL, args, 1); |
| break; |
| case INDEX_op_qemu_st32: |
| tcg_out_qemu_st(s, COND_AL, args, 2); |
| break; |
| case INDEX_op_qemu_st64: |
| tcg_out_qemu_st(s, COND_AL, args, 3); |
| break; |
| |
| case INDEX_op_ext8s_i32: |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| args[0], 0, args[1], SHIFT_IMM_LSL(24)); |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| args[0], 0, args[0], SHIFT_IMM_ASR(24)); |
| break; |
| case INDEX_op_ext16s_i32: |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| args[0], 0, args[1], SHIFT_IMM_LSL(16)); |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| args[0], 0, args[0], SHIFT_IMM_ASR(16)); |
| break; |
| |
| default: |
| tcg_abort(); |
| } |
| } |
| |
| static const TCGTargetOpDef arm_op_defs[] = { |
| { INDEX_op_exit_tb, { } }, |
| { INDEX_op_goto_tb, { } }, |
| { INDEX_op_call, { "ri" } }, |
| { INDEX_op_jmp, { "ri" } }, |
| { INDEX_op_br, { } }, |
| |
| { INDEX_op_mov_i32, { "r", "r" } }, |
| { INDEX_op_movi_i32, { "r" } }, |
| |
| { INDEX_op_ld8u_i32, { "r", "r" } }, |
| { INDEX_op_ld8s_i32, { "r", "r" } }, |
| { INDEX_op_ld16u_i32, { "r", "r" } }, |
| { INDEX_op_ld16s_i32, { "r", "r" } }, |
| { INDEX_op_ld_i32, { "r", "r" } }, |
| { INDEX_op_st8_i32, { "r", "r" } }, |
| { INDEX_op_st16_i32, { "r", "r" } }, |
| { INDEX_op_st_i32, { "r", "r" } }, |
| |
| /* TODO: "r", "r", "ri" */ |
| { INDEX_op_add_i32, { "r", "r", "r" } }, |
| { INDEX_op_sub_i32, { "r", "r", "r" } }, |
| { INDEX_op_mul_i32, { "r", "r", "r" } }, |
| { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } }, |
| { INDEX_op_div2_i32, { "r", "r", "r", "1", "2" } }, |
| { INDEX_op_divu2_i32, { "r", "r", "r", "1", "2" } }, |
| { INDEX_op_and_i32, { "r", "r", "r" } }, |
| { INDEX_op_or_i32, { "r", "r", "r" } }, |
| { INDEX_op_xor_i32, { "r", "r", "r" } }, |
| { INDEX_op_neg_i32, { "r", "r" } }, |
| |
| { INDEX_op_shl_i32, { "r", "r", "ri" } }, |
| { INDEX_op_shr_i32, { "r", "r", "ri" } }, |
| { INDEX_op_sar_i32, { "r", "r", "ri" } }, |
| |
| { INDEX_op_brcond_i32, { "r", "r" } }, |
| |
| /* TODO: "r", "r", "r", "r", "ri", "ri" */ |
| { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } }, |
| { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } }, |
| { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } }, |
| |
| { INDEX_op_qemu_ld8u, { "r", "x", "X" } }, |
| { INDEX_op_qemu_ld8s, { "r", "x", "X" } }, |
| { INDEX_op_qemu_ld16u, { "r", "x", "X" } }, |
| { INDEX_op_qemu_ld16s, { "r", "x", "X" } }, |
| { INDEX_op_qemu_ld32u, { "r", "x", "X" } }, |
| { INDEX_op_qemu_ld64, { "d", "r", "x", "X" } }, |
| |
| { INDEX_op_qemu_st8, { "x", "x", "X" } }, |
| { INDEX_op_qemu_st16, { "x", "x", "X" } }, |
| { INDEX_op_qemu_st32, { "x", "x", "X" } }, |
| { INDEX_op_qemu_st64, { "x", "D", "x", "X" } }, |
| |
| { INDEX_op_ext8s_i32, { "r", "r" } }, |
| { INDEX_op_ext16s_i32, { "r", "r" } }, |
| |
| { -1 }, |
| }; |
| |
| void tcg_target_init(TCGContext *s) |
| { |
| /* fail safe */ |
| if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) |
| tcg_abort(); |
| |
| tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, |
| ((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8)); |
| tcg_regset_set32(tcg_target_call_clobber_regs, 0, |
| ((2 << TCG_REG_R3) - 1) | |
| (1 << TCG_REG_R12) | (1 << TCG_REG_R14)); |
| |
| tcg_regset_clear(s->reserved_regs); |
| #ifdef SAVE_LR |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R14); |
| #endif |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8); |
| |
| tcg_add_target_add_op_defs(arm_op_defs); |
| } |
| |
| static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg, |
| int arg1, tcg_target_long arg2) |
| { |
| tcg_out_ld32u(s, COND_AL, arg, arg1, arg2); |
| } |
| |
| static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, |
| int arg1, tcg_target_long arg2) |
| { |
| tcg_out_st32(s, COND_AL, arg, arg1, arg2); |
| } |
| |
| void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) |
| { |
| if (val > 0) |
| if (val < 0x100) |
| tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val); |
| else |
| tcg_abort(); |
| else if (val < 0) { |
| if (val > -0x100) |
| tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val); |
| else |
| tcg_abort(); |
| } |
| } |
| |
| static inline void tcg_out_mov(TCGContext *s, int ret, int arg) |
| { |
| tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0)); |
| } |
| |
| static inline void tcg_out_movi(TCGContext *s, TCGType type, |
| int ret, tcg_target_long arg) |
| { |
| tcg_out_movi32(s, COND_AL, ret, arg); |
| } |
| |
| void tcg_target_qemu_prologue(TCGContext *s) |
| { |
| /* stmdb sp!, { r9 - r11, lr } */ |
| tcg_out32(s, (COND_AL << 28) | 0x092d4e00); |
| |
| tcg_out_bx(s, COND_AL, TCG_REG_R0); |
| tb_ret_addr = s->code_ptr; |
| |
| /* ldmia sp!, { r9 - r11, pc } */ |
| tcg_out32(s, (COND_AL << 28) | 0x08bd8e00); |
| } |
