Mercurial > repos > blastem
view gen_arm.c @ 2490:a0837ea61fda
Get static images working in GL mode
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Wed, 17 Apr 2024 21:54:44 -0700 |
parents | 724bbec47f86 |
children |
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/* Copyright 2014 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "gen_arm.h" #include "mem.h" #include <stdio.h> #include <stdlib.h> #define OP_FIELD_SHIFT 21u //Data processing format instructions #define OP_AND 0x0u #define OP_EOR (0x1u << OP_FIELD_SHIFT) #define OP_SUB (0x2u << OP_FIELD_SHIFT) #define OP_RSB (0x3u << OP_FIELD_SHIFT) #define OP_ADD (0x4u << OP_FIELD_SHIFT) #define OP_ADC (0x5u << OP_FIELD_SHIFT) #define OP_SBC (0x6u << OP_FIELD_SHIFT) #define OP_RSC (0x7u << OP_FIELD_SHIFT) #define OP_TST (0x8u << OP_FIELD_SHIFT) #define OP_TEQ (0x9u << OP_FIELD_SHIFT) #define OP_CMP (0xAu << OP_FIELD_SHIFT) #define OP_CMN (0xBu << OP_FIELD_SHIFT) #define OP_ORR (0xCu << OP_FIELD_SHIFT) #define OP_MOV (0xDu << OP_FIELD_SHIFT) #define OP_BIC (0xEu << OP_FIELD_SHIFT) #define OP_MVN (0xFu << OP_FIELD_SHIFT) //branch instructions #define OP_B 0xA000000u #define OP_BL 0xB000000u #define OP_BX 0x12FFF10u //load/store #define OP_STR 0x4000000u #define OP_LDR 0x4100000u #define OP_STM 0x8000000u #define OP_LDM 0x8100000u #define POST_IND 0u #define PRE_IND 0x1000000u #define DIR_DOWN 0u #define DIR_UP 0x0800000u #define SZ_W 0u #define SZ_B 0x0400000u #define WRITE_B 0x0200000u #define OFF_IMM 0u #define OFF_REG 0x2000000u #define PUSH (OP_STR | PRE_IND | OFF_IMM | SZ_W | WRITE_B | DIR_DOWN | sizeof(uint32_t) | (sp << 16)) #define POP (OP_LDR | POST_IND | OFF_IMM | SZ_W | DIR_UP | sizeof(uint32_t) | (sp << 16)) #define PUSHM (OP_STM | PRE_IND | SZ_W | WRITE_B | DIR_DOWN | (sp << 16)) #define POPM (OP_LDM | POST_IND | SZ_W | WRITE_B | DIR_UP | (sp << 16)) #define IMMED 0x2000000u #define REG 0u uint32_t make_immed(uint32_t val) { uint32_t rot_amount = 0; for (; rot_amount < 0x20; rot_amount += 2) { uint32_t test_mask = ~(0xFF << rot_amount | 0xFF >> (32-rot_amount)); if (!(test_mask & val)) { return val << rot_amount | val >> (32-rot_amount) | rot_amount << 7; } } return INVALID_IMMED; } void check_alloc_code(code_info *code) { if (code->cur == code->last) { size_t size = CODE_ALLOC_SIZE; uint32_t *next_code = alloc_code(&size); if (!next_code) { fatal_error("Failed to allocate memory for generated code\n"); } if (next_code = code->last + RESERVE_WORDS) { //new chunk is contiguous with the current one code->last = next_code + size/sizeof(code_word) - RESERVE_WORDS; } else { uint32_t * from = code->cur + 2; if (next_code - from < 0x400000 || from - next_code <= 0x400000) { *from = CC_AL | OP_B | ((next_code - from) & 0xFFFFFF); } else { //push r0 onto the stack *(from++) = CC_AL | PUSH; uint32_t immed = make_immed((uint32_t)next_code); if (immed == INVALID_IMMED) { //Load target into r0 from word after next instruction into register 0 *(from++) = CC_AL | OP_LDR | OFF_IMM | DIR_DOWN | PRE_IND | SZ_W | (pc << 16) | 4; from[1] = (uint32_t)next_code; } else { //Load target into r0 *(from++) = CC_AL | OP_MOV | IMMED | NO_COND | immed; } //branch to address in r0 *from = CC_AL | OP_BX; code->last = next_code + size/sizeof(code_word) - RESERVE_WORDS; //pop r0 *(next_code++) = CC_AL | POP; code->cur = next_code; } } } } uint32_t data_proc(code_info *code, uint32_t cond, uint32_t op, uint32_t set_cond, uint32_t dst, uint32_t src1, uint32_t src2) { check_alloc_code(code); *(code->cur++) = cond | op | set_cond | (src1 << 16) | (dst << 12) | src2; return CODE_OK; } uint32_t data_proci(code_info *code, uint32_t cond, uint32_t op, uint32_t set_cond, uint32_t dst, uint32_t src1, uint32_t immed) { immed = make_immed(immed); if (immed == INVALID_IMMED) { return immed; } return data_proc(code, cond, op | IMMED, set_cond, dst, src1, immed); } //TODO: support shifted register for op2 uint32_t and(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_AND, set_cond, dst, src1, src2); } uint32_t andi(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_AND, set_cond, dst, src1, immed); } uint32_t and_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_AND, set_cond, dst, src1, src2); } uint32_t andi_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_AND, set_cond, dst, src1, immed); } uint32_t eor(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_EOR, set_cond, dst, src1, src2); } uint32_t eori(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_EOR, set_cond, dst, src1, immed); } uint32_t eor_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_EOR, set_cond, dst, src1, src2); } uint32_t eori_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_EOR, set_cond, dst, src1, immed); } uint32_t sub(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_SUB, set_cond, dst, src1, src2); } uint32_t subi(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_SUB, set_cond, dst, src1, immed); } uint32_t sub_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_SUB, set_cond, dst, src1, src2); } uint32_t subi_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_SUB, set_cond, dst, src1, immed); } uint32_t rsb(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_RSB, set_cond, dst, src1, src2); } uint32_t rsbi(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_RSB, set_cond, dst, src1, immed); } uint32_t rsb_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_RSB, set_cond, dst, src1, src2); } uint32_t rsbi_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_RSB, set_cond, dst, src1, immed); } uint32_t add(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_ADD, set_cond, dst, src1, src2); } uint32_t addi(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_ADD, set_cond, dst, src1, immed); } uint32_t add_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_ADD, set_cond, dst, src1, src2); } uint32_t addi_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_ADD, set_cond, dst, src1, immed); } uint32_t adc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_ADC, set_cond, dst, src1, src2); } uint32_t adci(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_ADC, set_cond, dst, src1, immed); } uint32_t adc_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_ADC, set_cond, dst, src1, src2); } uint32_t adci_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_ADC, set_cond, dst, src1, immed); } uint32_t sbc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_SBC, set_cond, dst, src1, src2); } uint32_t sbci(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_SBC, set_cond, dst, src1, immed); } uint32_t sbc_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_SBC, set_cond, dst, src1, src2); } uint32_t sbci_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_SBC, set_cond, dst, src1, immed); } uint32_t rsc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_RSC, set_cond, dst, src1, src2); } uint32_t rsci(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_RSC, set_cond, dst, src1, immed); } uint32_t rsc_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_RSC, set_cond, dst, src1, src2); } uint32_t rsci_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_RSC, set_cond, dst, src1, immed); } uint32_t tst(code_info *code, uint32_t src1, uint32_t src2) { return data_proc(code, CC_AL, OP_TST, SET_COND, r0, src1, src2); } uint32_t tsti(code_info *code, uint32_t src1, uint32_t immed) { return data_proci(code, CC_AL, OP_TST, SET_COND, r0, src1, immed); } uint32_t tst_cc(code_info *code, uint32_t src1, uint32_t src2, uint32_t cc) { return data_proc(code, cc, OP_TST, SET_COND, r0, src1, src2); } uint32_t tsti_cc(code_info *code, uint32_t src1, uint32_t immed, uint32_t cc) { return data_proci(code, cc, OP_TST, SET_COND, r0, src1, immed); } uint32_t teq(code_info *code, uint32_t src1, uint32_t src2) { return data_proc(code, CC_AL, OP_TEQ, SET_COND, r0, src1, src2); } uint32_t teqi(code_info *code, uint32_t src1, uint32_t immed) { return data_proci(code, CC_AL, OP_TEQ, SET_COND, r0, src1, immed); } uint32_t teq_cc(code_info *code, uint32_t src1, uint32_t src2, uint32_t cc) { return data_proc(code, cc, OP_TEQ, SET_COND, r0, src1, src2); } uint32_t teqi_cc(code_info *code, uint32_t src1, uint32_t immed, uint32_t cc) { return data_proci(code, cc, OP_TEQ, SET_COND, r0, src1, immed); } uint32_t cmp(code_info *code, uint32_t src1, uint32_t src2) { return data_proc(code, CC_AL, OP_CMP, SET_COND, r0, src1, src2); } uint32_t cmpi(code_info *code, uint32_t src1, uint32_t immed) { return data_proci(code, CC_AL, OP_CMP, SET_COND, r0, src1, immed); } uint32_t cmp_cc(code_info *code, uint32_t src1, uint32_t src2, uint32_t cc) { return data_proc(code, cc, OP_CMP, SET_COND, r0, src1, src2); } uint32_t cmpi_cc(code_info *code, uint32_t src1, uint32_t immed, uint32_t cc) { return data_proci(code, cc, OP_CMP, SET_COND, r0, src1, immed); } uint32_t cmn(code_info *code, uint32_t src1, uint32_t src2) { return data_proc(code, CC_AL, OP_CMN, SET_COND, r0, src1, src2); } uint32_t cmni(code_info *code, uint32_t src1, uint32_t immed) { return data_proci(code, CC_AL, OP_CMN, SET_COND, r0, src1, immed); } uint32_t cmn_cc(code_info *code, uint32_t src1, uint32_t src2, uint32_t cc) { return data_proc(code, cc, OP_CMN, SET_COND, r0, src1, src2); } uint32_t cmni_cc(code_info *code, uint32_t src1, uint32_t immed, uint32_t cc) { return data_proci(code, cc, OP_CMN, SET_COND, r0, src1, immed); } uint32_t orr(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_ORR, set_cond, dst, src1, src2); } uint32_t orri(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_ORR, set_cond, dst, src1, immed); } uint32_t orr_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_ORR, set_cond, dst, src1, src2); } uint32_t orri_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_ORR, set_cond, dst, src1, immed); } uint32_t mov(code_info *code, uint32_t dst, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_MOV, set_cond, dst, 0, src2); } uint32_t movi(code_info *code, uint32_t dst, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_MOV, set_cond, dst, 0, immed); } uint32_t mov_cc(code_info *code, uint32_t dst, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_MOV, set_cond, dst, 0, src2); } uint32_t movi_cc(code_info *code, uint32_t dst, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_MOV, set_cond, dst, 0, immed); } uint32_t bic(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_BIC, set_cond, dst, src1, src2); } uint32_t bici(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_BIC, set_cond, dst, src1, immed); } uint32_t bic_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_BIC, set_cond, dst, src1, src2); } uint32_t bici_cc(code_info *code, uint32_t dst, uint32_t src1, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_BIC, set_cond, dst, src1, immed); } uint32_t mvn(code_info *code, uint32_t dst, uint32_t src2, uint32_t set_cond) { return data_proc(code, CC_AL, OP_MVN, set_cond, dst, 0, src2); } uint32_t mvni(code_info *code, uint32_t dst, uint32_t immed, uint32_t set_cond) { return data_proci(code, CC_AL, OP_MVN, set_cond, dst, 0, immed); } uint32_t mvn_cc(code_info *code, uint32_t dst, uint32_t src2, uint32_t cc, uint32_t set_cond) { return data_proc(code, cc, OP_MVN, set_cond, dst, 0, src2); } uint32_t mvni_cc(code_info *code, uint32_t dst, uint32_t immed, uint32_t cc, uint32_t set_cond) { return data_proci(code, cc, OP_MVN, set_cond, dst, 0, immed); } uint32_t branchi(code_info *code, uint32_t cc, uint32_t op, uint32_t *dst) { uint32_t * from = code->cur + 2; if (dst - from >= 0x400000 && from - dst > 0x400000) { return INVALID_IMMED; } check_alloc_code(code); *(code->cur++) = cc | op | ((dst - from) & 0xFFFFFF); return CODE_OK; } uint32_t b(code_info *code, uint32_t *dst) { return branchi(code, CC_AL, OP_B, dst); } uint32_t b_cc(code_info *code, uint32_t *dst, uint32_t cc) { return branchi(code, cc, OP_B, dst); } uint32_t bl(code_info *code, uint32_t *dst) { return branchi(code, CC_AL, OP_BL, dst); } uint32_t bl_cc(code_info *code, uint32_t *dst, uint32_t cc) { return branchi(code, cc, OP_BL, dst); } uint32_t bx(code_info *code, uint32_t dst) { check_alloc_code(code); *(code->cur++) = CC_AL | OP_BX | dst; return CODE_OK; } uint32_t bx_cc(code_info *code, uint32_t dst, uint32_t cc) { check_alloc_code(code); *(code->cur++) = cc | OP_BX | dst; return CODE_OK; } uint32_t push(code_info *code, uint32_t reg) { check_alloc_code(code); *(code->cur++) = CC_AL | PUSH | reg << 12; return CODE_OK; } uint32_t push_cc(code_info *code, uint32_t reg, uint32_t cc) { check_alloc_code(code); *(code->cur++) = cc | PUSH | reg << 12; return CODE_OK; } uint32_t pushm(code_info *code, uint32_t reglist) { check_alloc_code(code); *(code->cur++) = CC_AL | PUSHM | reglist; return CODE_OK; } uint32_t pushm_cc(code_info *code, uint32_t reglist, uint32_t cc) { check_alloc_code(code); *(code->cur++) = cc | PUSHM | reglist; return CODE_OK; } uint32_t pop(code_info *code, uint32_t reg) { check_alloc_code(code); *(code->cur++) = CC_AL | POP | reg << 12; return CODE_OK; } uint32_t pop_cc(code_info *code, uint32_t reg, uint32_t cc) { check_alloc_code(code); *(code->cur++) = cc | POP | reg << 12; return CODE_OK; } uint32_t popm(code_info *code, uint32_t reglist) { check_alloc_code(code); *(code->cur++) = CC_AL | POPM | reglist; return CODE_OK; } uint32_t popm_cc(code_info *code, uint32_t reglist, uint32_t cc) { check_alloc_code(code); *(code->cur++) = cc | POPM | reglist; return CODE_OK; } uint32_t load_store_immoff(code_info *code, uint32_t op, uint32_t dst, uint32_t base, int32_t offset, uint32_t cc) { if (offset >= 0x1000 || offset <= -0x1000) { return INVALID_IMMED; } check_alloc_code(code); uint32_t instruction = cc | op | POST_IND | OFF_IMM | SZ_W | base << 16 | dst << 12; if (offset >= 0) { instruction |= offset | DIR_UP; } else { instruction |= (-offset) | DIR_DOWN; } *(code->cur++) = instruction; return CODE_OK; } uint32_t ldr_cc(code_info *code, uint32_t dst, uint32_t base, int32_t offset, uint32_t cc) { return load_store_immoff(code, OP_LDR, dst, base, offset, cc); } uint32_t ldr(code_info *code, uint32_t dst, uint32_t base, int32_t offset) { return ldr_cc(code, dst, base, offset, CC_AL); } uint32_t str_cc(code_info *code, uint32_t src, uint32_t base, int32_t offset, uint32_t cc) { return load_store_immoff(code, OP_STR, src, base, offset, cc); } uint32_t str(code_info *code, uint32_t src, uint32_t base, int32_t offset) { return str_cc(code, src, base, offset, CC_AL); }