131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/*
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* Copyright (c) 2017 Rob Clark <robdclark@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _ASM_H_
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#define _ASM_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include "afuc.h"
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extern int gpuver;
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/**
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* Intermediate representation for an instruction, before final encoding.
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* This mostly exists because we need to resolve label offset's in a 2nd
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* pass, but also so that parser.y doesn't really need to care so much
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* about the different encodings for 2src regs vs 1src+immed, or mnemonics
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*/
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struct asm_instruction {
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int tok;
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int dst;
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int src1;
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int src2;
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int immed;
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int shift;
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int bit;
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int xmov;
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uint32_t literal;
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const char *label;
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bool has_immed : 1;
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bool has_shift : 1;
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bool has_bit : 1;
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bool is_literal : 1;
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bool rep : 1;
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};
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struct asm_label {
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unsigned offset;
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const char *label;
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};
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struct asm_instruction *next_instr(int tok);
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void decl_label(const char *str);
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static inline uint32_t
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parse_reg(const char *str)
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{
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char *retstr;
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long int ret;
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if (!strcmp(str, "$rem"))
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return REG_REM;
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else if (!strcmp(str, "$memdata"))
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return REG_MEMDATA;
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else if (!strcmp(str, "$addr"))
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return REG_ADDR;
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else if (!strcmp(str, "$regdata"))
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return REG_REGDATA;
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else if (!strcmp(str, "$usraddr"))
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return REG_USRADDR;
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else if (!strcmp(str, "$data"))
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return 0x1f;
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ret = strtol(str + 1, &retstr, 16);
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if (*retstr != '\0') {
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printf("invalid register: %s\n", str);
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exit(2);
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}
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return ret;
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}
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static inline uint32_t
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parse_literal(const char *str)
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{
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char *retstr;
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long int ret;
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ret = strtol(str + 1, &retstr, 16);
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if (*retstr != ']') {
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printf("invalid literal: %s\n", str);
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exit(2);
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}
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return ret;
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}
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static inline uint32_t
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parse_bit(const char *str)
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{
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return strtol(str + 1, NULL, 10);
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}
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unsigned parse_control_reg(const char *name);
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/* string trailing ':' off label: */
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static inline const char *
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parse_label_decl(const char *str)
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{
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char *s = strdup(str);
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s[strlen(s) - 1] = '\0';
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return s;
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}
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void yyset_in(FILE *_in_str);
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#endif /* _ASM_H_ */
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