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feat: Add support for GNU lightning JIT vm
This change adds a virtual machine implementation that uses GNU lightning to emit machine code. See #61
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| /* | ||
| * Copyright (c) 2019 Fabian Mastenbroek | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| #include <brainfuck/brainfuck.h> | ||
| #include <brainfuck/vm.h> | ||
| #include <brainfuck/ir.h> | ||
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|
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| #include <lightning.h> | ||
|
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| #include "../brainfuck.h" | ||
|
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| struct BrainfuckVmContextLightning { | ||
| struct BrainfuckVmContext base; | ||
| jit_state_t *jit; | ||
| }; | ||
|
|
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| static struct BrainfuckVmContext * alloc(struct BrainfuckVm *vm) | ||
| { | ||
| struct BrainfuckVmContextLightning *ctx = BRAINFUCK_ALLOC(sizeof(struct BrainfuckVmContextLightning)); | ||
|
|
||
| if (ctx) { | ||
| ctx->base.vm = vm; | ||
| ctx->base.memory = NULL; | ||
| ctx->base.memory_size = 0; | ||
| ctx->base.read = NULL; | ||
| ctx->base.write = NULL; | ||
|
|
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| init_jit(NULL); | ||
| ctx->jit = jit_new_state(); | ||
| } | ||
|
|
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| return (void *) ctx; | ||
| } | ||
|
|
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| static void dealloc(struct BrainfuckVmContext *ctx) | ||
| { | ||
| finish_jit(); | ||
| BRAINFUCK_DEALLOC(ctx); | ||
| } | ||
|
|
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| static struct BrainfuckInstruction * emit(struct BrainfuckVmContext *ctx, | ||
| const struct BrainfuckInstruction *inst, | ||
| jit_node_t *target_label, jit_node_t *target_jmp) | ||
| { | ||
| jit_state_t *_jit = ((struct BrainfuckVmContextLightning *) ctx)->jit; | ||
| int word_size = 4; | ||
|
|
||
| while (inst) { | ||
| switch(inst->opcode) { | ||
| case ADD: | ||
| jit_ldxi_i(JIT_R0, JIT_V0, inst->operands[0].i32 * word_size); | ||
| jit_addi(JIT_R0, JIT_R0, inst->operands[1].i32); | ||
| jit_stxi_i(inst->operands[0].i32 * word_size, JIT_V0, JIT_R0); | ||
| break; | ||
| case MOV: | ||
| jit_addi(JIT_V0, JIT_V0, inst->operands[0].i32 * word_size); | ||
| break; | ||
| case CPY: | ||
| jit_ldxi_i(JIT_R0, JIT_V0, inst->operands[0].i32 * word_size); | ||
| jit_stxi_i(inst->operands[1].i32 * word_size, JIT_V0, JIT_R0); | ||
| break; | ||
| case MUL: | ||
| jit_ldxi(JIT_R0, JIT_V0, inst->operands[0].i32 * word_size); | ||
| jit_muli(JIT_R0, JIT_R0, inst->operands[2].i8); | ||
| jit_stxi_i(inst->operands[1].i32 * word_size, JIT_V0, JIT_R0); | ||
| break; | ||
| case CLR: | ||
| jit_movi(JIT_R0, 0); | ||
| jit_stxi_i(inst->operands[0].i32 * word_size, JIT_V0, JIT_R0); | ||
| break; | ||
| case IN: | ||
| jit_prepare(); | ||
| jit_finishi(ctx->read); | ||
| jit_retval(JIT_R0); | ||
| jit_stxi_i(inst->operands[0].i32 * word_size, JIT_V0, JIT_R0); | ||
| break; | ||
| case OUT: | ||
| jit_ldxi_i(JIT_R0, JIT_V0, inst->operands[0].i32 * word_size); | ||
| jit_prepare(); | ||
| jit_pushargr(JIT_R0); | ||
| jit_finishi(ctx->write); | ||
| break; | ||
| case JNZ: { | ||
| jit_patch(target_jmp); | ||
| jit_ldr_i(JIT_R0, JIT_V0); | ||
| jit_node_t *jmp = jit_bnei(JIT_R0, 0); | ||
| jit_patch_at(jmp, target_label); | ||
| return inst->next; | ||
| } | ||
| case JMP: { | ||
| jit_node_t *jmp = jit_jmpi(); | ||
| jit_node_t *label = jit_label(); | ||
| inst = emit(ctx, inst->next, label, jmp); | ||
| continue; | ||
| } | ||
| case NOP: | ||
| break; | ||
| } | ||
| inst = inst->next; | ||
| } | ||
|
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| return NULL; | ||
| } | ||
|
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| static int run(struct BrainfuckVmContext *ctx, | ||
| const struct BrainfuckProgram *program) | ||
| { | ||
| jit_state_t *_jit = ((struct BrainfuckVmContextLightning *) ctx)->jit; | ||
| uint8_t *mem = ctx->memory; | ||
| struct BrainfuckInstruction *inst = program->head; | ||
| jit_prolog(); | ||
| jit_movi(JIT_V0, (jit_word_t) mem); | ||
| emit(ctx, inst, NULL, NULL); | ||
| jit_ret(); | ||
| jit_epilog(); | ||
| void (*run)(void) = jit_emit(); | ||
| run(); | ||
| jit_clear_state(); | ||
| return BRAINFUCK_EOK; | ||
| } | ||
|
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| struct BrainfuckVm brainfuck_vm_lightning = { | ||
| .name = "lightning", | ||
| .version = "1.0.0", | ||
| .alloc = &alloc, | ||
| .dealloc = &dealloc, | ||
| .run = &run, | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| /* | ||
| * Copyright (c) 2019 Fabian Mastenbroek | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| #ifndef BRAINFUCK_VM_LIGHTNING_H | ||
| #define BRAINFUCK_VM_LIGHTNING_H | ||
|
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| #include <brainfuck/vm.h> | ||
|
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| #ifdef BRAINFUCK_VM_LIGHTNING_ENABLED | ||
| extern struct BrainfuckVm brainfuck_vm_lightning; | ||
| #endif | ||
|
|
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| #endif /* BRAINFUCK_VM_LIGHTNING_H */ |
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