/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2014 Damien P. George * * 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. */ // x86 cdecl calling convention is: // - args passed on the stack in reverse order // - return value in EAX // - caller cleans up the stack after a call // - stack must be aligned to 16-byte boundary before all calls // - EAX, ECX, EDX are caller-save // - EBX, ESI, EDI, EBP, ESP, EIP are callee-save #define ASM_X86_PASS_COMPUTE (1) #define ASM_X86_PASS_EMIT (2) #define REG_EAX (0) #define REG_ECX (1) #define REG_EDX (2) #define REG_EBX (3) #define REG_ESP (4) #define REG_EBP (5) #define REG_ESI (6) #define REG_EDI (7) // x86 passes values on the stack, but the emitter is register based, so we need // to define registers that can temporarily hold the function arguments. They // need to be defined here so that asm_x86_call_ind can push them onto the stack // before the call. #define ASM_X86_REG_ARG_1 REG_EAX #define ASM_X86_REG_ARG_2 REG_ECX #define ASM_X86_REG_ARG_3 REG_EDX // condition codes, used for jcc and setcc (despite their j-name!) #define ASM_X86_CC_JB (0x2) // below, unsigned #define ASM_X86_CC_JZ (0x4) #define ASM_X86_CC_JE (0x4) #define ASM_X86_CC_JNZ (0x5) #define ASM_X86_CC_JNE (0x5) #define ASM_X86_CC_JL (0xc) // less, signed #define ASM_X86_CC_JG (0xf) // greater, signed typedef struct _asm_x86_t asm_x86_t; asm_x86_t* asm_x86_new(mp_uint_t max_num_labels); void asm_x86_free(asm_x86_t* as, bool free_code); void asm_x86_start_pass(asm_x86_t *as, mp_uint_t pass); void asm_x86_end_pass(asm_x86_t *as); mp_uint_t asm_x86_get_code_size(asm_x86_t* as); void* asm_x86_get_code(asm_x86_t* as); void asm_x86_mov_r32_to_r32(asm_x86_t* as, int src_r32, int dest_r32); void asm_x86_mov_i32_to_r32(asm_x86_t *as, int32_t src_i32, int dest_r32); void asm_x86_mov_i32_to_r32_aligned(asm_x86_t *as, int32_t src_i32, int dest_r32); void asm_x86_mov_r8_to_disp(asm_x86_t *as, int src_r32, int dest_r32, int dest_disp); void asm_x86_mov_r16_to_disp(asm_x86_t *as, int src_r32, int dest_r32, int dest_disp); void asm_x86_mov_r32_to_disp(asm_x86_t *as, int src_r32, int dest_r32, int dest_disp); void asm_x86_xor_r32_to_r32(asm_x86_t *as, int src_r32, int dest_r32); void asm_x86_add_r32_to_r32(asm_x86_t* as, int src_r32, int dest_r32); void asm_x86_cmp_r32_with_r32(asm_x86_t* as, int src_r32_a, int src_r32_b); void asm_x86_test_r8_with_r8(asm_x86_t* as, int src_r32_a, int src_r32_b); void asm_x86_setcc_r8(asm_x86_t* as, mp_uint_t jcc_type, int dest_r8); void asm_x86_label_assign(asm_x86_t* as, mp_uint_t label); void asm_x86_jmp_label(asm_x86_t* as, mp_uint_t label); void asm_x86_jcc_label(asm_x86_t* as, mp_uint_t jcc_type, mp_uint_t label); void asm_x86_entry(asm_x86_t* as, mp_uint_t num_locals); void asm_x86_exit(asm_x86_t* as); void asm_x86_mov_arg_to_r32(asm_x86_t *as, int src_arg_num, int dest_r32); void asm_x86_mov_local_to_r32(asm_x86_t* as, int src_local_num, int dest_r32); void asm_x86_mov_r32_to_local(asm_x86_t* as, int src_r32, int dest_local_num); void asm_x86_mov_local_addr_to_r32(asm_x86_t* as, int local_num, int dest_r32); void asm_x86_call_ind(asm_x86_t* as, void* ptr, mp_uint_t n_args, int temp_r32);