py: Add support for emitting native x86 machine code.

1 files changed, 77 insertions, 0 deletions

diff --git a/py/asmx86.h b/py/asmx86.h
new file mode 100644
index 000000000..5d0fc70e3
--- /dev/null
+++ b/py/asmx86.h
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+#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)
+
+// 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 REG_RET REG_EAX
+#define REG_ARG_1 REG_EDI
+#define REG_ARG_2 REG_ESI
+#define REG_ARG_3 REG_EDX
+
+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_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_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);