diff options
Diffstat (limited to 'assembler.c')
| -rw-r--r-- | assembler.c | 90 |
1 files changed, 44 insertions, 46 deletions
diff --git a/assembler.c b/assembler.c index 8270f01..faf7bb3 100644 --- a/assembler.c +++ b/assembler.c @@ -17,22 +17,22 @@ struct Label /* First, the functions to call external utilities (badly written, I know). They * presume a filled asm_buffer. */ -void asm_write(buffer_t **asm_buffer) +void asm_write(const char *asm_name, vec_t *asm_buffer) { - FILE *fp = fopen(asm_buffer[0]->name, "w"); - fwrite(asm_buffer[0]->data, asm_buffer[0]->size, 1, fp); + FILE *fp = fopen(asm_name, "w"); + fwrite(asm_buffer->data, asm_buffer->size, 1, fp); fclose(fp); } -int asm_assemble(const char *srcname, const char *objname) +int asm_assemble(const char *asm_name, const char *objname) { #ifdef DEBUG char *format_str = "yasm -f elf64 -g dwarf2 -o %s %s"; #else char *format_str = "yasm -f elf64 -o %s %s"; #endif - char command[snprintf(NULL, 0, format_str, objname, srcname) + 1]; - sprintf(command, format_str, objname, srcname); + char command[snprintf(NULL, 0, format_str, objname, asm_name) + 1]; + sprintf(command, format_str, objname, asm_name); return system(command); } @@ -44,45 +44,14 @@ int asm_link(const char *objname, const char *outname) return system(command); } -int asm_compile(buffer_t **asm_buffer, const char *objname, const char *outname) +int asm_compile(vec_t *asm_buffer, const char *asm_name, const char *objname, + const char *outname) { - asm_write(asm_buffer); - asm_assemble(asm_buffer[0]->name, objname); + asm_write(asm_name, asm_buffer); + asm_assemble(asm_name, objname); return asm_link(objname, outname); } -void asm_setup_buffer(buffer_t **asm_buffer, const char *outname) -{ - *asm_buffer = buffer_init_str(outname, NULL, 1024); - asm_buffer[0]->size = 0; -} - -// Write the initial boilerplate of the assembly file -void asm_write_init(buffer_t **asm_buffer) -{ - const char format_string[] = "section .bss\n" - " memory resb %d\n" - "section .text\n" - "global _start\n" - "_start:\n" - " mov r9, memory\n"; - char initial_assembly[snprintf(NULL, 0, format_string, MEMORY_DEFAULT) + 1]; - snprintf(initial_assembly, sizeof(initial_assembly), format_string, - MEMORY_DEFAULT); - buffer_append_bytes(asm_buffer, (u8 *)initial_assembly, - sizeof(initial_assembly) - 1); -} - -// Write the exit code for the assembly file -void asm_write_exit(buffer_t **asm_buffer) -{ - buffer_append_bytes(asm_buffer, - (u8 *)" mov rax, 60\n" - " mov rdi, 0\n" - " syscall\n", - 37); -} - // A table which translates brainfuck operations into generic assembly code (I // love C's array indexing) static const struct @@ -116,7 +85,13 @@ i64 get_abs_label(u64, struct Label *, u64); // and next items in given pointers. void ast_ref_to_asm_label(u64, struct Label *, u64, i64 *, i64 *); -void asm_translate_nodes(buffer_t **asm_buffer, struct PResult nodes, +// Write the initial boilerplate of the assembly file +void asm_write_init(vec_t *asm_buffer); + +// Write the exit code boilerplate for the assembly file +void asm_write_exit(vec_t *asm_buffer); + +void asm_translate_nodes(vec_t *asm_buffer, struct PResult nodes, const char *src_name) { asm_write_init(asm_buffer); @@ -175,14 +150,12 @@ void asm_translate_nodes(buffer_t **asm_buffer, struct PResult nodes, 1]; snprintf(formatted_string, sizeof(formatted_string), format_string, current_label, next_label); - buffer_append_bytes(asm_buffer, (u8 *)formatted_string, - sizeof(formatted_string) - 1); + vec_append(asm_buffer, formatted_string, sizeof(formatted_string) - 1); } else { // I love tables so goddamn much - buffer_append_bytes(asm_buffer, (u8 *)table[node.type].str, - table[node.type].len); + vec_append(asm_buffer, table[node.type].str, table[node.type].len); } } asm_write_exit(asm_buffer); @@ -206,3 +179,28 @@ void ast_ref_to_asm_label(u64 ref, struct Label *labels, u64 size, i64 *cur, return; *next = get_abs_label(labels[*cur].next, labels, size); } + +// Write the initial boilerplate of the assembly file +void asm_write_init(vec_t *asm_buffer) +{ + const char format_string[] = "section .bss\n" + " memory resb %d\n" + "section .text\n" + "global _start\n" + "_start:\n" + " mov r9, memory\n"; + char initial_assembly[snprintf(NULL, 0, format_string, MEMORY_DEFAULT) + 1]; + snprintf(initial_assembly, sizeof(initial_assembly), format_string, + MEMORY_DEFAULT); + vec_append(asm_buffer, initial_assembly, sizeof(initial_assembly) - 1); +} + +// Write the exit code for the assembly file +void asm_write_exit(vec_t *asm_buffer) +{ + vec_append(asm_buffer, + " mov rax, 60\n" + " mov rdi, 0\n" + " syscall\n", + 37); +} |