Mercurial > repos > blastem
view disasm.c @ 2321:2eda5f81f91e
More fully baked ROM db support for SMS
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 15 Jun 2023 09:36:11 -0700 |
parents | 4e27c36f947c |
children | e9bc45dd2eed |
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#include "disasm.h" #include <stdlib.h> #include <string.h> #include <stddef.h> label_def *find_label(disasm_context *context, uint32_t address) { char key[MAX_INT_KEY_SIZE]; tern_sortable_int_key(address & context->address_mask, key); return tern_find_ptr(context->labels, key); } int format_label(char *dst, uint32_t address, disasm_context *context) { label_def *def = find_label(context, address); if (def && def->num_labels) { return sprintf(dst, "%s", def->labels[0]); } return sprintf(dst, "ADR_%X", address); } label_def *add_find_label(disasm_context *context, uint32_t address) { char key[MAX_INT_KEY_SIZE]; tern_sortable_int_key(address & context->address_mask, key); label_def *def = tern_find_ptr(context->labels, key); if (!def) { def = calloc(1, sizeof(label_def)); context->labels = tern_insert_ptr(context->labels, key, def); } def->full_address = address; return def; } void weak_label(disasm_context *context, const char *name, uint32_t address) { label_def *def = add_find_label(context, address); if (def->num_labels == def->storage) { def->storage = def->storage ? def->storage * 2 : 4; def->labels = realloc(def->labels, def->storage * sizeof(char*));; } def->labels[def->num_labels++] = strdup(name); } void reference(disasm_context *context, uint32_t address) { label_def *def = add_find_label(context, address); def->referenced = 1; } void add_label(disasm_context *context, const char *name, uint32_t address) { reference(context, address); weak_label(context, name, address); } void visit(disasm_context *context, uint32_t address) { if (!context->visited) { uint32_t size = context->address_mask + 1; size >>= context->visit_preshift; size >>= 3; context->visited = calloc(1, size); } address &= context->address_mask; address >>= context->visit_preshift; context->visited[address >> 3] |= 1 << (address & 7); } uint8_t is_visited(disasm_context *context, uint32_t address) { if (!context->visited) { return 0; } address &= context->address_mask; address >>= context->visit_preshift; return (context->visited[address >> 3] & (1 << (address & 7))) != 0; } void defer_disasm(disasm_context *context, uint32_t address) { if (is_visited(context, address) || address & context->invalid_inst_addr_mask) { return; } context->deferred = defer_address(context->deferred, address, NULL); } void process_m68k_vectors(disasm_context *context, uint16_t *table, uint8_t labels_only) { static const char* names[] = { "access_fault", "address_error", "illegal_instruction", "integer_divide_by_zero", "chk_exception", "trap_exception", "privilege_violation", "trace_exception", "line_1010_emulator", "line_1111_emulator" }; uint32_t address = table[2] << 16 | table[3]; add_label(context, "start", address); if (!labels_only) { defer_disasm(context, address); } for (int i = 0; i < sizeof(names)/sizeof(*names); i++) { address = table[i*2+4] << 16 | table[i*2 + 5]; add_label(context, names[i], address); if (!labels_only) { defer_disasm(context, address); } } char int_name[] = "int_0"; for (int i = 0; i < 7; i++) { int_name[4] = '1' + i; address = table[i*2+50] << 16 | table[i*2 + 51]; add_label(context, int_name, address); if (!labels_only) { defer_disasm(context, address); } } char trap_name[] = "trap_0"; for (int i = 0; i < 16; i++) { trap_name[5] = i < 0xA ? '0' + i : 'a' + i - 0xA; address = table[i*2+50] << 16 | table[i*2 + 51]; add_label(context, trap_name, address); if (!labels_only) { defer_disasm(context, address); } } } void add_segacd_maincpu_labels(disasm_context *context) { weak_label(context, "_bios_reset", 0x280); weak_label(context, "_bios_entry", 0x284); weak_label(context, "_bios_init", 0x288); weak_label(context, "_bios_init_sp", 0x28C); weak_label(context, "_bios_vint", 0x290); weak_label(context, "_bios_set_hint", 0x294); weak_label(context, "_bios_poll_io", 0x298); weak_label(context, "_bios_detect_io", 0x29C); weak_label(context, "_bios_clear_vram", 0x2A0); weak_label(context, "_bios_clear_nmtbl", 0x2A4); weak_label(context, "_bios_clear_vsram", 0x2A8); weak_label(context, "_bios_init_vdp", 0x2AC); weak_label(context, "_bios_vdp_loadregs", 0x2B0); weak_label(context, "_bios_vdp_fill", 0x2B4); weak_label(context, "_bios_clear_vram_range", 0x2B8); weak_label(context, "_bios_clear_vram_range_dma", 0x2BC); weak_label(context, "_bios_vram_dma_fill", 0x2C0); weak_label(context, "_bios_update_nmtbl", 0x2C4); weak_label(context, "_bios_update_nmtbl_template", 0x2C8); weak_label(context, "_bios_fill_nmtbl", 0x2CC); weak_label(context, "_bios_vdp_dma", 0x2D0); weak_label(context, "_bios_vdp_dma_wordram", 0x2D4); weak_label(context, "_bios_vdp_display_enable", 0x2D8); weak_label(context, "_bios_vdp_display_disable", 0x2DC); weak_label(context, "_bios_pal_buffer", 0x2E0); weak_label(context, "_bios_pal_buffer_update", 0x2E4); weak_label(context, "_bios_pal_dma", 0x2E8); weak_label(context, "_bios_gfx_decomp", 0x2EC); weak_label(context, "_bios_gfx_decomp_ram", 0x2F0); weak_label(context, "_bios_update_sprites", 0x2F4); weak_label(context, "_bios_clear_ram", 0x2F8); weak_label(context, "_bios_display_sprite", 0x300); weak_label(context, "_bios_wait_vint", 0x304); weak_label(context, "_bios_wait_vint_flags", 0x308); weak_label(context, "_bios_dma_sat", 0x30C); weak_label(context, "_bios_set_hint_direct", 0x314); weak_label(context, "_bios_disable_hint", 0x318); weak_label(context, "_bios_print", 0x31C); weak_label(context, "_bios_load_user_font", 0x320); weak_label(context, "_bios_load_bios_font", 0x324); weak_label(context, "_bios_load_bios_font_default", 0x328); //TODO: more functions in the middle here weak_label(context, "_bios_prng_mod", 0x338); weak_label(context, "_bios_prng", 0x33C); weak_label(context, "_bios_clear_comm", 0x340); weak_label(context, "_bios_comm_update", 0x344); //TODO: more functions in the middle here weak_label(context, "_bios_sega_logo", 0x364); weak_label(context, "_bios_set_vint", 0x368); //TODO: more functions at the end here weak_label(context, "WORD_RAM", 0x200000); weak_label(context, "CD_RESET_IFL2", 0xA12000); weak_label(context, "CD_RESET_IFL2_BYTE", 0xA12001); weak_label(context, "CD_WRITE_PROTECT", 0xA12002); weak_label(context, "CD_MEM_MODE", 0xA12003); weak_label(context, "CDC_CTRL", 0xA12004); weak_label(context, "HINT_VECTOR", 0xA12006); weak_label(context, "CDC_HOST_DATA", 0xA12008); weak_label(context, "STOP_WATCH", 0xA1200C); weak_label(context, "COMM_MAIN_FLAG", 0xA1200E); weak_label(context, "COMM_SUB_FLAG", 0xA1200F); weak_label(context, "COMM_CMD0", 0xA12010); weak_label(context, "COMM_CMD1", 0xA12012); weak_label(context, "COMM_CMD2", 0xA12014); weak_label(context, "COMM_CMD3", 0xA12016); weak_label(context, "COMM_CMD4", 0xA12018); weak_label(context, "COMM_CMD5", 0xA1201A); weak_label(context, "COMM_CMD6", 0xA1201C); weak_label(context, "COMM_CMD7", 0xA1201E); weak_label(context, "COMM_STATUS0", 0xA12020); weak_label(context, "COMM_STATUS1", 0xA12022); weak_label(context, "COMM_STATUS2", 0xA12024); weak_label(context, "COMM_STATUS3", 0xA12026); weak_label(context, "COMM_STATUS4", 0xA12028); weak_label(context, "COMM_STATUS5", 0xA1202A); weak_label(context, "COMM_STATUS6", 0xA1202C); weak_label(context, "COMM_STATUS7", 0xA1202E); } void add_segacd_subcpu_labels(disasm_context *context) { weak_label(context, "bios_common_work", 0x5E80); weak_label(context, "_setjmptbl", 0x5F0A); weak_label(context, "_waitvsync", 0x5F10); weak_label(context, "_buram", 0x5F16); weak_label(context, "_cdboot", 0x5F1C); weak_label(context, "_cdbios", 0x5F22); weak_label(context, "_usercall0", 0x5F28); weak_label(context, "_usercall1", 0x5F2E); weak_label(context, "_usercall2", 0x5F34); weak_label(context, "_usercall2Address", 0x5F36); weak_label(context, "_usercall3", 0x5F3A); weak_label(context, "_adrerr", 0x5F40); weak_label(context, "_adrerrAddress", 0x5F42); weak_label(context, "_coderr", 0x5F46); weak_label(context, "_coderrAddress", 0x5F48); weak_label(context, "_diverr", 0x5F4C); weak_label(context, "_diverrAddress", 0x5F4E); weak_label(context, "_chkerr", 0x5F52); weak_label(context, "_chkerrAddress", 0x5F54); weak_label(context, "_trperr", 0x5F58); weak_label(context, "_trperrAddress", 0x5F5A); weak_label(context, "_spverr", 0x5F5E); weak_label(context, "_spverrAddress", 0x5F60); weak_label(context, "_trace", 0x5F64); weak_label(context, "_traceAddress", 0x5F66); weak_label(context, "_nocod0", 0x5F6A); weak_label(context, "_nocod0Address", 0x5F6C); weak_label(context, "_nocod0", 0x5F70); weak_label(context, "_nocod0Address", 0x5F72); weak_label(context, "_slevel1", 0x5F76); weak_label(context, "_slevel1Address", 0x5F78); weak_label(context, "_slevel2", 0x5F7C); weak_label(context, "_slevel2Address", 0x5F7E); weak_label(context, "_slevel3", 0x5F82); weak_label(context, "_slevel3Address", 0x5F84); weak_label(context, "WORD_RAM_2M", 0x80000); weak_label(context, "WORD_RAM_1M", 0xC0000); weak_label(context, "LED_CONTROL", 0xFFFF8000); weak_label(context, "VERSION_RESET", 0xFFFF8001); weak_label(context, "MEM_MODE_WORD", 0xFFFF8002); weak_label(context, "MEM_MODE_BYTE", 0xFFFF8003); weak_label(context, "CDC_CTRL", 0xFFFF8004); weak_label(context, "CDC_AR", 0xFFFF8005); weak_label(context, "CDC_REG_DATA_WORD", 0xFFFF8006); weak_label(context, "CDC_REG_DATA", 0xFFFF8007); weak_label(context, "CDC_HOST_DATA", 0xFFFF8008); weak_label(context, "CDC_DMA_ADDR", 0xFFFF800A); weak_label(context, "STOP_WATCH", 0xFFFF800C); weak_label(context, "COMM_MAIN_FLAG", 0xFFFF800E); weak_label(context, "COMM_SUB_FLAG", 0xFFFF800F); weak_label(context, "COMM_CMD0", 0xFFFF8010); weak_label(context, "COMM_CMD1", 0xFFFF8012); weak_label(context, "COMM_CMD2", 0xFFFF8014); weak_label(context, "COMM_CMD3", 0xFFFF8016); weak_label(context, "COMM_CMD4", 0xFFFF8018); weak_label(context, "COMM_CMD5", 0xFFFF801A); weak_label(context, "COMM_CMD6", 0xFFFF801C); weak_label(context, "COMM_CMD7", 0xFFFF801E); weak_label(context, "COMM_STATUS0", 0xFFFF8020); weak_label(context, "COMM_STATUS1", 0xFFFF8022); weak_label(context, "COMM_STATUS2", 0xFFFF8024); weak_label(context, "COMM_STATUS3", 0xFFFF8026); weak_label(context, "COMM_STATUS4", 0xFFFF8028); weak_label(context, "COMM_STATUS5", 0xFFFF802A); weak_label(context, "COMM_STATUS6", 0xFFFF802C); weak_label(context, "COMM_STATUS7", 0xFFFF802E); weak_label(context, "TIMER_WORD", 0xFFFF8030); weak_label(context, "TIMER", 0xFFFF8031); weak_label(context, "INT_MASK_WORD", 0xFFFF8032); weak_label(context, "INT_MASK", 0xFFFF8033); weak_label(context, "CDD_FADER", 0xFFFF8034); weak_label(context, "CDD_CTRL_WORD", 0xFFFF8036); weak_label(context, "CDD_CTRL_BYTE", 0xFFFF8037); } disasm_context *create_68000_disasm(void) { disasm_context *context = calloc(1, sizeof(disasm_context)); context->address_mask = 0xFFFFFF; context->invalid_inst_addr_mask = 1; context->visit_preshift = 1; return context; } disasm_context *create_z80_disasm(void) { disasm_context *context = calloc(1, sizeof(disasm_context)); context->address_mask = 0xFFFF; context->invalid_inst_addr_mask = 0; context->visit_preshift = 0; return context; }