diff options
Diffstat (limited to 'x86')
| -rw-r--r-- | x86/x86_stub.S | 85 |
1 files changed, 37 insertions, 48 deletions
diff --git a/x86/x86_stub.S b/x86/x86_stub.S index 595a789..9dd3fdd 100644 --- a/x86/x86_stub.S +++ b/x86/x86_stub.S @@ -16,21 +16,18 @@ # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +#include "../gpsp_config.h" + .align 4 +#define defsymbl(symbol) \ +.global symbol ; \ +.global _##symbol ; \ +symbol: \ +_##symbol: + #ifndef _WIN32 -#define _x86_update_gba x86_update_gba -#define _x86_indirect_branch_arm x86_indirect_branch_arm -#define _x86_indirect_branch_thumb x86_indirect_branch_thumb -#define _x86_indirect_branch_dual x86_indirect_branch_dual -#define _execute_store_u8 execute_store_u8 -#define _execute_store_u16 execute_store_u16 -#define _execute_store_u32 execute_store_u32 -#define _execute_store_cpsr execute_store_cpsr -#define _execute_arm_translate execute_arm_translate -#define _memory_map_read memory_map_read -#define _reg reg -#define _reg_mode reg_mode +# External symbols (data + functions) #define _oam_update oam_update #define _iwram iwram #define _ewram ewram @@ -38,7 +35,6 @@ #define _oam_ram oam_ram #define _bios_rom bios_rom #define _io_registers io_registers -#define _spsr spsr #define _update_gba update_gba #define _block_lookup_address_arm block_lookup_address_arm @@ -47,8 +43,6 @@ #define _write_io_register8 write_io_register8 #define _write_io_register16 write_io_register16 #define _write_io_register32 write_io_register32 -#define _palette_ram palette_ram -#define _palette_ram_converted palette_ram_converted #define _flush_translation_cache_ram flush_translation_cache_ram #define _write_eeprom write_eeprom #define _write_backup write_backup @@ -56,25 +50,7 @@ #define _execute_store_cpsr_body execute_store_cpsr_body #endif -.global _x86_update_gba -.global _x86_indirect_branch_arm -.global _x86_indirect_branch_thumb -.global _x86_indirect_branch_dual -.global _execute_store_u8 -.global _execute_store_u16 -.global _execute_store_u32 -.global _execute_store_cpsr -.global _execute_arm_translate - -.global _memory_map_read -.global _reg -.global _reg_mode -.global _spsr -.global _palette_ram -.global _palette_ram_converted - .global _oam_update - .global _iwram .global _ewram .global _vram @@ -147,7 +123,7 @@ st: .asciz "u\n" -_x86_update_gba: +defsymbl(x86_update_gba) mov %eax, REG_PC(%ebx) # current PC = eax collapse_flags # update cpsr, trashes ecx and edx @@ -171,14 +147,14 @@ _x86_update_gba: # eax: GBA address to branch to # edi: Cycle counter -_x86_indirect_branch_arm: +defsymbl(x86_indirect_branch_arm) call _block_lookup_address_arm jmp *%eax # For indirect branches that'll definitely go to Thumb. In # Thumb mode any indirect branches except for BX. -_x86_indirect_branch_thumb: +defsymbl(x86_indirect_branch_thumb) call _block_lookup_address_thumb jmp *%eax @@ -186,7 +162,7 @@ _x86_indirect_branch_thumb: # mainly BX (also data processing to PC with S bit set, be # sure to adjust the target with a 1 in the lowest bit for this) -_x86_indirect_branch_dual: +defsymbl(x86_indirect_branch_dual) call _block_lookup_address_dual jmp *%eax @@ -297,7 +273,7 @@ ext_store_u8_jtable: # edx: value to write # ecx: current pc -_execute_store_u8: +defsymbl(execute_store_u8) mov %ecx, REG_PC(%ebx) # write out the PC mov %eax, %ecx # ecx = address shr $24, %ecx # ecx = address >> 24 @@ -383,7 +359,7 @@ ext_store_u16_jtable: .long ext_store_eeprom # 0x0D EEPROM (possibly) .long ext_store_ignore # 0x0E Flash ROM/SRAM must be 8bit -_execute_store_u16: +defsymbl(execute_store_u16) mov %ecx, REG_PC(%ebx) # write out the PC and $~0x01, %eax # fix alignment mov %eax, %ecx # ecx = address @@ -400,6 +376,7 @@ ext_store_iwram32: and $0x7FFF, %eax # wrap around address mov %edx, (_iwram+0x8000)(%eax) # perform store cmpl $0, _iwram(%eax) # Check SMC mirror + jne smc_write ret @@ -456,7 +433,7 @@ ext_store_u32_jtable: .long ext_store_ignore # 0x0E Flash ROM/SRAM must be 8bit -_execute_store_u32: +defsymbl(execute_store_u32) mov %ecx, REG_PC(%ebx) # write out the PC and $~0x03, %eax # fix alignment mov %eax, %ecx # ecx = address @@ -470,7 +447,7 @@ _execute_store_u32: # %eax = new_cpsr # %edx = store_mask -_execute_store_cpsr: +defsymbl(execute_store_cpsr) mov %edx, REG_SAVE(%ebx) # save store_mask mov %ecx, REG_SAVE2(%ebx) # save PC too @@ -515,7 +492,7 @@ lookup_pc_arm: # eax: cycle counter -_execute_arm_translate: +defsymbl(execute_arm_translate) # Save main context, since we need to return gracefully pushl %ebx pushl %esi @@ -556,18 +533,30 @@ return_to_main: .data .align 64 -_reg: +defsymbl(reg) .space 0x100, 0 -_palette_ram: +defsymbl(palette_ram) .space 0x400 -_palette_ram_converted: +defsymbl(palette_ram_converted) .space 0x400 -_spsr: +defsymbl(spsr) .space 24 -_reg_mode: +defsymbl(reg_mode) .space 196 -_memory_map_read: +defsymbl(memory_map_read) .space 0x8000 +#if !defined(HAVE_MMAP) + +# Make this section executable! +.text +.section .jit,"awx",%nobits +.align 4 +defsymbl(rom_translation_cache) + .space ROM_TRANSLATION_CACHE_SIZE +defsymbl(ram_translation_cache) + .space RAM_TRANSLATION_CACHE_SIZE + +#endif |