diff options
Diffstat (limited to 'x86')
| -rw-r--r-- | x86/x86_emit.h | 16 | ||||
| -rw-r--r-- | x86/x86_stub.S | 216 |
2 files changed, 101 insertions, 131 deletions
diff --git a/x86/x86_emit.h b/x86/x86_emit.h index 67a3dc2..68930e1 100644 --- a/x86/x86_emit.h +++ b/x86/x86_emit.h @@ -1485,23 +1485,13 @@ u32 function_cc execute_aligned_load32(u32 address) return read_memory32(address); } -void function_cc execute_aligned_store32(u32 address, u32 source) -{ - u8 *map; - - if(!(address & 0xF0000000) && (map = memory_map_write[address >> 15])) - address32(map, address & 0x7FFF) = source; - else - write_memory32(address, source); -} - #define arm_block_memory_load() \ generate_function_call(execute_aligned_load32); \ generate_store_reg(rv, i) \ #define arm_block_memory_store() \ generate_load_reg_pc(a1, i, 8); \ - generate_function_call(execute_aligned_store32) \ + generate_function_call(write_memory32) \ #define arm_block_memory_final_load() \ arm_block_memory_load() \ @@ -1956,7 +1946,7 @@ u32 function_cc execute_ror_imm_op(u32 value, u32 shift) #define thumb_block_memory_extra_push_lr(base_reg) \ generate_add_reg_reg_imm(a0, s0, (bit_count[reg_list] * 4)); \ generate_load_reg(a1, REG_LR); \ - generate_function_call(execute_aligned_store32) \ + generate_function_call(write_memory32) \ #define thumb_block_memory_load() \ generate_function_call(execute_aligned_load32); \ @@ -1964,7 +1954,7 @@ u32 function_cc execute_ror_imm_op(u32 value, u32 shift) #define thumb_block_memory_store() \ generate_load_reg(a1, i); \ - generate_function_call(execute_aligned_store32) \ + generate_function_call(write_memory32) \ #define thumb_block_memory_final_load() \ thumb_block_memory_load() \ diff --git a/x86/x86_stub.S b/x86/x86_stub.S index 1e338a4..333c8fd 100644 --- a/x86/x86_stub.S +++ b/x86/x86_stub.S @@ -16,30 +16,24 @@ # 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 _memory_map_write memory_map_write -#define _reg reg -#define _reg_mode reg_mode -#define _oam_update oam_update +# External symbols (data + functions) #define _iwram iwram #define _ewram ewram #define _vram vram #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 @@ -48,8 +42,6 @@ #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 @@ -57,26 +49,6 @@ #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 _memory_map_write -.global _reg -.global _reg_mode -.global _spsr -.global _palette_ram -.global _palette_ram_converted - -.global _oam_update - .global _iwram .global _ewram .global _vram @@ -101,6 +73,7 @@ .equ CPU_HALT_STATE, (30 * 4) .equ CHANGED_PC_STATUS, (31 * 4) .equ COMPLETED_FRAME, (32 * 4) +.equ OAM_UPDATED, (33 * 4) # destroys ecx and edx @@ -149,7 +122,7 @@ 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 @@ -173,14 +146,14 @@ _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 @@ -188,7 +161,7 @@ _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 @@ -231,6 +204,20 @@ ext_store_eeprom: # 8bit ext memory routines +ext_store_iwram8: + and $0x7FFF, %eax # wrap around address + mov %dl, (_iwram+0x8000)(%eax) # perform store + cmpb $0, _iwram(%eax) # Check SMC mirror + jne smc_write + ret + +ext_store_ewram8: + and $0x3FFFF, %eax # wrap around address + mov %dl, _ewram(%eax) # perform store + cmpb $0, (_ewram+0x40000)(%eax) # Check SMC mirror + jne smc_write + ret + ext_store_io8: and $0x3FF, %eax # wrap around address and $0xFF, %edx @@ -253,7 +240,7 @@ ext_store_vram8b: ret ext_store_oam8: - movl $1, _oam_update # flag OAM update + movl $1, OAM_UPDATED(%ebx) # flag OAM update and $0x3FE, %eax # wrap around address and align to 16bits mov %dl, %dh # copy lower 8bits of value into full 16bits mov %dx, _oam_ram(%eax) # perform 16bit store @@ -267,8 +254,8 @@ ext_store_backup: ext_store_u8_jtable: .long ext_store_ignore # 0x00 BIOS, ignore .long ext_store_ignore # 0x01 invalid, ignore - .long ext_store_ignore # 0x02 EWRAM, should have been hit already - .long ext_store_ignore # 0x03 IWRAM, should have been hit already + .long ext_store_ewram8 # 0x02 EWRAM + .long ext_store_iwram8 # 0x03 IWRAM .long ext_store_io8 # 0x04 I/O registers .long ext_store_palette8 # 0x05 Palette RAM .long ext_store_vram8 # 0x06 VRAM @@ -281,7 +268,12 @@ ext_store_u8_jtable: .long ext_store_eeprom # 0x0D EEPROM (possibly) .long ext_store_backup # 0x0E Flash ROM/SRAM -ext_store_u8: +# eax: address to write to +# edx: value to write +# ecx: current pc + +defsymbl(execute_store_u8) + mov %ecx, REG_PC(%ebx) # write out the PC mov %eax, %ecx # ecx = address shr $24, %ecx # ecx = address >> 24 cmp $15, %ecx @@ -290,46 +282,21 @@ ext_store_u8: mov ext_store_u8_jtable(, %ecx, 4), %ecx jmp *%ecx # jump to table index -# eax: address to write to -# edx: value to write -# ecx: current pc +# 16bit ext memory routines -_execute_store_u8: - mov %ecx, REG_PC(%ebx) # write out the PC - mov %eax, %ecx # ecx = address - test $0xF0000000, %ecx # check address range - jnz ext_store_u8 # if above perform an extended write - shr $15, %ecx # ecx = page number of address - # load the corresponding memory map offset - mov _memory_map_write(, %ecx, 4), %ecx - test %ecx, %ecx # see if it's NULL - jz ext_store_u8 # if so perform an extended write - and $0x7FFF, %eax # isolate the lower 15bits of the address - mov %dl, (%eax, %ecx) # store the value - # check for self-modifying code - testb $0xFF, -32768(%eax, %ecx) +ext_store_iwram16: + and $0x7FFF, %eax # wrap around address + mov %dx, (_iwram+0x8000)(%eax) # perform store + cmpw $0, _iwram(%eax) # Check SMC mirror jne smc_write - ret # return + ret -_execute_store_u16: - mov %ecx, REG_PC(%ebx) # write out the PC - and $~0x01, %eax # fix alignment - mov %eax, %ecx # ecx = address - test $0xF0000000, %ecx # check address range - jnz ext_store_u16 # if above perform an extended write - shr $15, %ecx # ecx = page number of address - # load the corresponding memory map offset - mov _memory_map_write(, %ecx, 4), %ecx - test %ecx, %ecx # see if it's NULL - jz ext_store_u16 # if so perform an extended write - and $0x7FFF, %eax # isolate the lower 15bits of the address - mov %dx, (%eax, %ecx) # store the value - # check for self-modifying code - testw $0xFFFF, -32768(%eax, %ecx) +ext_store_ewram16: + and $0x3FFFF, %eax # wrap around address + mov %dx, _ewram(%eax) # perform store + cmpw $0, (_ewram+0x40000)(%eax) # Check SMC mirror jne smc_write - ret # return - -# 16bit ext memory routines + ret ext_store_io16: and $0x3FF, %eax # wrap around address @@ -364,7 +331,7 @@ ext_store_vram16b: ret ext_store_oam16: - movl $1, _oam_update # flag OAM update + movl $1, OAM_UPDATED(%ebx) # flag OAM update and $0x3FF, %eax # wrap around address mov %dx, _oam_ram(%eax) # perform 16bit store ret @@ -377,8 +344,8 @@ ext_store_rtc: ext_store_u16_jtable: .long ext_store_ignore # 0x00 BIOS, ignore .long ext_store_ignore # 0x01 invalid, ignore - .long ext_store_ignore # 0x02 EWRAM, should have been hit already - .long ext_store_ignore # 0x03 IWRAM, should have been hit already + .long ext_store_ewram16 # 0x02 EWRAM + .long ext_store_iwram16 # 0x03 IWRAM .long ext_store_io16 # 0x04 I/O registers .long ext_store_palette16 # 0x05 Palette RAM .long ext_store_vram16 # 0x06 VRAM @@ -391,7 +358,9 @@ ext_store_u16_jtable: .long ext_store_eeprom # 0x0D EEPROM (possibly) .long ext_store_ignore # 0x0E Flash ROM/SRAM must be 8bit -ext_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 shr $24, %ecx # ecx = address >> 24 cmp $15, %ecx @@ -400,25 +369,22 @@ ext_store_u16: mov ext_store_u16_jtable(, %ecx, 4), %ecx jmp *%ecx # jump to table index -_execute_store_u32: - mov %ecx, REG_PC(%ebx) # write out the PC - and $~0x03, %eax # fix alignment - mov %eax, %ecx # ecx = address - test $0xF0000000, %ecx # check address range - jnz ext_store_u32 # if above perform an extended write - shr $15, %ecx # ecx = page number of address - # load the corresponding memory map offset - mov _memory_map_write(, %ecx, 4), %ecx - test %ecx, %ecx # see if it's NULL - jz ext_store_u32 # if so perform an extended write - and $0x7FFF, %eax # isolate the lower 15bits of the address - mov %edx, (%eax, %ecx) # store the value - # check for self-modifying code - testl $0xFFFFFFFF, -32768(%eax, %ecx) +# 32bit ext memory routines + +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 # return it + ret -# 32bit ext memory routines +ext_store_ewram32: + and $0x3FFFF, %eax # wrap around address + mov %edx, _ewram(%eax) # perform store + cmpl $0, (_ewram+0x40000)(%eax) # Check SMC mirror + jne smc_write + ret ext_store_io32: and $0x3FF, %eax # wrap around address @@ -443,7 +409,7 @@ ext_store_vram32b: ret ext_store_oam32: - movl $1, _oam_update # flag OAM update + movl $1, OAM_UPDATED(%ebx) # flag OAM update and $0x3FF, %eax # wrap around address mov %edx, _oam_ram(%eax) # perform 32bit store ret @@ -451,8 +417,8 @@ ext_store_oam32: ext_store_u32_jtable: .long ext_store_ignore # 0x00 BIOS, ignore .long ext_store_ignore # 0x01 invalid, ignore - .long ext_store_ignore # 0x02 EWRAM, should have been hit already - .long ext_store_ignore # 0x03 IWRAM, should have been hit already + .long ext_store_ewram32 # 0x02 EWRAM + .long ext_store_iwram32 # 0x03 IWRAM .long ext_store_io32 # 0x04 I/O registers .long ext_store_palette32 # 0x05 Palette RAM .long ext_store_vram32 # 0x06 VRAM @@ -466,7 +432,9 @@ ext_store_u32_jtable: .long ext_store_ignore # 0x0E Flash ROM/SRAM must be 8bit -ext_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 shr $24, %ecx # ecx = address >> 24 cmp $15, %ecx @@ -478,7 +446,7 @@ ext_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 @@ -507,8 +475,8 @@ smc_write: call _flush_translation_cache_ram lookup_pc: - add $4, %esp - movl $0, CHANGED_PC_STATUS(%ebx) + add $4, %esp # Can't return, discard addr + movl $0, CHANGED_PC_STATUS(%ebx) # Lookup new block and jump to it mov REG_PC(%ebx), %eax testl $0x20, REG_CPSR(%ebx) jz lookup_pc_arm @@ -523,7 +491,7 @@ 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 @@ -564,20 +532,32 @@ return_to_main: .data .align 64 -_reg: +defsymbl(reg) .space 0x100, 0 -_palette_ram: +defsymbl(palette_ram) + .space 0x400 +defsymbl(palette_ram_converted) .space 0x400 -_palette_ram_converted: +defsymbl(oam_ram) .space 0x400 -_spsr: +defsymbl(spsr) .space 24 -_reg_mode: +defsymbl(reg_mode) .space 196 -_memory_map_read: - .space 0x8000 -_memory_map_write: +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 |