ed/pikuma_ps1
1
0
Fork 0
mirror of https://github.com/Ed94/pikuma_ps1.git synced 2026-08-25 02:20:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

don't bother wiht icache flush atom.

Browse Source
This commit is contained in:
ed
2026-08-18 16:10:44 -04:00
parent bbda5efaea
commit b345ccd60e
2 changed files with 14 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
code/duffle/mips.atom.c
+12 -5
View File
@@ -55,9 +55,15 @@ FI_ Slice_MipsCode ac_shift_aright_var_v3s4_self(AtomBuilder_R ab, Reg_(V3_S4) d
* 3. $t0 = bios_table_addr ; t0 = &BIOS A-function table * 3. $t0 = bios_table_addr ; t0 = &BIOS A-function table
* 4. jalr $t0, $ra ; call BIOS(flushcache) * 4. jalr $t0, $ra ; call BIOS(flushcache)
* nop ; branch delay slot * nop ; branch delay slot
* 5. lw $ra, 4($sp); jr $ra ; restore & return * 5. lw $ra, 4($sp)
* 6. sp += 8 * 6. sp += 8 ; load-delay
* 7. jr $ra
* nop ; BD
*/ */
#if 0
// Note: Can't do this without having a way to do C-Runtime frame call from Tape ABI.
// Don't support this without adjusting scratchpad to save tape frame in some way.
internal MipsAtom_(mips_flush_icache) { internal MipsAtom_(mips_flush_icache) {
add_ui(R_SP, R_SP, -MipsStackAlignment), // sp -= 8 add_ui(R_SP, R_SP, -MipsStackAlignment), // sp -= 8
store_word(R_RA, R_SP, S_(U4)), // sw $ra, 4($sp) store_word(R_RA, R_SP, S_(U4)), // sw $ra, 4($sp)
@@ -65,9 +71,10 @@ internal MipsAtom_(mips_flush_icache) {
add_ui(R_T0, R_0, bios_table_addr), // addiu $t0, $0, 0xA0 add_ui(R_T0, R_0, bios_table_addr), // addiu $t0, $0, 0xA0
jump_link(R_T0, R_RA), nop, // jalr $t0, $ra, BD slot jump_link(R_T0, R_RA), nop, // jalr $t0, $ra, BD slot
load_word(R_RA, R_SP, S_(U4)), // lw $ra, 4($sp) load_word(R_RA, R_SP, S_(U4)), // lw $ra, 4($sp)
jump_reg(R_RA), // jr $ra add_ui(R_SP, R_SP, MipsStackAlignment), // sp += 8 (load-delay)
add_ui(R_SP, R_SP, MipsStackAlignment), // sp += 8 (BD) jump_reg(R_RA), nop, // jr $ra, BD slot
mac_yield(), // mac_yield(),
}; };
#endif
#pragma endregion Baked Atoms #pragma endregion Baked Atoms
code/duffle/mips.h
+2 -1
View File
@@ -586,6 +586,7 @@ enum { _BitOffsets = 0
, jump_link(rtmp_0, rret_addr) \ , jump_link(rtmp_0, rret_addr) \
, nop \ , nop \
, load_word(rret_addr, rstack_ptr, 4) \ , load_word(rret_addr, rstack_ptr, 4) \
, jump_reg(rret_addr) \
, add_ui(rstack_ptr, rstack_ptr, MipsStackAlignment) \ , add_ui(rstack_ptr, rstack_ptr, MipsStackAlignment) \
, jump_reg(rret_addr) \
, nop \
) asm_clobber: clbr_volatile_gprs ) ) asm_clobber: clbr_volatile_gprs )