RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 15:27:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

32x DMA memory copy performance optimisation

Browse source
This commit is contained in:
kub 2019-05-28 23:16:45 +02:00
parent 8141d75694
commit 346153e08e
5 changed files with 105 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

9
cpu/sh2/compiler.c
View file

@ -2261,7 +2261,7 @@ static int emit_get_rom_data(SH2 *sh2, sh2_reg_e r, u32 offs, int size, u32 *val
if (gconst_get(r, &a)) {
a += offs;
// check if rom is memory mapped (not bank switched), and address is in rom
if (dr_is_rom(a) && p32x_sh2_get_mem_ptr(a, &mask, sh2)) {
if (dr_is_rom(a) && p32x_sh2_get_mem_ptr(a, &mask, sh2) != (void *)-1) {
switch (size & MF_SIZEMASK) {
case 0: *val = (s8)p32x_sh2_read8(a, sh2s); break; // 8
case 1: *val = (s16)p32x_sh2_read16(a, sh2s); break; // 16
@ -4896,12 +4896,7 @@ void sh2_drc_flush_all(void)
void sh2_drc_mem_setup(SH2 *sh2)
{
// fill the convenience pointers
sh2->p_bios = sh2->is_slave ? Pico32xMem->sh2_rom_s.w : Pico32xMem->sh2_rom_m.w;
sh2->p_da = sh2->data_array;
sh2->p_sdram = Pico32xMem->sdram;
sh2->p_rom = Pico.rom;
// sh2->p_dram filled in dram bank switching
// fill the DRC-only convenience pointers
sh2->p_drcblk_da = Pico32xMem->drcblk_da[!!sh2->is_slave];
sh2->p_drcblk_ram = Pico32xMem->drcblk_ram;
}