funkey/picodrive-irixxxx
1
0
Fork 0
mirror of https://github.com/FunKey-Project/picodrive-irixxxx.git synced 2026-05-05 04:13:36 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

sh2 drc, make B/W read functions signed (reduces generated code size)

Browse Source
This commit is contained in:
kub
2019-04-26 18:53:21 +02:00
parent ed7e915078
commit aa4c4cb951
7 changed files with 85 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
pico/32x/memory.c
View File

@@ -1279,19 +1279,19 @@ out:
elprintf_sh2(sh2, EL_32X, "r8 [%08x] %02x @%06x",
a, d, sh2_pc(sh2));
DRC_RESTORE_SR(sh2);
return d;
return (s8)d;
}
static u32 REGPARM(2) sh2_read8_da(u32 a, SH2 *sh2)
{
return sh2->data_array[(a & 0xfff) ^ 1];
return (s8)sh2->data_array[(a & 0xfff) ^ 1];
}
// for ssf2
static u32 REGPARM(2) sh2_read8_rom(u32 a, SH2 *sh2)
{
u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19;
u8 *p = sh2->p_rom;
s8 *p = sh2->p_rom;
return p[(bank + (a & 0x7ffff)) ^ 1];
}
@@ -1340,18 +1340,18 @@ out:
a, d, sh2_pc(sh2));
out_noprint:
DRC_RESTORE_SR(sh2);
return d;
return (s16)d;
}
static u32 REGPARM(2) sh2_read16_da(u32 a, SH2 *sh2)
{
return ((u16 *)sh2->data_array)[(a & 0xffe) / 2];
return ((s16 *)sh2->data_array)[(a & 0xffe) / 2];
}
static u32 REGPARM(2) sh2_read16_rom(u32 a, SH2 *sh2)
{
u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19;
u16 *p = sh2->p_rom;
s16 *p = sh2->p_rom;
return p[(bank + (a & 0x7fffe)) / 2];
}
@@ -1364,7 +1364,8 @@ static u32 REGPARM(2) sh2_read32_unmapped(u32 a, SH2 *sh2)
static u32 REGPARM(2) sh2_read32_cs0(u32 a, SH2 *sh2)
{
return (sh2_read16_cs0(a, sh2) << 16) | sh2_read16_cs0(a + 2, sh2);
u32 d1 = sh2_read16_cs0(a, sh2) << 16, d2 = sh2_read16_cs0(a + 2, sh2) << 16;
return d1 | (d2 >> 16);
}
static u32 REGPARM(2) sh2_read32_da(u32 a, SH2 *sh2)
@@ -1631,7 +1632,7 @@ u32 REGPARM(2) p32x_sh2_read8(u32 a, SH2 *sh2)
if (map_flag_set(p))
return ((sh2_read_handler *)(p << 1))(a, sh2);
else
return *(u8 *)((p << 1) + ((a & sh2_map->mask) ^ 1));
return *(s8 *)((p << 1) + ((a & sh2_map->mask) ^ 1));
}
u32 REGPARM(2) p32x_sh2_read16(u32 a, SH2 *sh2)
@@ -1644,7 +1645,7 @@ u32 REGPARM(2) p32x_sh2_read16(u32 a, SH2 *sh2)
if (map_flag_set(p))
return ((sh2_read_handler *)(p << 1))(a, sh2);
else
return *(u16 *)((p << 1) + (a & sh2_map->mask));
return *(s16 *)((p << 1) + (a & sh2_map->mask));
}
u32 REGPARM(2) p32x_sh2_read32(u32 a, SH2 *sh2)