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move saving SH2 SR into memory access and do so only if needed

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This commit is contained in:
kub 2019-03-27 21:58:32 +01:00
parent 9031406131
commit ff0eaa11d9
4 changed files with 84 additions and 27 deletions
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64
pico/32x/memory.c
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@ -40,7 +40,9 @@
*/
#include "../pico_int.h"
#include "../memory.h"
#include "../../cpu/sh2/compiler.h"
DRC_DECLARE_SR;
static const char str_mars[] = "MARS";
@ -1237,6 +1239,7 @@ static u32 sh2_read8_unmapped(u32 a, SH2 *sh2)
static u32 sh2_read8_cs0(u32 a, SH2 *sh2)
{
u32 d = 0;
DRC_SAVE_SR(sh2);
sh2_burn_cycles(sh2, 1*2);
@ -1252,18 +1255,19 @@ static u32 sh2_read8_cs0(u32 a, SH2 *sh2)
goto out_16to8;
}
// TODO: mirroring?
if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m))
return Pico32xMem->sh2_rom_m.b[a ^ 1];
if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s))
return Pico32xMem->sh2_rom_s.b[a ^ 1];
if ((a & 0x3fe00) == 0x4200) {
d = Pico32xMem->pal[(a & 0x1ff) / 2];
goto out_16to8;
}
return sh2_read8_unmapped(a, sh2);
// TODO: mirroring?
if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m))
d = Pico32xMem->sh2_rom_m.b[a ^ 1];
else if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s))
d = Pico32xMem->sh2_rom_s.b[a ^ 1];
else
d = sh2_read8_unmapped(a, sh2);
goto out;
out_16to8:
if (a & 1)
@ -1271,8 +1275,10 @@ out_16to8:
else
d >>= 8;
out:
elprintf_sh2(sh2, EL_32X, "r8 [%08x] %02x @%06x",
a, d, sh2_pc(sh2));
DRC_RESTORE_SR(sh2);
return d;
}
@ -1299,13 +1305,14 @@ static u32 sh2_read16_unmapped(u32 a, SH2 *sh2)
static u32 sh2_read16_cs0(u32 a, SH2 *sh2)
{
u32 d = 0;
DRC_SAVE_SR(sh2);
sh2_burn_cycles(sh2, 1*2);
if ((a & 0x3ffc0) == 0x4000) {
d = p32x_sh2reg_read16(a, sh2);
if (!(EL_LOGMASK & EL_PWM) && (a & 0x30) == 0x30) // hide PWM
return d;
goto out_noprint;
goto out;
}
@ -1315,21 +1322,23 @@ static u32 sh2_read16_cs0(u32 a, SH2 *sh2)
goto out;
}
if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m))
return Pico32xMem->sh2_rom_m.w[a / 2];
if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s))
return Pico32xMem->sh2_rom_s.w[a / 2];
if ((a & 0x3fe00) == 0x4200) {
d = Pico32xMem->pal[(a & 0x1ff) / 2];
goto out;
}
return sh2_read16_unmapped(a, sh2);
if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m))
d = Pico32xMem->sh2_rom_m.w[a / 2];
else if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s))
d = Pico32xMem->sh2_rom_s.w[a / 2];
else
d = sh2_read16_unmapped(a, sh2);
out:
elprintf_sh2(sh2, EL_32X, "r16 [%08x] %04x @%06x",
a, d, sh2_pc(sh2));
out_noprint:
DRC_RESTORE_SR(sh2);
return d;
}
@ -1383,6 +1392,7 @@ static void REGPARM(3) sh2_write8_unmapped(u32 a, u32 d, SH2 *sh2)
static void REGPARM(3) sh2_write8_cs0(u32 a, u32 d, SH2 *sh2)
{
DRC_SAVE_SR(sh2);
elprintf_sh2(sh2, EL_32X, "w8 [%08x] %02x @%06x",
a, d & 0xff, sh2_pc(sh2));
@ -1390,16 +1400,24 @@ static void REGPARM(3) sh2_write8_cs0(u32 a, u32 d, SH2 *sh2)
if ((a & 0x3fff0) == 0x4100) {
sh2->poll_addr = 0;
p32x_vdp_write8(a, d);
return;
goto out;
}
if ((a & 0x3fe00) == 0x4200) {
((u8 *)Pico32xMem->pal)[(a & 0x1ff) ^ 1] = d;
Pico32x.dirty_pal = 1;
goto out;
}
}
if ((a & 0x3ffc0) == 0x4000) {
p32x_sh2reg_write8(a, d, sh2);
return;
goto out;
}
sh2_write8_unmapped(a, d, sh2);
out:
DRC_RESTORE_SR(sh2);
}
static void REGPARM(3) sh2_write8_dram0(u32 a, u32 d, SH2 *sh2)
@ -1426,8 +1444,11 @@ static void REGPARM(3) sh2_write8_sdram(u32 a, u32 d, SH2 *sh2)
static void REGPARM(3) sh2_write8_sdram_wt(u32 a, u32 d, SH2 *sh2)
{
// xmen sync hack..
if (a < 0x26000200)
if (a < 0x26000200) {
DRC_SAVE_SR(sh2);
sh2_end_run(sh2, 32);
DRC_RESTORE_SR(sh2);
}
sh2_write8_sdram(a, d, sh2);
}
@ -1453,6 +1474,7 @@ static void REGPARM(3) sh2_write16_unmapped(u32 a, u32 d, SH2 *sh2)
static void REGPARM(3) sh2_write16_cs0(u32 a, u32 d, SH2 *sh2)
{
DRC_SAVE_SR(sh2);
if (((EL_LOGMASK & EL_PWM) || (a & 0x30) != 0x30)) // hide PWM
elprintf_sh2(sh2, EL_32X, "w16 [%08x] %04x @%06x",
a, d & 0xffff, sh2_pc(sh2));
@ -1461,22 +1483,24 @@ static void REGPARM(3) sh2_write16_cs0(u32 a, u32 d, SH2 *sh2)
if ((a & 0x3fff0) == 0x4100) {
sh2->poll_addr = 0;
p32x_vdp_write16(a, d, sh2);
return;
goto out;
}
if ((a & 0x3fe00) == 0x4200) {
Pico32xMem->pal[(a & 0x1ff) / 2] = d;
Pico32x.dirty_pal = 1;
return;
goto out;
}
}
if ((a & 0x3ffc0) == 0x4000) {
p32x_sh2reg_write16(a, d, sh2);
return;
goto out;
}
sh2_write16_unmapped(a, d, sh2);
out:
DRC_RESTORE_SR(sh2);
}
static void REGPARM(3) sh2_write16_dram0(u32 a, u32 d, SH2 *sh2)