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add big endian platform support

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This commit is contained in:
kub 2021-02-22 22:25:03 +01:00
parent b053cb2044
commit 57c5a5e505
21 changed files with 224 additions and 178 deletions
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28
pico/cd/memory.c
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@ -560,13 +560,13 @@ write_comm:
static u32 PicoReadM68k8_cell0(u32 a)
{
a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged
return Pico_mcd->word_ram1M[0][a ^ 1];
return Pico_mcd->word_ram1M[0][MEM_BE2(a)];
}
static u32 PicoReadM68k8_cell1(u32 a)
{
a = (a&3) | (cell_map(a >> 2) << 2);
return Pico_mcd->word_ram1M[1][a ^ 1];
return Pico_mcd->word_ram1M[1][MEM_BE2(a)];
}
static u32 PicoReadM68k16_cell0(u32 a)
@ -584,13 +584,13 @@ static u32 PicoReadM68k16_cell1(u32 a)
static void PicoWriteM68k8_cell0(u32 a, u32 d)
{
a = (a&3) | (cell_map(a >> 2) << 2);
Pico_mcd->word_ram1M[0][a ^ 1] = d;
Pico_mcd->word_ram1M[0][MEM_BE2(a)] = d;
}
static void PicoWriteM68k8_cell1(u32 a, u32 d)
{
a = (a&3) | (cell_map(a >> 2) << 2);
Pico_mcd->word_ram1M[1][a ^ 1] = d;
Pico_mcd->word_ram1M[1][MEM_BE2(a)] = d;
}
static void PicoWriteM68k16_cell0(u32 a, u32 d)
@ -754,7 +754,7 @@ static void s68k_unmapped_write16(u32 a, u32 d)
static void PicoWriteS68k8_prgwp(u32 a, u32 d)
{
if (a >= (Pico_mcd->s68k_regs[2] << 9))
Pico_mcd->prg_ram[a ^ 1] = d;
Pico_mcd->prg_ram[MEM_BE2(a)] = d;
}
static void PicoWriteS68k16_prgwp(u32 a, u32 d)
@ -768,7 +768,7 @@ static void PicoWriteS68k16_prgwp(u32 a, u32 d)
// decode (080000 - 0bffff, in 1M mode)
static u32 PicoReadS68k8_dec0(u32 a)
{
u32 d = Pico_mcd->word_ram1M[0][((a >> 1) ^ 1) & 0x1ffff];
u32 d = Pico_mcd->word_ram1M[0][MEM_BE2(a >> 1) & 0x1ffff];
if (a & 1)
d &= 0x0f;
else
@ -778,7 +778,7 @@ static u32 PicoReadS68k8_dec0(u32 a)
static u32 PicoReadS68k8_dec1(u32 a)
{
u32 d = Pico_mcd->word_ram1M[1][((a >> 1) ^ 1) & 0x1ffff];
u32 d = Pico_mcd->word_ram1M[1][MEM_BE2(a >> 1) & 0x1ffff];
if (a & 1)
d &= 0x0f;
else
@ -788,7 +788,7 @@ static u32 PicoReadS68k8_dec1(u32 a)
static u32 PicoReadS68k16_dec0(u32 a)
{
u32 d = Pico_mcd->word_ram1M[0][((a >> 1) ^ 1) & 0x1ffff];
u32 d = Pico_mcd->word_ram1M[0][MEM_BE2(a >> 1) & 0x1ffff];
d |= d << 4;
d &= ~0xf0;
return d;
@ -796,7 +796,7 @@ static u32 PicoReadS68k16_dec0(u32 a)
static u32 PicoReadS68k16_dec1(u32 a)
{
u32 d = Pico_mcd->word_ram1M[1][((a >> 1) ^ 1) & 0x1ffff];
u32 d = Pico_mcd->word_ram1M[1][MEM_BE2(a >> 1) & 0x1ffff];
d |= d << 4;
d &= ~0xf0;
return d;
@ -806,7 +806,7 @@ static u32 PicoReadS68k16_dec1(u32 a)
#define mk_decode_w8(bank) \
static void PicoWriteS68k8_dec_m0b##bank(u32 a, u32 d) \
{ \
u8 *pd = &Pico_mcd->word_ram1M[bank][((a >> 1) ^ 1) & 0x1ffff]; \
u8 *pd = &Pico_mcd->word_ram1M[bank][MEM_BE2(a >> 1) & 0x1ffff];\
\
if (!(a & 1)) \
*pd = (*pd & 0x0f) | (d << 4); \
@ -816,7 +816,7 @@ static void PicoWriteS68k8_dec_m0b##bank(u32 a, u32 d) \
\
static void PicoWriteS68k8_dec_m1b##bank(u32 a, u32 d) \
{ \
u8 *pd = &Pico_mcd->word_ram1M[bank][((a >> 1) ^ 1) & 0x1ffff]; \
u8 *pd = &Pico_mcd->word_ram1M[bank][MEM_BE2(a >> 1) & 0x1ffff];\
u8 mask = (a & 1) ? 0x0f : 0xf0; \
\
if (!(*pd & mask) && (d & 0x0f)) /* underwrite */ \
@ -835,7 +835,7 @@ mk_decode_w8(1)
#define mk_decode_w16(bank) \
static void PicoWriteS68k16_dec_m0b##bank(u32 a, u32 d) \
{ \
u8 *pd = &Pico_mcd->word_ram1M[bank][((a >> 1) ^ 1) & 0x1ffff]; \
u8 *pd = &Pico_mcd->word_ram1M[bank][MEM_BE2(a >> 1) & 0x1ffff];\
\
d &= 0x0f0f; \
*pd = d | (d >> 4); \
@ -843,7 +843,7 @@ static void PicoWriteS68k16_dec_m0b##bank(u32 a, u32 d) \
\
static void PicoWriteS68k16_dec_m1b##bank(u32 a, u32 d) \
{ \
u8 *pd = &Pico_mcd->word_ram1M[bank][((a >> 1) ^ 1) & 0x1ffff]; \
u8 *pd = &Pico_mcd->word_ram1M[bank][MEM_BE2(a >> 1) & 0x1ffff];\
\
d &= 0x0f0f; /* underwrite */ \
if (!(*pd & 0xf0)) *pd |= d >> 4; \
@ -852,7 +852,7 @@ static void PicoWriteS68k16_dec_m1b##bank(u32 a, u32 d) \
\
static void PicoWriteS68k16_dec_m2b##bank(u32 a, u32 d) \
{ \
u8 *pd = &Pico_mcd->word_ram1M[bank][((a >> 1) ^ 1) & 0x1ffff]; \
u8 *pd = &Pico_mcd->word_ram1M[bank][MEM_BE2(a >> 1) & 0x1ffff];\
\
d &= 0x0f0f; /* overwrite */ \
d |= d >> 4; \