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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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11
pico/32x/32x.c
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@ -123,7 +123,6 @@ void Pico32xStartup(void)
emu_32x_startup();
}
#define HWSWAP(x) (((x) << 16) | ((x) >> 16))
void p32x_reset_sh2s(void)
{
elprintf(EL_32X, "sh2 reset");
@ -143,9 +142,9 @@ void p32x_reset_sh2s(void)
unsigned int vbr;
// initial data
idl_src = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
idl_dst = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
idl_size= HWSWAP(*(unsigned int *)(Pico.rom + 0x3dc));
idl_src = CPU_BE2(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
idl_dst = CPU_BE2(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
idl_size= CPU_BE2(*(unsigned int *)(Pico.rom + 0x3dc));
if (idl_size > Pico.romsize || idl_src + idl_size > Pico.romsize ||
idl_size > 0x40000 || idl_dst + idl_size > 0x40000 || (idl_src & 3) || (idl_dst & 3)) {
elprintf(EL_STATUS|EL_ANOMALY, "32x: invalid initial data ptrs: %06x -> %06x, %06x",
@ -155,7 +154,7 @@ void p32x_reset_sh2s(void)
memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
// VBR
vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3e8));
vbr = CPU_BE2(*(unsigned int *)(Pico.rom + 0x3e8));
sh2_set_vbr(0, vbr);
// checksum and M_OK
@ -169,7 +168,7 @@ void p32x_reset_sh2s(void)
unsigned int vbr;
// GBR/VBR
vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3ec));
vbr = CPU_BE2(*(unsigned int *)(Pico.rom + 0x3ec));
sh2_set_gbr(1, 0x20004000);
sh2_set_vbr(1, vbr);
// program will set S_OK