From 9ece32be0b943bfc3cb0bf23dc08730431c01ec7 Mon Sep 17 00:00:00 2001 From: notaz Date: Mon, 9 Oct 2023 21:10:37 +0300 Subject: [PATCH] psxbios: don't limit pointers to ram scratchpad is sometimes used --- libpcsxcore/psxbios.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c index 432b0e2c..11011d3d 100644 --- a/libpcsxcore/psxbios.c +++ b/libpcsxcore/psxbios.c @@ -1479,13 +1479,15 @@ void psxBios_printf() { // 0x3f } static void psxBios_cd() { // 0x40 - const char *p, *dir = castRam8ptr(a0); + const char *p, *dir = Ra0; PSXBIOS_LOG("psxBios_%s %x(%s)\n", biosB0n[0x40], a0, dir); - if ((p = strchr(dir, ':'))) - dir = ++p; - if (*dir == '\\') - dir++; - snprintf(cdir, sizeof(cdir), "%s", dir); + if (dir != INVALID_PTR) { + if ((p = strchr(dir, ':'))) + dir = ++p; + if (*dir == '\\') + dir++; + snprintf(cdir, sizeof(cdir), "%s", dir); + } mips_return_c(1, 100); } @@ -2566,7 +2568,7 @@ void psxBios_puts() { // 3e/3f } static void bufile(const u8 *mcd_data, u32 dir_) { - struct DIRENTRY *dir = (struct DIRENTRY *)castRam8ptr(dir_); + struct DIRENTRY *dir = (struct DIRENTRY *)PSXM(dir_); const char *pfile = ffile + 5; const u8 *data = mcd_data; int i = 0, match = 0; @@ -2574,6 +2576,9 @@ static void bufile(const u8 *mcd_data, u32 dir_) { u32 head = 0; v0 = 0; + if (dir == INVALID_PTR) + return; + for (; nfile <= 15 && !match; nfile++) { const char *name; @@ -2627,11 +2632,12 @@ static void bufile(const u8 *mcd_data, u32 dir_) { */ static void psxBios_firstfile() { // 42 - char *pa0 = castRam8ptr(a0); + char *pa0 = Ra0; PSXBIOS_LOG("psxBios_%s %s %x\n", biosB0n[0x42], pa0, a1); v0 = 0; + if (pa0 != INVALID_PTR) { snprintf(ffile, sizeof(ffile), "%s", pa0); if (ffile[5] == 0) -- 2.39.5