mirror of
https://github.com/kevinbentley/Descent3.git
synced 2025-01-22 19:55:23 +00:00
6c8977caf0
The vast majority of this is fixing up `char *` that should be `const char *` but a handful of other fixes, like potential buffer overflows that GCC noticed, etc, were applied as well. This removes `-Wno-write-strings` from CMakeLists.txt, as it is no longer necessary, as there is no longer a flood of compiler warning spam when building. This does not fix all compiler warnings; there are still a handful, and they are legitimate, but they can be dealt with in a future commit.
204 lines
8.5 KiB
C
204 lines
8.5 KiB
C
/*
|
|
* Descent 3
|
|
* Copyright (C) 2024 Parallax Software
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
|
|
/* These are our global variables for passing values - AH */
|
|
/* For _asm_sndDecompM16 */
|
|
unsigned short *sndDecompM16_dst;
|
|
unsigned char *sndDecompM16_src;
|
|
unsigned int sndDecompM16_len;
|
|
unsigned int sndDecompM16_prev;
|
|
unsigned int sndDecompM16_return;
|
|
/* For _asm_sndDecompM16 */
|
|
unsigned short *sndDecompS16_dst;
|
|
unsigned char *sndDecompS16_src;
|
|
unsigned int sndDecompS16_len;
|
|
unsigned int sndDecompS16_prev;
|
|
unsigned int sndDecompS16_return;
|
|
/* For _asm_nfHPkDecomp */
|
|
unsigned char *nfHPkDecomp_ops;
|
|
unsigned char *nfHPkDecomp_comp;
|
|
unsigned int nfHPkDecomp_x;
|
|
unsigned int nfHPkDecomp_y;
|
|
unsigned int nfHPkDecomp_w;
|
|
unsigned int nfHPkDecomp_h;
|
|
|
|
#ifdef __cplusplus /* Avoid C++ name mangling - AH */
|
|
extern "C" {
|
|
#endif
|
|
void _asm_sndDecompM16(void);
|
|
void _asm_sndDecompS16(void);
|
|
void _asm_nfPkConfig(void);
|
|
void _asm_nfHPkDecomp(void);
|
|
void _asm_selfModify(void);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#define MAX_MEM_UNLOCK_POINTS 20
|
|
int global_unlock_memory_pointers[MAX_MEM_UNLOCK_POINTS]; // _asm_selfModify() sets these
|
|
|
|
int allow_self_modification(void) {
|
|
int i;
|
|
unsigned int page_start;
|
|
|
|
for (i = 0; i < MAX_MEM_UNLOCK_POINTS; i++)
|
|
global_unlock_memory_pointers[i] = 0;
|
|
|
|
_asm_selfModify();
|
|
|
|
for (i = 0; i < MAX_MEM_UNLOCK_POINTS; i++)
|
|
if (global_unlock_memory_pointers[i] != 0) {
|
|
page_start = global_unlock_memory_pointers[i] - (global_unlock_memory_pointers[i] % getpagesize());
|
|
mprotect((void *)page_start, getpagesize() * 2, PROT_READ | PROT_WRITE | PROT_EXEC);
|
|
// fprintf(stderr, "Unlocked memory location %x for location %x.\n",page_start, global_unlock_memory_pointers[i]);
|
|
}
|
|
return (1);
|
|
}
|
|
unsigned sndDecompM16(unsigned short *dst, const unsigned char *src, unsigned len, unsigned prev) {
|
|
sndDecompM16_dst = dst;
|
|
sndDecompM16_src = src;
|
|
sndDecompM16_len = len;
|
|
sndDecompM16_prev = prev;
|
|
__asm__(" call _asm_sndDecompM16" : : : "%esi", "%edi", "%ebx", "cc", "memory");
|
|
return (sndDecompM16_return);
|
|
}
|
|
|
|
unsigned sndDecompS16(unsigned short *dst, const unsigned char *src, unsigned len, unsigned prev) {
|
|
sndDecompS16_dst = dst;
|
|
sndDecompS16_src = src;
|
|
sndDecompS16_len = len;
|
|
sndDecompS16_prev = prev;
|
|
__asm__("call _asm_sndDecompS16" : : : "%esi", "%edi", "%ebx", "cc", "memory");
|
|
return (sndDecompS16_return);
|
|
}
|
|
|
|
void nfPkConfig(void) {
|
|
__asm__("call _asm_nfPkConfig" : : : "%esi", "%edi", "%ebx", "cc", "memory");
|
|
return;
|
|
}
|
|
|
|
void nfHPkDecomp(unsigned char *ops, unsigned char *comp, unsigned int x, unsigned int y, unsigned int w,
|
|
unsigned int h) {
|
|
nfHPkDecomp_ops = ops;
|
|
nfHPkDecomp_comp = comp;
|
|
nfHPkDecomp_x = x;
|
|
nfHPkDecomp_y = y;
|
|
nfHPkDecomp_w = w;
|
|
nfHPkDecomp_h = h;
|
|
__asm__("call _asm_nfHPkDecomp" : : : "%esi", "%edi", "%ebx", "cc", "memory");
|
|
return;
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* Non-Implemented functions (from inside mveasm.cpp - AH) */
|
|
/***********************************************************/
|
|
|
|
void nfHiColorDecomp(unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h);
|
|
void nfHiColorDecompChg(unsigned short *chgs, unsigned short *parms, unsigned char *comp, unsigned x, unsigned y,
|
|
unsigned w, unsigned h);
|
|
void nfDecomp(unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h);
|
|
void nfDecompChg(unsigned short *chgs, unsigned short *parms, unsigned char *comp, unsigned x, unsigned y, unsigned w,
|
|
unsigned h);
|
|
void nfPkPal(void);
|
|
void nfPkDecomp(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h);
|
|
void nfPkDecompH(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h);
|
|
void nfPkDecompD(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h);
|
|
void mve_ShowFrameField(unsigned char *buf, unsigned bufw, unsigned bufh, unsigned sx, unsigned sy, unsigned w,
|
|
unsigned h, unsigned dstx, unsigned dsty, unsigned field);
|
|
void mve_ShowFrameFieldHi(unsigned char *buf, unsigned bufw, unsigned bufh, unsigned sx, unsigned sy, unsigned w,
|
|
unsigned h, unsigned dstx, unsigned dsty, unsigned field);
|
|
void mve_sfShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned short *chgs,
|
|
unsigned dstx, unsigned dsty);
|
|
void mve_sfHiColorShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned short *chgs,
|
|
unsigned dstx, unsigned dsty);
|
|
void mve_sfPkShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned char *ops,
|
|
unsigned dstx, unsigned dsty);
|
|
void mve_sfPkHiColorShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned char *ops,
|
|
unsigned dstx, unsigned dsty);
|
|
|
|
void MVE_SetPalette(unsigned char *p, unsigned start, unsigned count);
|
|
void palLoadCompPalette(unsigned char *buf);
|
|
void gfxMode(unsigned mode);
|
|
void gfxLoadCrtc(unsigned char *crtc, unsigned char chain4, unsigned char res);
|
|
void gfxGetCrtc(unsigned char *crtc);
|
|
void gfxVres(unsigned char misc, unsigned char *crtc);
|
|
void MVE_gfxWaitRetrace(int state);
|
|
void MVE_gfxSetSplit(unsigned line);
|
|
|
|
// rcg07272000
|
|
// need this on non-Intel platforms. Intel uses int $3.
|
|
#if (defined __i386__)
|
|
#define int3 __asm__ __volatile__("int $3");
|
|
#else
|
|
#define int3 raise(SIGTRAP);
|
|
#endif
|
|
|
|
void nfHiColorDecomp(unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h) { int3 }
|
|
void nfHiColorDecompChg(unsigned short *chgs, unsigned short *parms, unsigned char *comp, unsigned x, unsigned y,
|
|
unsigned w, unsigned h) {
|
|
int3
|
|
}
|
|
void nfDecomp(unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h) { int3 }
|
|
void nfDecompChg(unsigned short *chgs, unsigned short *parms, unsigned char *comp, unsigned x, unsigned y, unsigned w,
|
|
unsigned h) {
|
|
int3
|
|
}
|
|
void nfPkPal(void) { int3 }
|
|
void nfPkDecomp(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h) { int3 }
|
|
void nfPkDecompH(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h) { int3 }
|
|
void nfPkDecompD(unsigned char *ops, unsigned char *comp, unsigned x, unsigned y, unsigned w, unsigned h) { int3 }
|
|
void mve_ShowFrameField(unsigned char *buf, unsigned bufw, unsigned bufh, unsigned sx, unsigned sy, unsigned w,
|
|
unsigned h, unsigned dstx, unsigned dsty, unsigned field) {
|
|
int3
|
|
}
|
|
void mve_ShowFrameFieldHi(unsigned char *buf, unsigned bufw, unsigned bufh, unsigned sx, unsigned sy, unsigned w,
|
|
unsigned h, unsigned dstx, unsigned dsty, unsigned field) {
|
|
int3
|
|
}
|
|
void mve_sfShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned short *chgs,
|
|
unsigned dstx, unsigned dsty) {
|
|
int3
|
|
}
|
|
void mve_sfHiColorShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned short *chgs,
|
|
unsigned dstx, unsigned dsty) {
|
|
int3
|
|
}
|
|
void mve_sfPkShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned char *ops,
|
|
unsigned dstx, unsigned dsty) {
|
|
int3
|
|
}
|
|
void mve_sfPkHiColorShowFrameChg(bool prvbuf, unsigned x, unsigned y, unsigned w, unsigned h, unsigned char *ops,
|
|
unsigned dstx, unsigned dsty) {
|
|
int3
|
|
}
|
|
/* Avoid name mangling issues by moving this into mvelibl.cpp - AH
|
|
void MVE_SetPalette(unsigned char *p, unsigned start, unsigned count)
|
|
{
|
|
int3
|
|
} */
|
|
void palLoadCompPalette(unsigned char *buf) { int3 }
|
|
void gfxMode(unsigned mode) { int3 }
|
|
void gfxLoadCrtc(unsigned char *crtc, unsigned char chain4, unsigned char res) { int3 }
|
|
void gfxGetCrtc(unsigned char *crtc) { int3 }
|
|
void gfxVres(unsigned char misc, unsigned char *crtc) { int3 }
|
|
void MVE_gfxWaitRetrace(int state) { int3 }
|
|
void MVE_gfxSetSplit(unsigned line) { int3 }
|