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Merge branch 'fix-misaligned-access' into 'next'

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Do not access memory on misaligned addresses

See merge request STJr/SRB2!2438
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sphere 2024-06-07 13:26:42 +00:00
commit b68a0fda8f
1 changed files with 0 additions and 29 deletions
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29
src/byteptr.h
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@ -11,9 +11,6 @@
/// \brief Macros to read/write from/to a UINT8 *,
/// used for packet creation and such
#if defined (__alpha__) || defined (__arm__) || defined (__mips__) || defined (__ia64__) || defined (__clang__)
#define DEALIGNED
#endif
#include "endian.h"
@ -21,7 +18,6 @@
//
// Little-endian machines
//
#ifdef DEALIGNED
#define WRITEUINT8(p,b) do { UINT8 *p_tmp = (void *)p; const UINT8 tv = ( UINT8)(b); memcpy(p, &tv, sizeof( UINT8)); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITESINT8(p,b) do { SINT8 *p_tmp = (void *)p; const SINT8 tv = ( UINT8)(b); memcpy(p, &tv, sizeof( UINT8)); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEINT16(p,b) do { INT16 *p_tmp = (void *)p; const INT16 tv = ( INT16)(b); memcpy(p, &tv, sizeof( INT16)); p_tmp++; p = (void *)p_tmp; } while (0)
@ -31,20 +27,8 @@
#define WRITECHAR(p,b) do { char *p_tmp = (void *)p; const char tv = ( char)(b); memcpy(p, &tv, sizeof( char)); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEFIXED(p,b) do { fixed_t *p_tmp = (void *)p; const fixed_t tv = (fixed_t)(b); memcpy(p, &tv, sizeof(fixed_t)); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEANGLE(p,b) do { angle_t *p_tmp = (void *)p; const angle_t tv = (angle_t)(b); memcpy(p, &tv, sizeof(angle_t)); p_tmp++; p = (void *)p_tmp; } while (0)
#else
#define WRITEUINT8(p,b) do { UINT8 *p_tmp = ( UINT8 *)p; *p_tmp = ( UINT8)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITESINT8(p,b) do { SINT8 *p_tmp = ( SINT8 *)p; *p_tmp = ( SINT8)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEINT16(p,b) do { INT16 *p_tmp = ( INT16 *)p; *p_tmp = ( INT16)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEUINT16(p,b) do { UINT16 *p_tmp = ( UINT16 *)p; *p_tmp = ( UINT16)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEINT32(p,b) do { INT32 *p_tmp = ( INT32 *)p; *p_tmp = ( INT32)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEUINT32(p,b) do { UINT32 *p_tmp = ( UINT32 *)p; *p_tmp = ( UINT32)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITECHAR(p,b) do { char *p_tmp = ( char *)p; *p_tmp = ( char)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEFIXED(p,b) do { fixed_t *p_tmp = (fixed_t *)p; *p_tmp = (fixed_t)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#define WRITEANGLE(p,b) do { angle_t *p_tmp = (angle_t *)p; *p_tmp = (angle_t)(b); p_tmp++; p = (void *)p_tmp; } while (0)
#endif
#ifdef __GNUC__
#ifdef DEALIGNED
#define READUINT8(p) ({ UINT8 *p_tmp = (void *)p; UINT8 b; memcpy(&b, p, sizeof( UINT8)); p_tmp++; p = (void *)p_tmp; b; })
#define READSINT8(p) ({ SINT8 *p_tmp = (void *)p; SINT8 b; memcpy(&b, p, sizeof( SINT8)); p_tmp++; p = (void *)p_tmp; b; })
#define READINT16(p) ({ INT16 *p_tmp = (void *)p; INT16 b; memcpy(&b, p, sizeof( INT16)); p_tmp++; p = (void *)p_tmp; b; })
@ -55,17 +39,6 @@
#define READFIXED(p) ({ fixed_t *p_tmp = (void *)p; fixed_t b; memcpy(&b, p, sizeof(fixed_t)); p_tmp++; p = (void *)p_tmp; b; })
#define READANGLE(p) ({ angle_t *p_tmp = (void *)p; angle_t b; memcpy(&b, p, sizeof(angle_t)); p_tmp++; p = (void *)p_tmp; b; })
#else
#define READUINT8(p) ({ UINT8 *p_tmp = ( UINT8 *)p; UINT8 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READSINT8(p) ({ SINT8 *p_tmp = ( SINT8 *)p; SINT8 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READINT16(p) ({ INT16 *p_tmp = ( INT16 *)p; INT16 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READUINT16(p) ({ UINT16 *p_tmp = ( UINT16 *)p; UINT16 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READINT32(p) ({ INT32 *p_tmp = ( INT32 *)p; INT32 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READUINT32(p) ({ UINT32 *p_tmp = ( UINT32 *)p; UINT32 b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READCHAR(p) ({ char *p_tmp = ( char *)p; char b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READFIXED(p) ({ fixed_t *p_tmp = (fixed_t *)p; fixed_t b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#define READANGLE(p) ({ angle_t *p_tmp = (angle_t *)p; angle_t b = *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
#endif
#else
#define READUINT8(p) *(( UINT8 *)p)++
#define READSINT8(p) *(( SINT8 *)p)++
#define READINT16(p) *(( INT16 *)p)++
@ -148,8 +121,6 @@ FUNCINLINE static ATTRINLINE UINT32 readulong(void *ptr)
#define READANGLE(p) ({ angle_t *p_tmp = (angle_t *)p; angle_t b = readulong(p); p_tmp++; p = (void *)p_tmp; b; })
#endif //SRB2_BIG_ENDIAN
#undef DEALIGNED
#define WRITESTRINGN(p, s, n) { \
size_t tmp_i; \
\