Added SDL_revcpy, which isn't _actually_ in SDL2.

libsdl-org · Feb 21, 2019 · 4c5e3b2 · 4c5e3b2 · kkofler · May 18, 2021
1 parent bb8b62e
commit 4c5e3b2
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
@@ -834,6 +834,17 @@ SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...)
     return retval;
 }
 
+DECLSPEC void * SDLCALL
+SDL_revcpy(void *dst, const void *src, size_t len)
+{
+    /* this doesn't reverse the data...I think this was just a memcpy that
+       was meant to be CPU-cache friendly if you knew you were working with
+       data going backwards in memory, instead of jumping over pages to copy
+       from the start...? Whatever, just do a memcpy here. */
+    return SDL_memcpy(dst, src, len);
+}
+
+
 DECLSPEC SDL_bool SDLCALL
 SDL_HasMMXExt(void)
 {

diff --git a/src/SDL20_syms.h b/src/SDL20_syms.h
@@ -220,7 +220,6 @@ SDL20_SYM_PASSTHROUGH(char *,getenv,(const char *a),(a),return)
 SDL20_SYM_PASSTHROUGH(void,qsort,(void *a, size_t b, size_t c, int (*d)(const void *, const void *)),(a,b,c,d),)
 SDL20_SYM_PASSTHROUGH(void *,memset,(void *a, int b, size_t c),(a,b,c),return)
 SDL20_SYM_PASSTHROUGH(void *,memcpy,(void *a, const void *b, size_t c),(a,b,c),return)
-SDL20_SYM_PASSTHROUGH(void *,revcpy,(void *a, const void *b, size_t c),(a,b,c),return)
 SDL20_SYM_PASSTHROUGH(int,memcmp,(const void *a, const void *b, size_t c),(a,b,c),return)
 SDL20_SYM_PASSTHROUGH(size_t,strlen,(const char *a),(a),return)
 SDL20_SYM_PASSTHROUGH(size_t,strlcpy,(char *a, const char *b, size_t c),(a,b,c),return)