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Add fast-path for memset, memcpy, and memmove #33

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Add fast-path for memset, memcpy, and memmove #33

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6 changes: 6 additions & 0 deletions libc/string/memcpy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,8 +15,14 @@

libc_hidden_proto(Wmemcpy)

char __klee_handle_memcpy(void *, const void *, size_t);

Wvoid *Wmemcpy(Wvoid * __restrict s1, const Wvoid * __restrict s2, size_t n)
{

if (__klee_handle_memcpy(s1, s2, n))
return s1;

register Wchar *r1 = s1;
register const Wchar *r2 = s2;

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5 changes: 5 additions & 0 deletions libc/string/memmove.c
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Expand Up @@ -14,8 +14,13 @@ libc_hidden_proto(memmove)
# define Wmemmove memmove
#endif

char __klee_handle_memmove(void *, const void *, size_t);

Wvoid *Wmemmove(Wvoid *s1, const Wvoid *s2, size_t n)
{
if(__klee_handle_memmove(s1, s2, n))
return s1;

#ifdef __BCC__
register Wchar *s = (Wchar *) s1;
register const Wchar *p = (const Wchar *) s2;
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5 changes: 5 additions & 0 deletions libc/string/memset.c
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Expand Up @@ -14,8 +14,13 @@ libc_hidden_proto(memset)
# define Wmemset memset
#endif

char __klee_handle_memset(void *, int, size_t);

Wvoid *Wmemset(Wvoid *s, Wint c, size_t n)
{
if (__klee_handle_memset(s, c, n))
return s;

register Wuchar *p = (Wuchar *) s;
#ifdef __BCC__
/* bcc can optimize the counter if it thinks it is a pointer... */
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