diff options
Diffstat (limited to 'sysdeps/powerpc/stpcpy.S')
| -rw-r--r-- | sysdeps/powerpc/stpcpy.S | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/sysdeps/powerpc/stpcpy.S b/sysdeps/powerpc/stpcpy.S index 2dcae0738d..9a4ab0b432 100644 --- a/sysdeps/powerpc/stpcpy.S +++ b/sysdeps/powerpc/stpcpy.S @@ -18,22 +18,36 @@ Boston, MA 02111-1307, USA. */ #include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> /* See strlen.s for comments on how the end-of-string testing works. */ /* char * [r3] stpcpy (char *dest [r3], const char *src [r4]) */ -EALIGN (__stpcpy, 4, 0) +EALIGN (BP_SYM (__stpcpy), 4, 0) #define rTMP r0 -#define rDEST r3 /* pointer to previous word in dest */ -#define rSRC r4 /* pointer to previous word in src */ +#define rRTN r3 +#if __BOUNDED_POINTERS__ +# define rDEST r4 /* pointer to previous word in dest */ +# define rSRC r5 /* pointer to previous word in src */ +# define rLOW r11 +# define rHIGH r12 +#else +# define rDEST r3 /* pointer to previous word in dest */ +# define rSRC r4 /* pointer to previous word in src */ +#endif #define rWORD r6 /* current word from src */ #define rFEFE r7 /* 0xfefefeff */ #define r7F7F r8 /* 0x7f7f7f7f */ #define rNEG r9 /* ~(word in src | 0x7f7f7f7f) */ #define rALT r10 /* alternate word from src */ + CHECK_BOUNDS_LOW (rSRC, rLOW, rHIGH) + CHECK_BOUNDS_LOW (rDEST, rLOW, rHIGH) + STORE_RETURN_BOUNDS (rLOW, rHIGH) + or rTMP, rSRC, rDEST clrlwi. rTMP, rTMP, 30 addi rDEST, rDEST, -4 @@ -71,6 +85,8 @@ L(g1): rlwinm. rTMP, rALT, 8, 24, 31 stbu rTMP, 1(rDEST) beqlr- stbu rALT, 1(rDEST) + CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt) + STORE_RETURN_VALUE (rDEST) blr /* Oh well. In this case, we just do a byte-by-byte copy. */ @@ -92,9 +108,13 @@ L(u0): lbzu rALT, 1(rSRC) cmpwi rWORD, 0 bne+ L(u0) L(u2): stbu rWORD, 1(rDEST) + CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt) + STORE_RETURN_VALUE (rDEST) blr L(u1): stbu rALT, 1(rDEST) + CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt) + STORE_RETURN_VALUE (rDEST) blr -END (__stpcpy) +END (BP_SYM (__stpcpy)) -weak_alias (__stpcpy, stpcpy) +weak_alias (BP_SYM (__stpcpy), BP_SYM (stpcpy)) |