.text
ENTRY(__xtensa_copy_user)
- abi_entry_default
+#if !XCHAL_HAVE_LOOPS && defined(__XTENSA_CALL0_ABI__)
+#define STACK_SIZE 4
+#else
+#define STACK_SIZE 0
+#endif
+ abi_entry(STACK_SIZE)
# a2/ dst, a3/ src, a4/ len
mov a5, a2 # copy dst so that a2 is return value
mov a11, a4 # preserve original len for error case
__ssa8 a3 # set shift amount from byte offset
bnez a4, .Lsrcunaligned
movi a2, 0 # return success for len==0
- abi_ret_default
+ abi_ret(STACK_SIZE)
/*
* Destination is unaligned
#endif /* !XCHAL_HAVE_LOOPS */
.Lbytecopydone:
movi a2, 0 # return success for len bytes copied
- abi_ret_default
+ abi_ret(STACK_SIZE)
/*
* Destination and source are word-aligned.
EX(10f) s8i a6, a5, 0
.L5:
movi a2, 0 # return success for len bytes copied
- abi_ret_default
+ abi_ret(STACK_SIZE)
/*
* Destination is aligned, Source is unaligned
loopnez a7, .Loop2done
#else /* !XCHAL_HAVE_LOOPS */
beqz a7, .Loop2done
+#if defined(__XTENSA_CALL0_ABI__)
+ s32i a10, a1, 0
+ slli a10, a7, 4
+ add a10, a10, a3 # a10 = end of last 16B source chunk
+#else
slli a12, a7, 4
add a12, a12, a3 # a12 = end of last 16B source chunk
+#endif
#endif /* !XCHAL_HAVE_LOOPS */
.Loop2:
EX(10f) l32i a7, a3, 4
EX(10f) s32i a9, a5, 12
addi a5, a5, 16
#if !XCHAL_HAVE_LOOPS
+#if defined(__XTENSA_CALL0_ABI__)
+ blt a3, a10, .Loop2
+ l32i a10, a1, 0
+#else
blt a3, a12, .Loop2
+#endif
#endif /* !XCHAL_HAVE_LOOPS */
.Loop2done:
bbci.l a4, 3, .L12
EX(10f) s8i a6, a5, 0
.L15:
movi a2, 0 # return success for len bytes copied
- abi_ret_default
+ abi_ret(STACK_SIZE)
ENDPROC(__xtensa_copy_user)
10:
sub a2, a5, a2 /* a2 <-- bytes copied */
sub a2, a11, a2 /* a2 <-- bytes not copied */
- abi_ret_default
+ abi_ret(STACK_SIZE)