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| author | Hale Wang <hale.wang@arm.com> | 2015-06-01 12:49:37 +0200 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2015-06-01 12:49:37 +0200 |
| commit | 24e054c8c8ed59b4b1009f81dc2760b914ad5b00 (patch) | |
| tree | 6a6adc6280e2ca5e7f486e12e1cbedf3618681b3 /newlib/libc/machine/arm/aeabi_memset-thumb2.S | |
| parent | b27c7d1d9a21496b0584a6f1252f66539151b42a (diff) | |
| download | cygnal-24e054c8c8ed59b4b1009f81dc2760b914ad5b00.tar.gz cygnal-24e054c8c8ed59b4b1009f81dc2760b914ad5b00.tar.bz2 cygnal-24e054c8c8ed59b4b1009f81dc2760b914ad5b00.zip | |
Update the assembler code to support old ARM architectures.
* libc/machine/arm/aeabi_memmove-arm.S (__aeabi_memmove): Update the
assembler implementation.
* libc/machine/arm/aeabi_memmove-thumb.S (__aeabi_memmove): Ditto.
* libc/machine/arm/aeabi_memmove-thumb2.S (__aeabi_memmove): Ditto.
* libc/machine/arm/aeabi_memset-arm.S (__aeabi_memset): Ditto.
* libc/machine/arm/aeabi_memset-thumb.S (__aeabi_memset): Ditto.
* libc/machine/arm/aeabi_memset-thumb2.S (__aeabi_memset): Ditto.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diffstat (limited to 'newlib/libc/machine/arm/aeabi_memset-thumb2.S')
| -rw-r--r-- | newlib/libc/machine/arm/aeabi_memset-thumb2.S | 50 |
1 files changed, 24 insertions, 26 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memset-thumb2.S b/newlib/libc/machine/arm/aeabi_memset-thumb2.S index cb78f8754..eaca1d8d7 100644 --- a/newlib/libc/machine/arm/aeabi_memset-thumb2.S +++ b/newlib/libc/machine/arm/aeabi_memset-thumb2.S @@ -33,35 +33,34 @@ ASM_ALIAS __aeabi_memset4 __aeabi_memset ASM_ALIAS __aeabi_memset8 __aeabi_memset __aeabi_memset: - .cfi_startproc push {r4, r5, r6} lsls r4, r0, #30 - beq .L14 + beq 10f subs r4, r1, #1 cmp r1, #0 - beq .L16 + beq 9f uxtb r5, r2 mov r3, r0 - b .L4 -.L6: + b 2f +1: subs r1, r4, #1 - cbz r4, .L16 + cbz r4, 9f mov r4, r1 -.L4: +2: strb r5, [r3], #1 lsls r1, r3, #30 - bne .L6 -.L2: + bne 1b +3: cmp r4, #3 - bls .L11 + bls 7f uxtb r5, r2 orr r5, r5, r5, lsl #8 cmp r4, #15 orr r5, r5, r5, lsl #16 - bls .L9 - add r1, r3, #16 + bls 5f mov r6, r4 -.L10: + add r1, r3, #16 +4: subs r6, r6, #16 cmp r6, #15 str r5, [r1, #-16] @@ -69,41 +68,40 @@ __aeabi_memset: str r5, [r1, #-8] str r5, [r1, #-4] add r1, r1, #16 - bhi .L10 + bhi 4b sub r1, r4, #16 bic r1, r1, #15 and r4, r4, #15 adds r1, r1, #16 cmp r4, #3 add r3, r3, r1 - bls .L11 -.L9: + bls 7f +5: mov r6, r3 mov r1, r4 -.L12: +6: subs r1, r1, #4 cmp r1, #3 str r5, [r6], #4 - bhi .L12 + bhi 6b subs r1, r4, #4 bic r1, r1, #3 adds r1, r1, #4 add r3, r3, r1 and r4, r4, #3 -.L11: - cbz r4, .L16 +7: + cbz r4, 9f uxtb r2, r2 add r4, r4, r3 -.L13: +8: strb r2, [r3], #1 cmp r3, r4 - bne .L13 -.L16: + bne 8b +9: pop {r4, r5, r6} bx lr -.L14: +10: mov r4, r1 mov r3, r0 - b .L2 - .cfi_endproc + b 3b .size __aeabi_memset, . - __aeabi_memset |