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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-thumb.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-thumb.S')
| -rw-r--r-- | newlib/libc/machine/arm/aeabi_memset-thumb.S | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memset-thumb.S b/newlib/libc/machine/arm/aeabi_memset-thumb.S index 5a4b808b4..aa8f2719e 100644 --- a/newlib/libc/machine/arm/aeabi_memset-thumb.S +++ b/newlib/libc/machine/arm/aeabi_memset-thumb.S @@ -33,31 +33,31 @@ ASM_ALIAS __aeabi_memset4 __aeabi_memset ASM_ALIAS __aeabi_memset8 __aeabi_memset __aeabi_memset: - .cfi_startproc push {r4, r5, r6, lr} lsls r3, r0, #30 - beq .L14 + beq 10f subs r4, r1, #1 cmp r1, #0 - beq .L16 - uxtb r6, r2 + beq 9f + lsls r5, r2, #24 + lsrs r5, r5, #24 movs r3, r0 - movs r5, #3 - b .L4 -.L6: + movs r6, #3 + b 2f +1: subs r1, r4, #1 cmp r4, #0 - beq .L16 + beq 9f movs r4, r1 -.L4: +2: adds r3, r3, #1 subs r1, r3, #1 - strb r6, [r1] - tst r3, r5 - bne .L6 -.L2: + strb r5, [r1] + tst r3, r6 + bne 1b +3: cmp r4, #3 - bls .L11 + bls 7f movs r5, #255 ands r5, r2 lsls r1, r5, #8 @@ -65,7 +65,7 @@ __aeabi_memset: lsls r1, r5, #16 orrs r5, r1 cmp r4, #15 - bls .L9 + bls 5f movs r6, r4 subs r6, r6, #16 lsrs r6, r6, #4 @@ -73,46 +73,48 @@ __aeabi_memset: lsls r6, r6, #4 movs r1, r3 adds r3, r3, r6 -.L10: +4: str r5, [r1] str r5, [r1, #4] str r5, [r1, #8] str r5, [r1, #12] adds r1, r1, #16 cmp r3, r1 - bne .L10 + bne 4b movs r1, #15 ands r4, r1 cmp r4, #3 - bls .L11 -.L9: + bls 7f +5: subs r6, r4, #4 lsrs r6, r6, #2 adds r6, r6, #1 lsls r6, r6, #2 movs r1, r3 adds r3, r3, r6 -.L12: +6: stmia r1!, {r5} cmp r3, r1 - bne .L12 + bne 6b movs r1, #3 ands r4, r1 -.L11: +7: cmp r4, #0 - beq .L16 - uxtb r2, r2 + beq 9f + lsls r2, r2, #24 + lsrs r2, r2, #24 adds r4, r3, r4 -.L13: +8: strb r2, [r3] adds r3, r3, #1 cmp r4, r3 - bne .L13 -.L16: - pop {r4, r5, r6, pc} -.L14: - movs r4, r1 + bne 8b +9: + pop {r4, r5, r6} + pop {r1} + bx r1 +10: movs r3, r0 - b .L2 - .cfi_endproc + movs r4, r1 + b 3b .size __aeabi_memset, . - __aeabi_memset |