diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/lib/csum_partial.S | 144 |
1 files changed, 74 insertions, 70 deletions
diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S index 15611d9df7a..3bffdbb1c1f 100644 --- a/arch/mips/lib/csum_partial.S +++ b/arch/mips/lib/csum_partial.S @@ -12,19 +12,23 @@ #include <asm/regdef.h> #ifdef CONFIG_64BIT -#define T0 ta0 -#define T1 ta1 -#define T2 ta2 -#define T3 ta3 -#define T4 t0 -#define T7 t3 -#else -#define T0 t0 -#define T1 t1 -#define T2 t2 -#define T3 t3 -#define T4 t4 -#define T7 t7 +/* + * As we are sharing code base with the mips32 tree (which use the o32 ABI + * register definitions). We need to redefine the register definitions from + * the n64 ABI register naming to the o32 ABI register naming. + */ +#undef t0 +#undef t1 +#undef t2 +#undef t3 +#define t0 $8 +#define t1 $9 +#define t2 $10 +#define t3 $11 +#define t4 $12 +#define t5 $13 +#define t6 $14 +#define t7 $15 #endif #define ADDC(sum,reg) \ @@ -64,37 +68,37 @@ /* unknown src alignment and < 8 bytes to go */ small_csumcpy: - move a1, T2 + move a1, t2 - andi T0, a1, 4 - beqz T0, 1f - andi T0, a1, 2 + andi t0, a1, 4 + beqz t0, 1f + andi t0, a1, 2 /* Still a full word to go */ - ulw T1, (src) + ulw t1, (src) PTR_ADDIU src, 4 - ADDC(sum, T1) + ADDC(sum, t1) -1: move T1, zero - beqz T0, 1f - andi T0, a1, 1 +1: move t1, zero + beqz t0, 1f + andi t0, a1, 1 /* Still a halfword to go */ - ulhu T1, (src) + ulhu t1, (src) PTR_ADDIU src, 2 -1: beqz T0, 1f - sll T1, T1, 16 +1: beqz t0, 1f + sll t1, t1, 16 - lbu T2, (src) + lbu t2, (src) nop #ifdef __MIPSEB__ - sll T2, T2, 8 + sll t2, t2, 8 #endif - or T1, T2 + or t1, t2 -1: ADDC(sum, T1) +1: ADDC(sum, t1) /* fold checksum */ sll v1, sum, 16 @@ -104,7 +108,7 @@ small_csumcpy: addu sum, v1 /* odd buffer alignment? */ - beqz T7, 1f + beqz t7, 1f nop sll v1, sum, 8 srl sum, sum, 8 @@ -122,25 +126,25 @@ small_csumcpy: .align 5 LEAF(csum_partial) move sum, zero - move T7, zero + move t7, zero sltiu t8, a1, 0x8 bnez t8, small_csumcpy /* < 8 bytes to copy */ - move T2, a1 + move t2, a1 beqz a1, out - andi T7, src, 0x1 /* odd buffer? */ + andi t7, src, 0x1 /* odd buffer? */ hword_align: - beqz T7, word_align + beqz t7, word_align andi t8, src, 0x2 - lbu T0, (src) + lbu t0, (src) LONG_SUBU a1, a1, 0x1 #ifdef __MIPSEL__ - sll T0, T0, 8 + sll t0, t0, 8 #endif - ADDC(sum, T0) + ADDC(sum, t0) PTR_ADDU src, src, 0x1 andi t8, src, 0x2 @@ -148,9 +152,9 @@ word_align: beqz t8, dword_align sltiu t8, a1, 56 - lhu T0, (src) + lhu t0, (src) LONG_SUBU a1, a1, 0x2 - ADDC(sum, T0) + ADDC(sum, t0) sltiu t8, a1, 56 PTR_ADDU src, src, 0x2 @@ -162,9 +166,9 @@ dword_align: beqz t8, qword_align andi t8, src, 0x8 - lw T0, 0x00(src) + lw t0, 0x00(src) LONG_SUBU a1, a1, 0x4 - ADDC(sum, T0) + ADDC(sum, t0) PTR_ADDU src, src, 0x4 andi t8, src, 0x8 @@ -172,11 +176,11 @@ qword_align: beqz t8, oword_align andi t8, src, 0x10 - lw T0, 0x00(src) - lw T1, 0x04(src) + lw t0, 0x00(src) + lw t1, 0x04(src) LONG_SUBU a1, a1, 0x8 - ADDC(sum, T0) - ADDC(sum, T1) + ADDC(sum, t0) + ADDC(sum, t1) PTR_ADDU src, src, 0x8 andi t8, src, 0x10 @@ -184,46 +188,46 @@ oword_align: beqz t8, begin_movement LONG_SRL t8, a1, 0x7 - lw T3, 0x08(src) - lw T4, 0x0c(src) - lw T0, 0x00(src) - lw T1, 0x04(src) - ADDC(sum, T3) - ADDC(sum, T4) - ADDC(sum, T0) - ADDC(sum, T1) + lw t3, 0x08(src) + lw t4, 0x0c(src) + lw t0, 0x00(src) + lw t1, 0x04(src) + ADDC(sum, t3) + ADDC(sum, t4) + ADDC(sum, t0) + ADDC(sum, t1) LONG_SUBU a1, a1, 0x10 PTR_ADDU src, src, 0x10 LONG_SRL t8, a1, 0x7 begin_movement: beqz t8, 1f - andi T2, a1, 0x40 + andi t2, a1, 0x40 move_128bytes: - CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4) - CSUM_BIGCHUNK(src, 0x20, sum, T0, T1, T3, T4) - CSUM_BIGCHUNK(src, 0x40, sum, T0, T1, T3, T4) - CSUM_BIGCHUNK(src, 0x60, sum, T0, T1, T3, T4) + CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4) + CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4) + CSUM_BIGCHUNK(src, 0x40, sum, t0, t1, t3, t4) + CSUM_BIGCHUNK(src, 0x60, sum, t0, t1, t3, t4) LONG_SUBU t8, t8, 0x01 bnez t8, move_128bytes PTR_ADDU src, src, 0x80 1: - beqz T2, 1f - andi T2, a1, 0x20 + beqz t2, 1f + andi t2, a1, 0x20 move_64bytes: - CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4) - CSUM_BIGCHUNK(src, 0x20, sum, T0, T1, T3, T4) + CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4) + CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4) PTR_ADDU src, src, 0x40 1: - beqz T2, do_end_words + beqz t2, do_end_words andi t8, a1, 0x1c move_32bytes: - CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4) + CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4) andi t8, a1, 0x1c PTR_ADDU src, src, 0x20 @@ -232,22 +236,22 @@ do_end_words: LONG_SRL t8, t8, 0x2 end_words: - lw T0, (src) + lw t0, (src) LONG_SUBU t8, t8, 0x1 - ADDC(sum, T0) + ADDC(sum, t0) bnez t8, end_words PTR_ADDU src, src, 0x4 maybe_end_cruft: - andi T2, a1, 0x3 + andi t2, a1, 0x3 small_memcpy: - j small_csumcpy; move a1, T2 /* XXX ??? */ + j small_csumcpy; move a1, t2 /* XXX ??? */ beqz t2, out - move a1, T2 + move a1, t2 end_bytes: - lb T0, (src) + lb t0, (src) LONG_SUBU a1, a1, 0x1 bnez a2, end_bytes PTR_ADDU src, src, 0x1 |