forked from Minki/linux
[MIPS] Eleminate local symbols from the symbol table.
These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
parent
f21d850808
commit
c5ec1983e4
@ -96,13 +96,13 @@ LEAF(csum_partial)
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move t7, zero
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sltiu t8, a1, 0x8
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bnez t8, small_csumcpy /* < 8 bytes to copy */
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bnez t8, .Lsmall_csumcpy /* < 8 bytes to copy */
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move t2, a1
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andi t7, src, 0x1 /* odd buffer? */
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hword_align:
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beqz t7, word_align
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.Lhword_align:
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beqz t7, .Lword_align
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andi t8, src, 0x2
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lbu t0, (src)
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@ -114,8 +114,8 @@ hword_align:
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PTR_ADDU src, src, 0x1
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andi t8, src, 0x2
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word_align:
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beqz t8, dword_align
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.Lword_align:
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beqz t8, .Ldword_align
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sltiu t8, a1, 56
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lhu t0, (src)
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@ -124,12 +124,12 @@ word_align:
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sltiu t8, a1, 56
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PTR_ADDU src, src, 0x2
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dword_align:
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bnez t8, do_end_words
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.Ldword_align:
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bnez t8, .Ldo_end_words
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move t8, a1
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andi t8, src, 0x4
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beqz t8, qword_align
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beqz t8, .Lqword_align
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andi t8, src, 0x8
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lw t0, 0x00(src)
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@ -138,8 +138,8 @@ dword_align:
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PTR_ADDU src, src, 0x4
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andi t8, src, 0x8
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qword_align:
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beqz t8, oword_align
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.Lqword_align:
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beqz t8, .Loword_align
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andi t8, src, 0x10
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#ifdef USE_DOUBLE
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@ -156,8 +156,8 @@ qword_align:
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PTR_ADDU src, src, 0x8
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andi t8, src, 0x10
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oword_align:
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beqz t8, begin_movement
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.Loword_align:
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beqz t8, .Lbegin_movement
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LONG_SRL t8, a1, 0x7
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#ifdef USE_DOUBLE
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@ -172,11 +172,11 @@ oword_align:
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PTR_ADDU src, src, 0x10
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LONG_SRL t8, a1, 0x7
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begin_movement:
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.Lbegin_movement:
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beqz t8, 1f
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andi t2, a1, 0x40
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move_128bytes:
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.Lmove_128bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x40, sum, t0, t1, t3, t4)
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@ -184,43 +184,43 @@ move_128bytes:
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LONG_SUBU t8, t8, 0x01
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.set reorder /* DADDI_WAR */
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PTR_ADDU src, src, 0x80
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bnez t8, move_128bytes
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bnez t8, .Lmove_128bytes
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.set noreorder
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1:
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beqz t2, 1f
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andi t2, a1, 0x20
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move_64bytes:
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.Lmove_64bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
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PTR_ADDU src, src, 0x40
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1:
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beqz t2, do_end_words
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beqz t2, .Ldo_end_words
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andi t8, a1, 0x1c
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move_32bytes:
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.Lmove_32bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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andi t8, a1, 0x1c
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PTR_ADDU src, src, 0x20
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do_end_words:
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beqz t8, small_csumcpy
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.Ldo_end_words:
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beqz t8, .Lsmall_csumcpy
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andi t2, a1, 0x3
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LONG_SRL t8, t8, 0x2
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end_words:
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.Lend_words:
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lw t0, (src)
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LONG_SUBU t8, t8, 0x1
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ADDC(sum, t0)
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.set reorder /* DADDI_WAR */
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PTR_ADDU src, src, 0x4
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bnez t8, end_words
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bnez t8, .Lend_words
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.set noreorder
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/* unknown src alignment and < 8 bytes to go */
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small_csumcpy:
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.Lsmall_csumcpy:
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move a1, t2
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andi t0, a1, 4
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@ -413,48 +413,48 @@ FEXPORT(csum_partial_copy_nocheck)
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*/
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sltu t2, len, NBYTES
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and t1, dst, ADDRMASK
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bnez t2, copy_bytes_checklen
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bnez t2, .Lcopy_bytes_checklen
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and t0, src, ADDRMASK
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andi odd, dst, 0x1 /* odd buffer? */
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bnez t1, dst_unaligned
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bnez t1, .Ldst_unaligned
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nop
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bnez t0, src_unaligned_dst_aligned
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bnez t0, .Lsrc_unaligned_dst_aligned
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/*
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* use delay slot for fall-through
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* src and dst are aligned; need to compute rem
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*/
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both_aligned:
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.Lboth_aligned:
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SRL t0, len, LOG_NBYTES+3 # +3 for 8 units/iter
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beqz t0, cleanup_both_aligned # len < 8*NBYTES
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beqz t0, .Lcleanup_both_aligned # len < 8*NBYTES
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nop
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SUB len, 8*NBYTES # subtract here for bgez loop
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.align 4
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1:
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EXC( LOAD t0, UNIT(0)(src), l_exc)
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EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
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EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
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EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
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EXC( LOAD t4, UNIT(4)(src), l_exc_copy)
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EXC( LOAD t5, UNIT(5)(src), l_exc_copy)
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EXC( LOAD t6, UNIT(6)(src), l_exc_copy)
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EXC( LOAD t7, UNIT(7)(src), l_exc_copy)
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EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
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EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
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EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
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EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
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EXC( LOAD t4, UNIT(4)(src), .Ll_exc_copy)
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EXC( LOAD t5, UNIT(5)(src), .Ll_exc_copy)
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EXC( LOAD t6, UNIT(6)(src), .Ll_exc_copy)
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EXC( LOAD t7, UNIT(7)(src), .Ll_exc_copy)
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SUB len, len, 8*NBYTES
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ADD src, src, 8*NBYTES
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EXC( STORE t0, UNIT(0)(dst), s_exc)
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EXC( STORE t0, UNIT(0)(dst), .Ls_exc)
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ADDC(sum, t0)
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EXC( STORE t1, UNIT(1)(dst), s_exc)
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EXC( STORE t1, UNIT(1)(dst), .Ls_exc)
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ADDC(sum, t1)
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EXC( STORE t2, UNIT(2)(dst), s_exc)
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EXC( STORE t2, UNIT(2)(dst), .Ls_exc)
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ADDC(sum, t2)
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EXC( STORE t3, UNIT(3)(dst), s_exc)
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EXC( STORE t3, UNIT(3)(dst), .Ls_exc)
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ADDC(sum, t3)
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EXC( STORE t4, UNIT(4)(dst), s_exc)
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EXC( STORE t4, UNIT(4)(dst), .Ls_exc)
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ADDC(sum, t4)
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EXC( STORE t5, UNIT(5)(dst), s_exc)
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EXC( STORE t5, UNIT(5)(dst), .Ls_exc)
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ADDC(sum, t5)
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EXC( STORE t6, UNIT(6)(dst), s_exc)
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EXC( STORE t6, UNIT(6)(dst), .Ls_exc)
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ADDC(sum, t6)
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EXC( STORE t7, UNIT(7)(dst), s_exc)
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EXC( STORE t7, UNIT(7)(dst), .Ls_exc)
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ADDC(sum, t7)
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.set reorder /* DADDI_WAR */
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ADD dst, dst, 8*NBYTES
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@ -465,44 +465,44 @@ EXC( STORE t7, UNIT(7)(dst), s_exc)
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/*
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* len == the number of bytes left to copy < 8*NBYTES
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*/
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cleanup_both_aligned:
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.Lcleanup_both_aligned:
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#define rem t7
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beqz len, done
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beqz len, .Ldone
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sltu t0, len, 4*NBYTES
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bnez t0, less_than_4units
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bnez t0, .Lless_than_4units
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and rem, len, (NBYTES-1) # rem = len % NBYTES
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/*
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* len >= 4*NBYTES
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*/
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EXC( LOAD t0, UNIT(0)(src), l_exc)
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EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
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EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
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EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
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EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
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EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
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EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
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EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
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SUB len, len, 4*NBYTES
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ADD src, src, 4*NBYTES
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EXC( STORE t0, UNIT(0)(dst), s_exc)
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EXC( STORE t0, UNIT(0)(dst), .Ls_exc)
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ADDC(sum, t0)
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EXC( STORE t1, UNIT(1)(dst), s_exc)
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EXC( STORE t1, UNIT(1)(dst), .Ls_exc)
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ADDC(sum, t1)
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EXC( STORE t2, UNIT(2)(dst), s_exc)
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EXC( STORE t2, UNIT(2)(dst), .Ls_exc)
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ADDC(sum, t2)
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EXC( STORE t3, UNIT(3)(dst), s_exc)
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EXC( STORE t3, UNIT(3)(dst), .Ls_exc)
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ADDC(sum, t3)
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.set reorder /* DADDI_WAR */
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ADD dst, dst, 4*NBYTES
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beqz len, done
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beqz len, .Ldone
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.set noreorder
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less_than_4units:
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.Lless_than_4units:
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/*
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* rem = len % NBYTES
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*/
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beq rem, len, copy_bytes
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beq rem, len, .Lcopy_bytes
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nop
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1:
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EXC( LOAD t0, 0(src), l_exc)
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EXC( LOAD t0, 0(src), .Ll_exc)
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ADD src, src, NBYTES
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SUB len, len, NBYTES
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EXC( STORE t0, 0(dst), s_exc)
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EXC( STORE t0, 0(dst), .Ls_exc)
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ADDC(sum, t0)
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.set reorder /* DADDI_WAR */
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ADD dst, dst, NBYTES
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@ -521,20 +521,20 @@ EXC( STORE t0, 0(dst), s_exc)
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* more instruction-level parallelism.
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*/
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#define bits t2
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beqz len, done
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beqz len, .Ldone
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ADD t1, dst, len # t1 is just past last byte of dst
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li bits, 8*NBYTES
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SLL rem, len, 3 # rem = number of bits to keep
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EXC( LOAD t0, 0(src), l_exc)
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EXC( LOAD t0, 0(src), .Ll_exc)
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SUB bits, bits, rem # bits = number of bits to discard
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SHIFT_DISCARD t0, t0, bits
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EXC( STREST t0, -1(t1), s_exc)
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EXC( STREST t0, -1(t1), .Ls_exc)
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SHIFT_DISCARD_REVERT t0, t0, bits
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.set reorder
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ADDC(sum, t0)
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b done
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b .Ldone
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.set noreorder
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dst_unaligned:
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.Ldst_unaligned:
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/*
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* dst is unaligned
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* t0 = src & ADDRMASK
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@ -545,25 +545,25 @@ dst_unaligned:
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* Set match = (src and dst have same alignment)
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*/
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#define match rem
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EXC( LDFIRST t3, FIRST(0)(src), l_exc)
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EXC( LDFIRST t3, FIRST(0)(src), .Ll_exc)
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ADD t2, zero, NBYTES
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EXC( LDREST t3, REST(0)(src), l_exc_copy)
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EXC( LDREST t3, REST(0)(src), .Ll_exc_copy)
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SUB t2, t2, t1 # t2 = number of bytes copied
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xor match, t0, t1
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EXC( STFIRST t3, FIRST(0)(dst), s_exc)
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EXC( STFIRST t3, FIRST(0)(dst), .Ls_exc)
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SLL t4, t1, 3 # t4 = number of bits to discard
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SHIFT_DISCARD t3, t3, t4
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/* no SHIFT_DISCARD_REVERT to handle odd buffer properly */
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ADDC(sum, t3)
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beq len, t2, done
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beq len, t2, .Ldone
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SUB len, len, t2
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ADD dst, dst, t2
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beqz match, both_aligned
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beqz match, .Lboth_aligned
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ADD src, src, t2
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src_unaligned_dst_aligned:
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.Lsrc_unaligned_dst_aligned:
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SRL t0, len, LOG_NBYTES+2 # +2 for 4 units/iter
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beqz t0, cleanup_src_unaligned
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beqz t0, .Lcleanup_src_unaligned
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and rem, len, (4*NBYTES-1) # rem = len % 4*NBYTES
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1:
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/*
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@ -572,53 +572,53 @@ src_unaligned_dst_aligned:
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* It's OK to load FIRST(N+1) before REST(N) because the two addresses
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* are to the same unit (unless src is aligned, but it's not).
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*/
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EXC( LDFIRST t0, FIRST(0)(src), l_exc)
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EXC( LDFIRST t1, FIRST(1)(src), l_exc_copy)
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EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
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EXC( LDFIRST t1, FIRST(1)(src), .Ll_exc_copy)
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SUB len, len, 4*NBYTES
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EXC( LDREST t0, REST(0)(src), l_exc_copy)
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EXC( LDREST t1, REST(1)(src), l_exc_copy)
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EXC( LDFIRST t2, FIRST(2)(src), l_exc_copy)
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EXC( LDFIRST t3, FIRST(3)(src), l_exc_copy)
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EXC( LDREST t2, REST(2)(src), l_exc_copy)
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EXC( LDREST t3, REST(3)(src), l_exc_copy)
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EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
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EXC( LDREST t1, REST(1)(src), .Ll_exc_copy)
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EXC( LDFIRST t2, FIRST(2)(src), .Ll_exc_copy)
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EXC( LDFIRST t3, FIRST(3)(src), .Ll_exc_copy)
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EXC( LDREST t2, REST(2)(src), .Ll_exc_copy)
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EXC( LDREST t3, REST(3)(src), .Ll_exc_copy)
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ADD src, src, 4*NBYTES
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#ifdef CONFIG_CPU_SB1
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nop # improves slotting
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#endif
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EXC( STORE t0, UNIT(0)(dst), s_exc)
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EXC( STORE t0, UNIT(0)(dst), .Ls_exc)
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ADDC(sum, t0)
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EXC( STORE t1, UNIT(1)(dst), s_exc)
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EXC( STORE t1, UNIT(1)(dst), .Ls_exc)
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ADDC(sum, t1)
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EXC( STORE t2, UNIT(2)(dst), s_exc)
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EXC( STORE t2, UNIT(2)(dst), .Ls_exc)
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ADDC(sum, t2)
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EXC( STORE t3, UNIT(3)(dst), s_exc)
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EXC( STORE t3, UNIT(3)(dst), .Ls_exc)
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ADDC(sum, t3)
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.set reorder /* DADDI_WAR */
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ADD dst, dst, 4*NBYTES
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bne len, rem, 1b
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.set noreorder
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cleanup_src_unaligned:
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beqz len, done
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.Lcleanup_src_unaligned:
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beqz len, .Ldone
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and rem, len, NBYTES-1 # rem = len % NBYTES
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beq rem, len, copy_bytes
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beq rem, len, .Lcopy_bytes
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nop
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1:
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EXC( LDFIRST t0, FIRST(0)(src), l_exc)
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EXC( LDREST t0, REST(0)(src), l_exc_copy)
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EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
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EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
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ADD src, src, NBYTES
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SUB len, len, NBYTES
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EXC( STORE t0, 0(dst), s_exc)
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EXC( STORE t0, 0(dst), .Ls_exc)
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ADDC(sum, t0)
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.set reorder /* DADDI_WAR */
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ADD dst, dst, NBYTES
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bne len, rem, 1b
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.set noreorder
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copy_bytes_checklen:
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beqz len, done
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.Lcopy_bytes_checklen:
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beqz len, .Ldone
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nop
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copy_bytes:
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.Lcopy_bytes:
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/* 0 < len < NBYTES */
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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#define SHIFT_START 0
|
||||
@ -629,14 +629,14 @@ copy_bytes:
|
||||
#endif
|
||||
move t2, zero # partial word
|
||||
li t3, SHIFT_START # shift
|
||||
/* use l_exc_copy here to return correct sum on fault */
|
||||
/* use .Ll_exc_copy here to return correct sum on fault */
|
||||
#define COPY_BYTE(N) \
|
||||
EXC( lbu t0, N(src), l_exc_copy); \
|
||||
EXC( lbu t0, N(src), .Ll_exc_copy); \
|
||||
SUB len, len, 1; \
|
||||
EXC( sb t0, N(dst), s_exc); \
|
||||
EXC( sb t0, N(dst), .Ls_exc); \
|
||||
SLLV t0, t0, t3; \
|
||||
addu t3, SHIFT_INC; \
|
||||
beqz len, copy_bytes_done; \
|
||||
beqz len, .Lcopy_bytes_done; \
|
||||
or t2, t0
|
||||
|
||||
COPY_BYTE(0)
|
||||
@ -647,14 +647,14 @@ EXC( sb t0, N(dst), s_exc); \
|
||||
COPY_BYTE(4)
|
||||
COPY_BYTE(5)
|
||||
#endif
|
||||
EXC( lbu t0, NBYTES-2(src), l_exc_copy)
|
||||
EXC( lbu t0, NBYTES-2(src), .Ll_exc_copy)
|
||||
SUB len, len, 1
|
||||
EXC( sb t0, NBYTES-2(dst), s_exc)
|
||||
EXC( sb t0, NBYTES-2(dst), .Ls_exc)
|
||||
SLLV t0, t0, t3
|
||||
or t2, t0
|
||||
copy_bytes_done:
|
||||
.Lcopy_bytes_done:
|
||||
ADDC(sum, t2)
|
||||
done:
|
||||
.Ldone:
|
||||
/* fold checksum */
|
||||
.set push
|
||||
.set noat
|
||||
@ -685,7 +685,7 @@ done:
|
||||
jr ra
|
||||
.set noreorder
|
||||
|
||||
l_exc_copy:
|
||||
.Ll_exc_copy:
|
||||
/*
|
||||
* Copy bytes from src until faulting load address (or until a
|
||||
* lb faults)
|
||||
@ -700,7 +700,7 @@ l_exc_copy:
|
||||
li t2, SHIFT_START
|
||||
LOAD t0, THREAD_BUADDR(t0)
|
||||
1:
|
||||
EXC( lbu t1, 0(src), l_exc)
|
||||
EXC( lbu t1, 0(src), .Ll_exc)
|
||||
ADD src, src, 1
|
||||
sb t1, 0(dst) # can't fault -- we're copy_from_user
|
||||
SLLV t1, t1, t2
|
||||
@ -710,7 +710,7 @@ EXC( lbu t1, 0(src), l_exc)
|
||||
ADD dst, dst, 1
|
||||
bne src, t0, 1b
|
||||
.set noreorder
|
||||
l_exc:
|
||||
.Ll_exc:
|
||||
LOAD t0, TI_TASK($28)
|
||||
nop
|
||||
LOAD t0, THREAD_BUADDR(t0) # t0 is just past last good address
|
||||
@ -729,7 +729,7 @@ l_exc:
|
||||
*/
|
||||
.set reorder /* DADDI_WAR */
|
||||
SUB src, len, 1
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
.set noreorder
|
||||
1: sb zero, 0(dst)
|
||||
ADD dst, dst, 1
|
||||
@ -744,10 +744,10 @@ l_exc:
|
||||
SUB src, src, v1
|
||||
#endif
|
||||
li v1, -EFAULT
|
||||
b done
|
||||
b .Ldone
|
||||
sw v1, (errptr)
|
||||
|
||||
s_exc:
|
||||
.Ls_exc:
|
||||
li v0, -1 /* invalid checksum */
|
||||
li v1, -EFAULT
|
||||
jr ra
|
||||
|
||||
@ -209,36 +209,36 @@ LEAF(__copy_user_inatomic)
|
||||
and t1, dst, ADDRMASK
|
||||
PREF( 0, 1*32(src) )
|
||||
PREF( 1, 1*32(dst) )
|
||||
bnez t2, copy_bytes_checklen
|
||||
bnez t2, .Lcopy_bytes_checklen
|
||||
and t0, src, ADDRMASK
|
||||
PREF( 0, 2*32(src) )
|
||||
PREF( 1, 2*32(dst) )
|
||||
bnez t1, dst_unaligned
|
||||
bnez t1, .Ldst_unaligned
|
||||
nop
|
||||
bnez t0, src_unaligned_dst_aligned
|
||||
bnez t0, .Lsrc_unaligned_dst_aligned
|
||||
/*
|
||||
* use delay slot for fall-through
|
||||
* src and dst are aligned; need to compute rem
|
||||
*/
|
||||
both_aligned:
|
||||
SRL t0, len, LOG_NBYTES+3 # +3 for 8 units/iter
|
||||
beqz t0, cleanup_both_aligned # len < 8*NBYTES
|
||||
and rem, len, (8*NBYTES-1) # rem = len % (8*NBYTES)
|
||||
.Lboth_aligned:
|
||||
SRL t0, len, LOG_NBYTES+3 # +3 for 8 units/iter
|
||||
beqz t0, .Lcleanup_both_aligned # len < 8*NBYTES
|
||||
and rem, len, (8*NBYTES-1) # rem = len % (8*NBYTES)
|
||||
PREF( 0, 3*32(src) )
|
||||
PREF( 1, 3*32(dst) )
|
||||
.align 4
|
||||
1:
|
||||
EXC( LOAD t0, UNIT(0)(src), l_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
|
||||
EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
|
||||
SUB len, len, 8*NBYTES
|
||||
EXC( LOAD t4, UNIT(4)(src), l_exc_copy)
|
||||
EXC( LOAD t7, UNIT(5)(src), l_exc_copy)
|
||||
EXC( LOAD t4, UNIT(4)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t7, UNIT(5)(src), .Ll_exc_copy)
|
||||
STORE t0, UNIT(0)(dst)
|
||||
STORE t1, UNIT(1)(dst)
|
||||
EXC( LOAD t0, UNIT(6)(src), l_exc_copy)
|
||||
EXC( LOAD t1, UNIT(7)(src), l_exc_copy)
|
||||
EXC( LOAD t0, UNIT(6)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t1, UNIT(7)(src), .Ll_exc_copy)
|
||||
ADD src, src, 8*NBYTES
|
||||
ADD dst, dst, 8*NBYTES
|
||||
STORE t2, UNIT(-6)(dst)
|
||||
@ -255,18 +255,18 @@ EXC( LOAD t1, UNIT(7)(src), l_exc_copy)
|
||||
/*
|
||||
* len == rem == the number of bytes left to copy < 8*NBYTES
|
||||
*/
|
||||
cleanup_both_aligned:
|
||||
beqz len, done
|
||||
.Lcleanup_both_aligned:
|
||||
beqz len, .Ldone
|
||||
sltu t0, len, 4*NBYTES
|
||||
bnez t0, less_than_4units
|
||||
bnez t0, .Lless_than_4units
|
||||
and rem, len, (NBYTES-1) # rem = len % NBYTES
|
||||
/*
|
||||
* len >= 4*NBYTES
|
||||
*/
|
||||
EXC( LOAD t0, UNIT(0)(src), l_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
|
||||
EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
|
||||
SUB len, len, 4*NBYTES
|
||||
ADD src, src, 4*NBYTES
|
||||
STORE t0, UNIT(0)(dst)
|
||||
@ -275,16 +275,16 @@ EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
|
||||
STORE t3, UNIT(3)(dst)
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, 4*NBYTES
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
.set noreorder
|
||||
less_than_4units:
|
||||
.Lless_than_4units:
|
||||
/*
|
||||
* rem = len % NBYTES
|
||||
*/
|
||||
beq rem, len, copy_bytes
|
||||
beq rem, len, .Lcopy_bytes
|
||||
nop
|
||||
1:
|
||||
EXC( LOAD t0, 0(src), l_exc)
|
||||
EXC( LOAD t0, 0(src), .Ll_exc)
|
||||
ADD src, src, NBYTES
|
||||
SUB len, len, NBYTES
|
||||
STORE t0, 0(dst)
|
||||
@ -305,17 +305,17 @@ EXC( LOAD t0, 0(src), l_exc)
|
||||
* more instruction-level parallelism.
|
||||
*/
|
||||
#define bits t2
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
ADD t1, dst, len # t1 is just past last byte of dst
|
||||
li bits, 8*NBYTES
|
||||
SLL rem, len, 3 # rem = number of bits to keep
|
||||
EXC( LOAD t0, 0(src), l_exc)
|
||||
EXC( LOAD t0, 0(src), .Ll_exc)
|
||||
SUB bits, bits, rem # bits = number of bits to discard
|
||||
SHIFT_DISCARD t0, t0, bits
|
||||
STREST t0, -1(t1)
|
||||
jr ra
|
||||
move len, zero
|
||||
dst_unaligned:
|
||||
.Ldst_unaligned:
|
||||
/*
|
||||
* dst is unaligned
|
||||
* t0 = src & ADDRMASK
|
||||
@ -326,22 +326,22 @@ dst_unaligned:
|
||||
* Set match = (src and dst have same alignment)
|
||||
*/
|
||||
#define match rem
|
||||
EXC( LDFIRST t3, FIRST(0)(src), l_exc)
|
||||
EXC( LDFIRST t3, FIRST(0)(src), .Ll_exc)
|
||||
ADD t2, zero, NBYTES
|
||||
EXC( LDREST t3, REST(0)(src), l_exc_copy)
|
||||
EXC( LDREST t3, REST(0)(src), .Ll_exc_copy)
|
||||
SUB t2, t2, t1 # t2 = number of bytes copied
|
||||
xor match, t0, t1
|
||||
STFIRST t3, FIRST(0)(dst)
|
||||
beq len, t2, done
|
||||
beq len, t2, .Ldone
|
||||
SUB len, len, t2
|
||||
ADD dst, dst, t2
|
||||
beqz match, both_aligned
|
||||
beqz match, .Lboth_aligned
|
||||
ADD src, src, t2
|
||||
|
||||
src_unaligned_dst_aligned:
|
||||
.Lsrc_unaligned_dst_aligned:
|
||||
SRL t0, len, LOG_NBYTES+2 # +2 for 4 units/iter
|
||||
PREF( 0, 3*32(src) )
|
||||
beqz t0, cleanup_src_unaligned
|
||||
beqz t0, .Lcleanup_src_unaligned
|
||||
and rem, len, (4*NBYTES-1) # rem = len % 4*NBYTES
|
||||
PREF( 1, 3*32(dst) )
|
||||
1:
|
||||
@ -351,15 +351,15 @@ src_unaligned_dst_aligned:
|
||||
* It's OK to load FIRST(N+1) before REST(N) because the two addresses
|
||||
* are to the same unit (unless src is aligned, but it's not).
|
||||
*/
|
||||
EXC( LDFIRST t0, FIRST(0)(src), l_exc)
|
||||
EXC( LDFIRST t1, FIRST(1)(src), l_exc_copy)
|
||||
EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
|
||||
EXC( LDFIRST t1, FIRST(1)(src), .Ll_exc_copy)
|
||||
SUB len, len, 4*NBYTES
|
||||
EXC( LDREST t0, REST(0)(src), l_exc_copy)
|
||||
EXC( LDREST t1, REST(1)(src), l_exc_copy)
|
||||
EXC( LDFIRST t2, FIRST(2)(src), l_exc_copy)
|
||||
EXC( LDFIRST t3, FIRST(3)(src), l_exc_copy)
|
||||
EXC( LDREST t2, REST(2)(src), l_exc_copy)
|
||||
EXC( LDREST t3, REST(3)(src), l_exc_copy)
|
||||
EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t1, REST(1)(src), .Ll_exc_copy)
|
||||
EXC( LDFIRST t2, FIRST(2)(src), .Ll_exc_copy)
|
||||
EXC( LDFIRST t3, FIRST(3)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t2, REST(2)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t3, REST(3)(src), .Ll_exc_copy)
|
||||
PREF( 0, 9*32(src) ) # 0 is PREF_LOAD (not streamed)
|
||||
ADD src, src, 4*NBYTES
|
||||
#ifdef CONFIG_CPU_SB1
|
||||
@ -375,14 +375,14 @@ EXC( LDREST t3, REST(3)(src), l_exc_copy)
|
||||
bne len, rem, 1b
|
||||
.set noreorder
|
||||
|
||||
cleanup_src_unaligned:
|
||||
beqz len, done
|
||||
.Lcleanup_src_unaligned:
|
||||
beqz len, .Ldone
|
||||
and rem, len, NBYTES-1 # rem = len % NBYTES
|
||||
beq rem, len, copy_bytes
|
||||
beq rem, len, .Lcopy_bytes
|
||||
nop
|
||||
1:
|
||||
EXC( LDFIRST t0, FIRST(0)(src), l_exc)
|
||||
EXC( LDREST t0, REST(0)(src), l_exc_copy)
|
||||
EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
|
||||
EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
|
||||
ADD src, src, NBYTES
|
||||
SUB len, len, NBYTES
|
||||
STORE t0, 0(dst)
|
||||
@ -391,15 +391,15 @@ EXC( LDREST t0, REST(0)(src), l_exc_copy)
|
||||
bne len, rem, 1b
|
||||
.set noreorder
|
||||
|
||||
copy_bytes_checklen:
|
||||
beqz len, done
|
||||
.Lcopy_bytes_checklen:
|
||||
beqz len, .Ldone
|
||||
nop
|
||||
copy_bytes:
|
||||
.Lcopy_bytes:
|
||||
/* 0 < len < NBYTES */
|
||||
#define COPY_BYTE(N) \
|
||||
EXC( lb t0, N(src), l_exc); \
|
||||
EXC( lb t0, N(src), .Ll_exc); \
|
||||
SUB len, len, 1; \
|
||||
beqz len, done; \
|
||||
beqz len, .Ldone; \
|
||||
sb t0, N(dst)
|
||||
|
||||
COPY_BYTE(0)
|
||||
@ -410,16 +410,16 @@ EXC( lb t0, N(src), l_exc); \
|
||||
COPY_BYTE(4)
|
||||
COPY_BYTE(5)
|
||||
#endif
|
||||
EXC( lb t0, NBYTES-2(src), l_exc)
|
||||
EXC( lb t0, NBYTES-2(src), .Ll_exc)
|
||||
SUB len, len, 1
|
||||
jr ra
|
||||
sb t0, NBYTES-2(dst)
|
||||
done:
|
||||
.Ldone:
|
||||
jr ra
|
||||
nop
|
||||
END(__copy_user_inatomic)
|
||||
|
||||
l_exc_copy:
|
||||
.Ll_exc_copy:
|
||||
/*
|
||||
* Copy bytes from src until faulting load address (or until a
|
||||
* lb faults)
|
||||
@ -434,14 +434,14 @@ l_exc_copy:
|
||||
nop
|
||||
LOAD t0, THREAD_BUADDR(t0)
|
||||
1:
|
||||
EXC( lb t1, 0(src), l_exc)
|
||||
EXC( lb t1, 0(src), .Ll_exc)
|
||||
ADD src, src, 1
|
||||
sb t1, 0(dst) # can't fault -- we're copy_from_user
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, 1
|
||||
bne src, t0, 1b
|
||||
.set noreorder
|
||||
l_exc:
|
||||
.Ll_exc:
|
||||
LOAD t0, TI_TASK($28)
|
||||
nop
|
||||
LOAD t0, THREAD_BUADDR(t0) # t0 is just past last good address
|
||||
|
||||
@ -191,7 +191,7 @@
|
||||
.align 5
|
||||
LEAF(memcpy) /* a0=dst a1=src a2=len */
|
||||
move v0, dst /* return value */
|
||||
__memcpy:
|
||||
.L__memcpy:
|
||||
FEXPORT(__copy_user)
|
||||
/*
|
||||
* Note: dst & src may be unaligned, len may be 0
|
||||
@ -213,45 +213,45 @@ FEXPORT(__copy_user)
|
||||
and t1, dst, ADDRMASK
|
||||
PREF( 0, 1*32(src) )
|
||||
PREF( 1, 1*32(dst) )
|
||||
bnez t2, copy_bytes_checklen
|
||||
bnez t2, .Lcopy_bytes_checklen
|
||||
and t0, src, ADDRMASK
|
||||
PREF( 0, 2*32(src) )
|
||||
PREF( 1, 2*32(dst) )
|
||||
bnez t1, dst_unaligned
|
||||
bnez t1, .Ldst_unaligned
|
||||
nop
|
||||
bnez t0, src_unaligned_dst_aligned
|
||||
bnez t0, .Lsrc_unaligned_dst_aligned
|
||||
/*
|
||||
* use delay slot for fall-through
|
||||
* src and dst are aligned; need to compute rem
|
||||
*/
|
||||
both_aligned:
|
||||
.Lboth_aligned:
|
||||
SRL t0, len, LOG_NBYTES+3 # +3 for 8 units/iter
|
||||
beqz t0, cleanup_both_aligned # len < 8*NBYTES
|
||||
beqz t0, .Lcleanup_both_aligned # len < 8*NBYTES
|
||||
and rem, len, (8*NBYTES-1) # rem = len % (8*NBYTES)
|
||||
PREF( 0, 3*32(src) )
|
||||
PREF( 1, 3*32(dst) )
|
||||
.align 4
|
||||
1:
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( LOAD t0, UNIT(0)(src), l_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
|
||||
EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
|
||||
SUB len, len, 8*NBYTES
|
||||
EXC( LOAD t4, UNIT(4)(src), l_exc_copy)
|
||||
EXC( LOAD t7, UNIT(5)(src), l_exc_copy)
|
||||
EXC( STORE t0, UNIT(0)(dst), s_exc_p8u)
|
||||
EXC( STORE t1, UNIT(1)(dst), s_exc_p7u)
|
||||
EXC( LOAD t0, UNIT(6)(src), l_exc_copy)
|
||||
EXC( LOAD t1, UNIT(7)(src), l_exc_copy)
|
||||
EXC( LOAD t4, UNIT(4)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t7, UNIT(5)(src), .Ll_exc_copy)
|
||||
EXC( STORE t0, UNIT(0)(dst), .Ls_exc_p8u)
|
||||
EXC( STORE t1, UNIT(1)(dst), .Ls_exc_p7u)
|
||||
EXC( LOAD t0, UNIT(6)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t1, UNIT(7)(src), .Ll_exc_copy)
|
||||
ADD src, src, 8*NBYTES
|
||||
ADD dst, dst, 8*NBYTES
|
||||
EXC( STORE t2, UNIT(-6)(dst), s_exc_p6u)
|
||||
EXC( STORE t3, UNIT(-5)(dst), s_exc_p5u)
|
||||
EXC( STORE t4, UNIT(-4)(dst), s_exc_p4u)
|
||||
EXC( STORE t7, UNIT(-3)(dst), s_exc_p3u)
|
||||
EXC( STORE t0, UNIT(-2)(dst), s_exc_p2u)
|
||||
EXC( STORE t1, UNIT(-1)(dst), s_exc_p1u)
|
||||
EXC( STORE t2, UNIT(-6)(dst), .Ls_exc_p6u)
|
||||
EXC( STORE t3, UNIT(-5)(dst), .Ls_exc_p5u)
|
||||
EXC( STORE t4, UNIT(-4)(dst), .Ls_exc_p4u)
|
||||
EXC( STORE t7, UNIT(-3)(dst), .Ls_exc_p3u)
|
||||
EXC( STORE t0, UNIT(-2)(dst), .Ls_exc_p2u)
|
||||
EXC( STORE t1, UNIT(-1)(dst), .Ls_exc_p1u)
|
||||
PREF( 0, 8*32(src) )
|
||||
PREF( 1, 8*32(dst) )
|
||||
bne len, rem, 1b
|
||||
@ -260,41 +260,41 @@ EXC( STORE t1, UNIT(-1)(dst), s_exc_p1u)
|
||||
/*
|
||||
* len == rem == the number of bytes left to copy < 8*NBYTES
|
||||
*/
|
||||
cleanup_both_aligned:
|
||||
beqz len, done
|
||||
.Lcleanup_both_aligned:
|
||||
beqz len, .Ldone
|
||||
sltu t0, len, 4*NBYTES
|
||||
bnez t0, less_than_4units
|
||||
bnez t0, .Lless_than_4units
|
||||
and rem, len, (NBYTES-1) # rem = len % NBYTES
|
||||
/*
|
||||
* len >= 4*NBYTES
|
||||
*/
|
||||
EXC( LOAD t0, UNIT(0)(src), l_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), l_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), l_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), l_exc_copy)
|
||||
EXC( LOAD t0, UNIT(0)(src), .Ll_exc)
|
||||
EXC( LOAD t1, UNIT(1)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t2, UNIT(2)(src), .Ll_exc_copy)
|
||||
EXC( LOAD t3, UNIT(3)(src), .Ll_exc_copy)
|
||||
SUB len, len, 4*NBYTES
|
||||
ADD src, src, 4*NBYTES
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( STORE t0, UNIT(0)(dst), s_exc_p4u)
|
||||
EXC( STORE t1, UNIT(1)(dst), s_exc_p3u)
|
||||
EXC( STORE t2, UNIT(2)(dst), s_exc_p2u)
|
||||
EXC( STORE t3, UNIT(3)(dst), s_exc_p1u)
|
||||
EXC( STORE t0, UNIT(0)(dst), .Ls_exc_p4u)
|
||||
EXC( STORE t1, UNIT(1)(dst), .Ls_exc_p3u)
|
||||
EXC( STORE t2, UNIT(2)(dst), .Ls_exc_p2u)
|
||||
EXC( STORE t3, UNIT(3)(dst), .Ls_exc_p1u)
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, 4*NBYTES
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
.set noreorder
|
||||
less_than_4units:
|
||||
.Lless_than_4units:
|
||||
/*
|
||||
* rem = len % NBYTES
|
||||
*/
|
||||
beq rem, len, copy_bytes
|
||||
beq rem, len, .Lcopy_bytes
|
||||
nop
|
||||
1:
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( LOAD t0, 0(src), l_exc)
|
||||
EXC( LOAD t0, 0(src), .Ll_exc)
|
||||
ADD src, src, NBYTES
|
||||
SUB len, len, NBYTES
|
||||
EXC( STORE t0, 0(dst), s_exc_p1u)
|
||||
EXC( STORE t0, 0(dst), .Ls_exc_p1u)
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, NBYTES
|
||||
bne rem, len, 1b
|
||||
@ -312,17 +312,17 @@ EXC( STORE t0, 0(dst), s_exc_p1u)
|
||||
* more instruction-level parallelism.
|
||||
*/
|
||||
#define bits t2
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
ADD t1, dst, len # t1 is just past last byte of dst
|
||||
li bits, 8*NBYTES
|
||||
SLL rem, len, 3 # rem = number of bits to keep
|
||||
EXC( LOAD t0, 0(src), l_exc)
|
||||
EXC( LOAD t0, 0(src), .Ll_exc)
|
||||
SUB bits, bits, rem # bits = number of bits to discard
|
||||
SHIFT_DISCARD t0, t0, bits
|
||||
EXC( STREST t0, -1(t1), s_exc)
|
||||
EXC( STREST t0, -1(t1), .Ls_exc)
|
||||
jr ra
|
||||
move len, zero
|
||||
dst_unaligned:
|
||||
.Ldst_unaligned:
|
||||
/*
|
||||
* dst is unaligned
|
||||
* t0 = src & ADDRMASK
|
||||
@ -333,23 +333,23 @@ dst_unaligned:
|
||||
* Set match = (src and dst have same alignment)
|
||||
*/
|
||||
#define match rem
|
||||
EXC( LDFIRST t3, FIRST(0)(src), l_exc)
|
||||
EXC( LDFIRST t3, FIRST(0)(src), .Ll_exc)
|
||||
ADD t2, zero, NBYTES
|
||||
EXC( LDREST t3, REST(0)(src), l_exc_copy)
|
||||
EXC( LDREST t3, REST(0)(src), .Ll_exc_copy)
|
||||
SUB t2, t2, t1 # t2 = number of bytes copied
|
||||
xor match, t0, t1
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( STFIRST t3, FIRST(0)(dst), s_exc)
|
||||
beq len, t2, done
|
||||
EXC( STFIRST t3, FIRST(0)(dst), .Ls_exc)
|
||||
beq len, t2, .Ldone
|
||||
SUB len, len, t2
|
||||
ADD dst, dst, t2
|
||||
beqz match, both_aligned
|
||||
beqz match, .Lboth_aligned
|
||||
ADD src, src, t2
|
||||
|
||||
src_unaligned_dst_aligned:
|
||||
.Lsrc_unaligned_dst_aligned:
|
||||
SRL t0, len, LOG_NBYTES+2 # +2 for 4 units/iter
|
||||
PREF( 0, 3*32(src) )
|
||||
beqz t0, cleanup_src_unaligned
|
||||
beqz t0, .Lcleanup_src_unaligned
|
||||
and rem, len, (4*NBYTES-1) # rem = len % 4*NBYTES
|
||||
PREF( 1, 3*32(dst) )
|
||||
1:
|
||||
@ -360,58 +360,58 @@ src_unaligned_dst_aligned:
|
||||
* are to the same unit (unless src is aligned, but it's not).
|
||||
*/
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( LDFIRST t0, FIRST(0)(src), l_exc)
|
||||
EXC( LDFIRST t1, FIRST(1)(src), l_exc_copy)
|
||||
EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
|
||||
EXC( LDFIRST t1, FIRST(1)(src), .Ll_exc_copy)
|
||||
SUB len, len, 4*NBYTES
|
||||
EXC( LDREST t0, REST(0)(src), l_exc_copy)
|
||||
EXC( LDREST t1, REST(1)(src), l_exc_copy)
|
||||
EXC( LDFIRST t2, FIRST(2)(src), l_exc_copy)
|
||||
EXC( LDFIRST t3, FIRST(3)(src), l_exc_copy)
|
||||
EXC( LDREST t2, REST(2)(src), l_exc_copy)
|
||||
EXC( LDREST t3, REST(3)(src), l_exc_copy)
|
||||
EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t1, REST(1)(src), .Ll_exc_copy)
|
||||
EXC( LDFIRST t2, FIRST(2)(src), .Ll_exc_copy)
|
||||
EXC( LDFIRST t3, FIRST(3)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t2, REST(2)(src), .Ll_exc_copy)
|
||||
EXC( LDREST t3, REST(3)(src), .Ll_exc_copy)
|
||||
PREF( 0, 9*32(src) ) # 0 is PREF_LOAD (not streamed)
|
||||
ADD src, src, 4*NBYTES
|
||||
#ifdef CONFIG_CPU_SB1
|
||||
nop # improves slotting
|
||||
#endif
|
||||
EXC( STORE t0, UNIT(0)(dst), s_exc_p4u)
|
||||
EXC( STORE t1, UNIT(1)(dst), s_exc_p3u)
|
||||
EXC( STORE t2, UNIT(2)(dst), s_exc_p2u)
|
||||
EXC( STORE t3, UNIT(3)(dst), s_exc_p1u)
|
||||
EXC( STORE t0, UNIT(0)(dst), .Ls_exc_p4u)
|
||||
EXC( STORE t1, UNIT(1)(dst), .Ls_exc_p3u)
|
||||
EXC( STORE t2, UNIT(2)(dst), .Ls_exc_p2u)
|
||||
EXC( STORE t3, UNIT(3)(dst), .Ls_exc_p1u)
|
||||
PREF( 1, 9*32(dst) ) # 1 is PREF_STORE (not streamed)
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, 4*NBYTES
|
||||
bne len, rem, 1b
|
||||
.set noreorder
|
||||
|
||||
cleanup_src_unaligned:
|
||||
beqz len, done
|
||||
.Lcleanup_src_unaligned:
|
||||
beqz len, .Ldone
|
||||
and rem, len, NBYTES-1 # rem = len % NBYTES
|
||||
beq rem, len, copy_bytes
|
||||
beq rem, len, .Lcopy_bytes
|
||||
nop
|
||||
1:
|
||||
R10KCBARRIER(0(ra))
|
||||
EXC( LDFIRST t0, FIRST(0)(src), l_exc)
|
||||
EXC( LDREST t0, REST(0)(src), l_exc_copy)
|
||||
EXC( LDFIRST t0, FIRST(0)(src), .Ll_exc)
|
||||
EXC( LDREST t0, REST(0)(src), .Ll_exc_copy)
|
||||
ADD src, src, NBYTES
|
||||
SUB len, len, NBYTES
|
||||
EXC( STORE t0, 0(dst), s_exc_p1u)
|
||||
EXC( STORE t0, 0(dst), .Ls_exc_p1u)
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, NBYTES
|
||||
bne len, rem, 1b
|
||||
.set noreorder
|
||||
|
||||
copy_bytes_checklen:
|
||||
beqz len, done
|
||||
.Lcopy_bytes_checklen:
|
||||
beqz len, .Ldone
|
||||
nop
|
||||
copy_bytes:
|
||||
.Lcopy_bytes:
|
||||
/* 0 < len < NBYTES */
|
||||
R10KCBARRIER(0(ra))
|
||||
#define COPY_BYTE(N) \
|
||||
EXC( lb t0, N(src), l_exc); \
|
||||
EXC( lb t0, N(src), .Ll_exc); \
|
||||
SUB len, len, 1; \
|
||||
beqz len, done; \
|
||||
EXC( sb t0, N(dst), s_exc_p1)
|
||||
beqz len, .Ldone; \
|
||||
EXC( sb t0, N(dst), .Ls_exc_p1)
|
||||
|
||||
COPY_BYTE(0)
|
||||
COPY_BYTE(1)
|
||||
@ -421,16 +421,16 @@ EXC( sb t0, N(dst), s_exc_p1)
|
||||
COPY_BYTE(4)
|
||||
COPY_BYTE(5)
|
||||
#endif
|
||||
EXC( lb t0, NBYTES-2(src), l_exc)
|
||||
EXC( lb t0, NBYTES-2(src), .Ll_exc)
|
||||
SUB len, len, 1
|
||||
jr ra
|
||||
EXC( sb t0, NBYTES-2(dst), s_exc_p1)
|
||||
done:
|
||||
EXC( sb t0, NBYTES-2(dst), .Ls_exc_p1)
|
||||
.Ldone:
|
||||
jr ra
|
||||
nop
|
||||
END(memcpy)
|
||||
|
||||
l_exc_copy:
|
||||
.Ll_exc_copy:
|
||||
/*
|
||||
* Copy bytes from src until faulting load address (or until a
|
||||
* lb faults)
|
||||
@ -445,14 +445,14 @@ l_exc_copy:
|
||||
nop
|
||||
LOAD t0, THREAD_BUADDR(t0)
|
||||
1:
|
||||
EXC( lb t1, 0(src), l_exc)
|
||||
EXC( lb t1, 0(src), .Ll_exc)
|
||||
ADD src, src, 1
|
||||
sb t1, 0(dst) # can't fault -- we're copy_from_user
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD dst, dst, 1
|
||||
bne src, t0, 1b
|
||||
.set noreorder
|
||||
l_exc:
|
||||
.Ll_exc:
|
||||
LOAD t0, TI_TASK($28)
|
||||
nop
|
||||
LOAD t0, THREAD_BUADDR(t0) # t0 is just past last good address
|
||||
@ -471,7 +471,7 @@ l_exc:
|
||||
*/
|
||||
.set reorder /* DADDI_WAR */
|
||||
SUB src, len, 1
|
||||
beqz len, done
|
||||
beqz len, .Ldone
|
||||
.set noreorder
|
||||
1: sb zero, 0(dst)
|
||||
ADD dst, dst, 1
|
||||
@ -492,7 +492,7 @@ l_exc:
|
||||
|
||||
#define SEXC(n) \
|
||||
.set reorder; /* DADDI_WAR */ \
|
||||
s_exc_p ## n ## u: \
|
||||
.Ls_exc_p ## n ## u: \
|
||||
ADD len, len, n*NBYTES; \
|
||||
jr ra; \
|
||||
.set noreorder
|
||||
@ -506,12 +506,12 @@ SEXC(3)
|
||||
SEXC(2)
|
||||
SEXC(1)
|
||||
|
||||
s_exc_p1:
|
||||
.Ls_exc_p1:
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD len, len, 1
|
||||
jr ra
|
||||
.set noreorder
|
||||
s_exc:
|
||||
.Ls_exc:
|
||||
jr ra
|
||||
nop
|
||||
|
||||
@ -522,20 +522,20 @@ LEAF(memmove)
|
||||
sltu t0, a1, t0 # dst + len <= src -> memcpy
|
||||
sltu t1, a0, t1 # dst >= src + len -> memcpy
|
||||
and t0, t1
|
||||
beqz t0, __memcpy
|
||||
beqz t0, .L__memcpy
|
||||
move v0, a0 /* return value */
|
||||
beqz a2, r_out
|
||||
beqz a2, .Lr_out
|
||||
END(memmove)
|
||||
|
||||
/* fall through to __rmemcpy */
|
||||
LEAF(__rmemcpy) /* a0=dst a1=src a2=len */
|
||||
sltu t0, a1, a0
|
||||
beqz t0, r_end_bytes_up # src >= dst
|
||||
beqz t0, .Lr_end_bytes_up # src >= dst
|
||||
nop
|
||||
ADD a0, a2 # dst = dst + len
|
||||
ADD a1, a2 # src = src + len
|
||||
|
||||
r_end_bytes:
|
||||
.Lr_end_bytes:
|
||||
R10KCBARRIER(0(ra))
|
||||
lb t0, -1(a1)
|
||||
SUB a2, a2, 0x1
|
||||
@ -543,14 +543,14 @@ r_end_bytes:
|
||||
SUB a1, a1, 0x1
|
||||
.set reorder /* DADDI_WAR */
|
||||
SUB a0, a0, 0x1
|
||||
bnez a2, r_end_bytes
|
||||
bnez a2, .Lr_end_bytes
|
||||
.set noreorder
|
||||
|
||||
r_out:
|
||||
.Lr_out:
|
||||
jr ra
|
||||
move a2, zero
|
||||
|
||||
r_end_bytes_up:
|
||||
.Lr_end_bytes_up:
|
||||
R10KCBARRIER(0(ra))
|
||||
lb t0, (a1)
|
||||
SUB a2, a2, 0x1
|
||||
@ -558,7 +558,7 @@ r_end_bytes_up:
|
||||
ADD a1, a1, 0x1
|
||||
.set reorder /* DADDI_WAR */
|
||||
ADD a0, a0, 0x1
|
||||
bnez a2, r_end_bytes_up
|
||||
bnez a2, .Lr_end_bytes_up
|
||||
.set noreorder
|
||||
|
||||
jr ra
|
||||
|
||||
@ -72,7 +72,7 @@ LEAF(memset)
|
||||
|
||||
FEXPORT(__bzero)
|
||||
sltiu t0, a2, LONGSIZE /* very small region? */
|
||||
bnez t0, small_memset
|
||||
bnez t0, .Lsmall_memset
|
||||
andi t0, a0, LONGMASK /* aligned? */
|
||||
|
||||
#ifndef CONFIG_CPU_DADDI_WORKAROUNDS
|
||||
@ -88,28 +88,28 @@ FEXPORT(__bzero)
|
||||
|
||||
R10KCBARRIER(0(ra))
|
||||
#ifdef __MIPSEB__
|
||||
EX(LONG_S_L, a1, (a0), first_fixup) /* make word/dword aligned */
|
||||
EX(LONG_S_L, a1, (a0), .Lfirst_fixup) /* make word/dword aligned */
|
||||
#endif
|
||||
#ifdef __MIPSEL__
|
||||
EX(LONG_S_R, a1, (a0), first_fixup) /* make word/dword aligned */
|
||||
EX(LONG_S_R, a1, (a0), .Lfirst_fixup) /* make word/dword aligned */
|
||||
#endif
|
||||
PTR_SUBU a0, t0 /* long align ptr */
|
||||
PTR_ADDU a2, t0 /* correct size */
|
||||
|
||||
1: ori t1, a2, 0x3f /* # of full blocks */
|
||||
xori t1, 0x3f
|
||||
beqz t1, memset_partial /* no block to fill */
|
||||
beqz t1, .Lmemset_partial /* no block to fill */
|
||||
andi t0, a2, 0x40-LONGSIZE
|
||||
|
||||
PTR_ADDU t1, a0 /* end address */
|
||||
.set reorder
|
||||
1: PTR_ADDIU a0, 64
|
||||
R10KCBARRIER(0(ra))
|
||||
f_fill64 a0, -64, a1, fwd_fixup
|
||||
f_fill64 a0, -64, a1, .Lfwd_fixup
|
||||
bne t1, a0, 1b
|
||||
.set noreorder
|
||||
|
||||
memset_partial:
|
||||
.Lmemset_partial:
|
||||
R10KCBARRIER(0(ra))
|
||||
PTR_LA t1, 2f /* where to start */
|
||||
#if LONGSIZE == 4
|
||||
@ -126,7 +126,7 @@ memset_partial:
|
||||
.set push
|
||||
.set noreorder
|
||||
.set nomacro
|
||||
f_fill64 a0, -64, a1, partial_fixup /* ... but first do longs ... */
|
||||
f_fill64 a0, -64, a1, .Lpartial_fixup /* ... but first do longs ... */
|
||||
2: .set pop
|
||||
andi a2, LONGMASK /* At most one long to go */
|
||||
|
||||
@ -134,15 +134,15 @@ memset_partial:
|
||||
PTR_ADDU a0, a2 /* What's left */
|
||||
R10KCBARRIER(0(ra))
|
||||
#ifdef __MIPSEB__
|
||||
EX(LONG_S_R, a1, -1(a0), last_fixup)
|
||||
EX(LONG_S_R, a1, -1(a0), .Llast_fixup)
|
||||
#endif
|
||||
#ifdef __MIPSEL__
|
||||
EX(LONG_S_L, a1, -1(a0), last_fixup)
|
||||
EX(LONG_S_L, a1, -1(a0), .Llast_fixup)
|
||||
#endif
|
||||
1: jr ra
|
||||
move a2, zero
|
||||
|
||||
small_memset:
|
||||
.Lsmall_memset:
|
||||
beqz a2, 2f
|
||||
PTR_ADDU t1, a0, a2
|
||||
|
||||
@ -155,11 +155,11 @@ small_memset:
|
||||
move a2, zero
|
||||
END(memset)
|
||||
|
||||
first_fixup:
|
||||
.Lfirst_fixup:
|
||||
jr ra
|
||||
nop
|
||||
|
||||
fwd_fixup:
|
||||
.Lfwd_fixup:
|
||||
PTR_L t0, TI_TASK($28)
|
||||
LONG_L t0, THREAD_BUADDR(t0)
|
||||
andi a2, 0x3f
|
||||
@ -167,7 +167,7 @@ fwd_fixup:
|
||||
jr ra
|
||||
LONG_SUBU a2, t0
|
||||
|
||||
partial_fixup:
|
||||
.Lpartial_fixup:
|
||||
PTR_L t0, TI_TASK($28)
|
||||
LONG_L t0, THREAD_BUADDR(t0)
|
||||
andi a2, LONGMASK
|
||||
@ -175,6 +175,6 @@ partial_fixup:
|
||||
jr ra
|
||||
LONG_SUBU a2, t0
|
||||
|
||||
last_fixup:
|
||||
.Llast_fixup:
|
||||
jr ra
|
||||
andi v1, a2, LONGMASK
|
||||
|
||||
@ -24,16 +24,16 @@
|
||||
LEAF(__strlen_user_asm)
|
||||
LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok?
|
||||
and v0, a0
|
||||
bnez v0, fault
|
||||
bnez v0, .Lfault
|
||||
|
||||
FEXPORT(__strlen_user_nocheck_asm)
|
||||
move v0, a0
|
||||
1: EX(lb, t0, (v0), fault)
|
||||
1: EX(lb, t0, (v0), .Lfault)
|
||||
PTR_ADDIU v0, 1
|
||||
bnez t0, 1b
|
||||
PTR_SUBU v0, a0
|
||||
jr ra
|
||||
END(__strlen_user_asm)
|
||||
|
||||
fault: move v0, zero
|
||||
.Lfault: move v0, zero
|
||||
jr ra
|
||||
|
||||
@ -30,13 +30,13 @@
|
||||
LEAF(__strncpy_from_user_asm)
|
||||
LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok?
|
||||
and v0, a1
|
||||
bnez v0, fault
|
||||
bnez v0, .Lfault
|
||||
|
||||
FEXPORT(__strncpy_from_user_nocheck_asm)
|
||||
move v0, zero
|
||||
move v1, a1
|
||||
.set noreorder
|
||||
1: EX(lbu, t0, (v1), fault)
|
||||
1: EX(lbu, t0, (v1), .Lfault)
|
||||
PTR_ADDIU v1, 1
|
||||
R10KCBARRIER(0(ra))
|
||||
beqz t0, 2f
|
||||
@ -47,13 +47,13 @@ FEXPORT(__strncpy_from_user_nocheck_asm)
|
||||
bne v0, a2, 1b
|
||||
2: PTR_ADDU t0, a1, v0
|
||||
xor t0, a1
|
||||
bltz t0, fault
|
||||
bltz t0, .Lfault
|
||||
jr ra # return n
|
||||
END(__strncpy_from_user_asm)
|
||||
|
||||
fault: li v0, -EFAULT
|
||||
.Lfault: li v0, -EFAULT
|
||||
jr ra
|
||||
|
||||
.section __ex_table,"a"
|
||||
PTR 1b, fault
|
||||
PTR 1b, .Lfault
|
||||
.previous
|
||||
|
||||
@ -28,18 +28,19 @@
|
||||
LEAF(__strnlen_user_asm)
|
||||
LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok?
|
||||
and v0, a0
|
||||
bnez v0, fault
|
||||
bnez v0, .Lfault
|
||||
|
||||
FEXPORT(__strnlen_user_nocheck_asm)
|
||||
move v0, a0
|
||||
PTR_ADDU a1, a0 # stop pointer
|
||||
1: beq v0, a1, 1f # limit reached?
|
||||
EX(lb, t0, (v0), fault)
|
||||
EX(lb, t0, (v0), .Lfault)
|
||||
PTR_ADDU v0, 1
|
||||
bnez t0, 1b
|
||||
1: PTR_SUBU v0, a0
|
||||
jr ra
|
||||
END(__strnlen_user_asm)
|
||||
|
||||
fault: move v0, zero
|
||||
.Lfault:
|
||||
move v0, zero
|
||||
jr ra
|
||||
|
||||
Loading…
Reference in New Issue
Block a user