# Makefile for Sparc library files..
#
-EXTRA_AFLAGS := -ansi -DST_DIV0=0x02
+asflags-y := -ansi -DST_DIV0=0x02
+ccflags-y := -Werror
-lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \
- strlen.o checksum.o blockops.o memscan.o memcmp.o strncmp.o \
- strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \
- copy_user.o locks.o atomic.o \
- lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o \
- cmpdi2.o
+lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o
+lib-$(CONFIG_SPARC32) += memcpy.o memset.o
+lib-y += strlen_$(BITS).o
+lib-y += checksum_$(BITS).o
+lib-$(CONFIG_SPARC32) += blockops.o
+lib-y += memscan_$(BITS).o memcmp_$(BITS).o strncmp_$(BITS).o
+lib-y += strncpy_from_user_$(BITS).o strlen_user_$(BITS).o
+lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
+lib-$(CONFIG_SPARC32) += copy_user.o locks.o
+lib-y += atomic_$(BITS).o
+lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o
+lib-y += rwsem_$(BITS).o
+lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o
-obj-y += iomap.o atomic32.o
+obj-y += iomap.o
+obj-$(CONFIG_SPARC32) += atomic32.o
+++ /dev/null
-/* atomic.S: Move this stuff here for better ICACHE hit rates.
- *
- * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
- */
-
-#include <asm/ptrace.h>
-#include <asm/psr.h>
-
- .text
- .align 4
-
- .globl __atomic_begin
-__atomic_begin:
-
-#ifndef CONFIG_SMP
- .globl ___xchg32_sun4c
-___xchg32_sun4c:
- rd %psr, %g3
- andcc %g3, PSR_PIL, %g0
- bne 1f
- nop
- wr %g3, PSR_PIL, %psr
- nop; nop; nop
-1:
- andcc %g3, PSR_PIL, %g0
- ld [%g1], %g7
- bne 1f
- st %g2, [%g1]
- wr %g3, 0x0, %psr
- nop; nop; nop
-1:
- mov %g7, %g2
- jmpl %o7 + 8, %g0
- mov %g4, %o7
-
- .globl ___xchg32_sun4md
-___xchg32_sun4md:
- swap [%g1], %g2
- jmpl %o7 + 8, %g0
- mov %g4, %o7
-#endif
-
- /* Read asm-sparc/atomic.h carefully to understand how this works for SMP.
- * Really, some things here for SMP are overly clever, go read the header.
- */
- .globl ___atomic24_add
-___atomic24_add:
- rd %psr, %g3 ! Keep the code small, old way was stupid
- nop; nop; nop; ! Let the bits set
- or %g3, PSR_PIL, %g7 ! Disable interrupts
- wr %g7, 0x0, %psr ! Set %psr
- nop; nop; nop; ! Let the bits set
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
- orcc %g7, 0x0, %g0 ! Did we get it?
- bne 1b ! Nope...
- ld [%g1], %g7 ! Load locked atomic24_t
- sra %g7, 8, %g7 ! Get signed 24-bit integer
- add %g7, %g2, %g2 ! Add in argument
- sll %g2, 8, %g7 ! Transpose back to atomic24_t
- st %g7, [%g1] ! Clever: This releases the lock as well.
-#else
- ld [%g1], %g7 ! Load locked atomic24_t
- add %g7, %g2, %g2 ! Add in argument
- st %g2, [%g1] ! Store it back
-#endif
- wr %g3, 0x0, %psr ! Restore original PSR_PIL
- nop; nop; nop; ! Let the bits set
- jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
- mov %g4, %o7 ! Restore %o7
-
- .globl ___atomic24_sub
-___atomic24_sub:
- rd %psr, %g3 ! Keep the code small, old way was stupid
- nop; nop; nop; ! Let the bits set
- or %g3, PSR_PIL, %g7 ! Disable interrupts
- wr %g7, 0x0, %psr ! Set %psr
- nop; nop; nop; ! Let the bits set
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
- orcc %g7, 0x0, %g0 ! Did we get it?
- bne 1b ! Nope...
- ld [%g1], %g7 ! Load locked atomic24_t
- sra %g7, 8, %g7 ! Get signed 24-bit integer
- sub %g7, %g2, %g2 ! Subtract argument
- sll %g2, 8, %g7 ! Transpose back to atomic24_t
- st %g7, [%g1] ! Clever: This releases the lock as well
-#else
- ld [%g1], %g7 ! Load locked atomic24_t
- sub %g7, %g2, %g2 ! Subtract argument
- st %g2, [%g1] ! Store it back
-#endif
- wr %g3, 0x0, %psr ! Restore original PSR_PIL
- nop; nop; nop; ! Let the bits set
- jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
- mov %g4, %o7 ! Restore %o7
-
- .globl __atomic_end
-__atomic_end:
--- /dev/null
+/* atomic.S: Move this stuff here for better ICACHE hit rates.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
+ */
+
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+
+ .text
+ .align 4
+
+ .globl __atomic_begin
+__atomic_begin:
+
+#ifndef CONFIG_SMP
+ .globl ___xchg32_sun4c
+___xchg32_sun4c:
+ rd %psr, %g3
+ andcc %g3, PSR_PIL, %g0
+ bne 1f
+ nop
+ wr %g3, PSR_PIL, %psr
+ nop; nop; nop
+1:
+ andcc %g3, PSR_PIL, %g0
+ ld [%g1], %g7
+ bne 1f
+ st %g2, [%g1]
+ wr %g3, 0x0, %psr
+ nop; nop; nop
+1:
+ mov %g7, %g2
+ jmpl %o7 + 8, %g0
+ mov %g4, %o7
+
+ .globl ___xchg32_sun4md
+___xchg32_sun4md:
+ swap [%g1], %g2
+ jmpl %o7 + 8, %g0
+ mov %g4, %o7
+#endif
+
+ /* Read asm-sparc/atomic.h carefully to understand how this works for SMP.
+ * Really, some things here for SMP are overly clever, go read the header.
+ */
+ .globl ___atomic24_add
+___atomic24_add:
+ rd %psr, %g3 ! Keep the code small, old way was stupid
+ nop; nop; nop; ! Let the bits set
+ or %g3, PSR_PIL, %g7 ! Disable interrupts
+ wr %g7, 0x0, %psr ! Set %psr
+ nop; nop; nop; ! Let the bits set
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
+ orcc %g7, 0x0, %g0 ! Did we get it?
+ bne 1b ! Nope...
+ ld [%g1], %g7 ! Load locked atomic24_t
+ sra %g7, 8, %g7 ! Get signed 24-bit integer
+ add %g7, %g2, %g2 ! Add in argument
+ sll %g2, 8, %g7 ! Transpose back to atomic24_t
+ st %g7, [%g1] ! Clever: This releases the lock as well.
+#else
+ ld [%g1], %g7 ! Load locked atomic24_t
+ add %g7, %g2, %g2 ! Add in argument
+ st %g2, [%g1] ! Store it back
+#endif
+ wr %g3, 0x0, %psr ! Restore original PSR_PIL
+ nop; nop; nop; ! Let the bits set
+ jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
+ mov %g4, %o7 ! Restore %o7
+
+ .globl ___atomic24_sub
+___atomic24_sub:
+ rd %psr, %g3 ! Keep the code small, old way was stupid
+ nop; nop; nop; ! Let the bits set
+ or %g3, PSR_PIL, %g7 ! Disable interrupts
+ wr %g7, 0x0, %psr ! Set %psr
+ nop; nop; nop; ! Let the bits set
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
+ orcc %g7, 0x0, %g0 ! Did we get it?
+ bne 1b ! Nope...
+ ld [%g1], %g7 ! Load locked atomic24_t
+ sra %g7, 8, %g7 ! Get signed 24-bit integer
+ sub %g7, %g2, %g2 ! Subtract argument
+ sll %g2, 8, %g7 ! Transpose back to atomic24_t
+ st %g7, [%g1] ! Clever: This releases the lock as well
+#else
+ ld [%g1], %g7 ! Load locked atomic24_t
+ sub %g7, %g2, %g2 ! Subtract argument
+ st %g2, [%g1] ! Store it back
+#endif
+ wr %g3, 0x0, %psr ! Restore original PSR_PIL
+ nop; nop; nop; ! Let the bits set
+ jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
+ mov %g4, %o7 ! Restore %o7
+
+ .globl __atomic_end
+__atomic_end:
+++ /dev/null
-/* checksum.S: Sparc optimized checksum code.
- *
- * Copyright(C) 1995 Linus Torvalds
- * Copyright(C) 1995 Miguel de Icaza
- * Copyright(C) 1996 David S. Miller
- * Copyright(C) 1997 Jakub Jelinek
- *
- * derived from:
- * Linux/Alpha checksum c-code
- * Linux/ix86 inline checksum assembly
- * RFC1071 Computing the Internet Checksum (esp. Jacobsons m68k code)
- * David Mosberger-Tang for optimized reference c-code
- * BSD4.4 portable checksum routine
- */
-
-#include <asm/errno.h>
-
-#define CSUM_BIGCHUNK(buf, offset, sum, t0, t1, t2, t3, t4, t5) \
- ldd [buf + offset + 0x00], t0; \
- ldd [buf + offset + 0x08], t2; \
- addxcc t0, sum, sum; \
- addxcc t1, sum, sum; \
- ldd [buf + offset + 0x10], t4; \
- addxcc t2, sum, sum; \
- addxcc t3, sum, sum; \
- ldd [buf + offset + 0x18], t0; \
- addxcc t4, sum, sum; \
- addxcc t5, sum, sum; \
- addxcc t0, sum, sum; \
- addxcc t1, sum, sum;
-
-#define CSUM_LASTCHUNK(buf, offset, sum, t0, t1, t2, t3) \
- ldd [buf - offset - 0x08], t0; \
- ldd [buf - offset - 0x00], t2; \
- addxcc t0, sum, sum; \
- addxcc t1, sum, sum; \
- addxcc t2, sum, sum; \
- addxcc t3, sum, sum;
-
- /* Do end cruft out of band to get better cache patterns. */
-csum_partial_end_cruft:
- be 1f ! caller asks %o1 & 0x8
- andcc %o1, 4, %g0 ! nope, check for word remaining
- ldd [%o0], %g2 ! load two
- addcc %g2, %o2, %o2 ! add first word to sum
- addxcc %g3, %o2, %o2 ! add second word as well
- add %o0, 8, %o0 ! advance buf ptr
- addx %g0, %o2, %o2 ! add in final carry
- andcc %o1, 4, %g0 ! check again for word remaining
-1: be 1f ! nope, skip this code
- andcc %o1, 3, %o1 ! check for trailing bytes
- ld [%o0], %g2 ! load it
- addcc %g2, %o2, %o2 ! add to sum
- add %o0, 4, %o0 ! advance buf ptr
- addx %g0, %o2, %o2 ! add in final carry
- andcc %o1, 3, %g0 ! check again for trailing bytes
-1: be 1f ! no trailing bytes, return
- addcc %o1, -1, %g0 ! only one byte remains?
- bne 2f ! at least two bytes more
- subcc %o1, 2, %o1 ! only two bytes more?
- b 4f ! only one byte remains
- or %g0, %g0, %o4 ! clear fake hword value
-2: lduh [%o0], %o4 ! get hword
- be 6f ! jmp if only hword remains
- add %o0, 2, %o0 ! advance buf ptr either way
- sll %o4, 16, %o4 ! create upper hword
-4: ldub [%o0], %o5 ! get final byte
- sll %o5, 8, %o5 ! put into place
- or %o5, %o4, %o4 ! coalese with hword (if any)
-6: addcc %o4, %o2, %o2 ! add to sum
-1: retl ! get outta here
- addx %g0, %o2, %o0 ! add final carry into retval
-
- /* Also do alignment out of band to get better cache patterns. */
-csum_partial_fix_alignment:
- cmp %o1, 6
- bl cpte - 0x4
- andcc %o0, 0x2, %g0
- be 1f
- andcc %o0, 0x4, %g0
- lduh [%o0 + 0x00], %g2
- sub %o1, 2, %o1
- add %o0, 2, %o0
- sll %g2, 16, %g2
- addcc %g2, %o2, %o2
- srl %o2, 16, %g3
- addx %g0, %g3, %g2
- sll %o2, 16, %o2
- sll %g2, 16, %g3
- srl %o2, 16, %o2
- andcc %o0, 0x4, %g0
- or %g3, %o2, %o2
-1: be cpa
- andcc %o1, 0xffffff80, %o3
- ld [%o0 + 0x00], %g2
- sub %o1, 4, %o1
- addcc %g2, %o2, %o2
- add %o0, 4, %o0
- addx %g0, %o2, %o2
- b cpa
- andcc %o1, 0xffffff80, %o3
-
- /* The common case is to get called with a nicely aligned
- * buffer of size 0x20. Follow the code path for that case.
- */
- .globl csum_partial
-csum_partial: /* %o0=buf, %o1=len, %o2=sum */
- andcc %o0, 0x7, %g0 ! alignment problems?
- bne csum_partial_fix_alignment ! yep, handle it
- sethi %hi(cpte - 8), %g7 ! prepare table jmp ptr
- andcc %o1, 0xffffff80, %o3 ! num loop iterations
-cpa: be 3f ! none to do
- andcc %o1, 0x70, %g1 ! clears carry flag too
-5: CSUM_BIGCHUNK(%o0, 0x00, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
- CSUM_BIGCHUNK(%o0, 0x20, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
- CSUM_BIGCHUNK(%o0, 0x40, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
- CSUM_BIGCHUNK(%o0, 0x60, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
- addx %g0, %o2, %o2 ! sink in final carry
- subcc %o3, 128, %o3 ! detract from loop iters
- bne 5b ! more to do
- add %o0, 128, %o0 ! advance buf ptr
- andcc %o1, 0x70, %g1 ! clears carry flag too
-3: be cpte ! nope
- andcc %o1, 0xf, %g0 ! anything left at all?
- srl %g1, 1, %o4 ! compute offset
- sub %g7, %g1, %g7 ! adjust jmp ptr
- sub %g7, %o4, %g7 ! final jmp ptr adjust
- jmp %g7 + %lo(cpte - 8) ! enter the table
- add %o0, %g1, %o0 ! advance buf ptr
-cptbl: CSUM_LASTCHUNK(%o0, 0x68, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x58, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x48, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x38, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x28, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x18, %o2, %g2, %g3, %g4, %g5)
- CSUM_LASTCHUNK(%o0, 0x08, %o2, %g2, %g3, %g4, %g5)
- addx %g0, %o2, %o2 ! fetch final carry
- andcc %o1, 0xf, %g0 ! anything left at all?
-cpte: bne csum_partial_end_cruft ! yep, handle it
- andcc %o1, 8, %g0 ! check how much
-cpout: retl ! get outta here
- mov %o2, %o0 ! return computed csum
-
- .globl __csum_partial_copy_start, __csum_partial_copy_end
-__csum_partial_copy_start:
-
-/* Work around cpp -rob */
-#define ALLOC #alloc
-#define EXECINSTR #execinstr
-#define EX(x,y,a,b) \
-98: x,y; \
- .section .fixup,ALLOC,EXECINSTR; \
- .align 4; \
-99: ba 30f; \
- a, b, %o3; \
- .section __ex_table,ALLOC; \
- .align 4; \
- .word 98b, 99b; \
- .text; \
- .align 4
-
-#define EX2(x,y) \
-98: x,y; \
- .section __ex_table,ALLOC; \
- .align 4; \
- .word 98b, 30f; \
- .text; \
- .align 4
-
-#define EX3(x,y) \
-98: x,y; \
- .section __ex_table,ALLOC; \
- .align 4; \
- .word 98b, 96f; \
- .text; \
- .align 4
-
-#define EXT(start,end,handler) \
- .section __ex_table,ALLOC; \
- .align 4; \
- .word start, 0, end, handler; \
- .text; \
- .align 4
-
- /* This aligned version executes typically in 8.5 superscalar cycles, this
- * is the best I can do. I say 8.5 because the final add will pair with
- * the next ldd in the main unrolled loop. Thus the pipe is always full.
- * If you change these macros (including order of instructions),
- * please check the fixup code below as well.
- */
-#define CSUMCOPY_BIGCHUNK_ALIGNED(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
- ldd [src + off + 0x00], t0; \
- ldd [src + off + 0x08], t2; \
- addxcc t0, sum, sum; \
- ldd [src + off + 0x10], t4; \
- addxcc t1, sum, sum; \
- ldd [src + off + 0x18], t6; \
- addxcc t2, sum, sum; \
- std t0, [dst + off + 0x00]; \
- addxcc t3, sum, sum; \
- std t2, [dst + off + 0x08]; \
- addxcc t4, sum, sum; \
- std t4, [dst + off + 0x10]; \
- addxcc t5, sum, sum; \
- std t6, [dst + off + 0x18]; \
- addxcc t6, sum, sum; \
- addxcc t7, sum, sum;
-
- /* 12 superscalar cycles seems to be the limit for this case,
- * because of this we thus do all the ldd's together to get
- * Viking MXCC into streaming mode. Ho hum...
- */
-#define CSUMCOPY_BIGCHUNK(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
- ldd [src + off + 0x00], t0; \
- ldd [src + off + 0x08], t2; \
- ldd [src + off + 0x10], t4; \
- ldd [src + off + 0x18], t6; \
- st t0, [dst + off + 0x00]; \
- addxcc t0, sum, sum; \
- st t1, [dst + off + 0x04]; \
- addxcc t1, sum, sum; \
- st t2, [dst + off + 0x08]; \
- addxcc t2, sum, sum; \
- st t3, [dst + off + 0x0c]; \
- addxcc t3, sum, sum; \
- st t4, [dst + off + 0x10]; \
- addxcc t4, sum, sum; \
- st t5, [dst + off + 0x14]; \
- addxcc t5, sum, sum; \
- st t6, [dst + off + 0x18]; \
- addxcc t6, sum, sum; \
- st t7, [dst + off + 0x1c]; \
- addxcc t7, sum, sum;
-
- /* Yuck, 6 superscalar cycles... */
-#define CSUMCOPY_LASTCHUNK(src, dst, sum, off, t0, t1, t2, t3) \
- ldd [src - off - 0x08], t0; \
- ldd [src - off - 0x00], t2; \
- addxcc t0, sum, sum; \
- st t0, [dst - off - 0x08]; \
- addxcc t1, sum, sum; \
- st t1, [dst - off - 0x04]; \
- addxcc t2, sum, sum; \
- st t2, [dst - off - 0x00]; \
- addxcc t3, sum, sum; \
- st t3, [dst - off + 0x04];
-
- /* Handle the end cruft code out of band for better cache patterns. */
-cc_end_cruft:
- be 1f
- andcc %o3, 4, %g0
- EX(ldd [%o0 + 0x00], %g2, and %o3, 0xf)
- add %o1, 8, %o1
- addcc %g2, %g7, %g7
- add %o0, 8, %o0
- addxcc %g3, %g7, %g7
- EX2(st %g2, [%o1 - 0x08])
- addx %g0, %g7, %g7
- andcc %o3, 4, %g0
- EX2(st %g3, [%o1 - 0x04])
-1: be 1f
- andcc %o3, 3, %o3
- EX(ld [%o0 + 0x00], %g2, add %o3, 4)
- add %o1, 4, %o1
- addcc %g2, %g7, %g7
- EX2(st %g2, [%o1 - 0x04])
- addx %g0, %g7, %g7
- andcc %o3, 3, %g0
- add %o0, 4, %o0
-1: be 1f
- addcc %o3, -1, %g0
- bne 2f
- subcc %o3, 2, %o3
- b 4f
- or %g0, %g0, %o4
-2: EX(lduh [%o0 + 0x00], %o4, add %o3, 2)
- add %o0, 2, %o0
- EX2(sth %o4, [%o1 + 0x00])
- be 6f
- add %o1, 2, %o1
- sll %o4, 16, %o4
-4: EX(ldub [%o0 + 0x00], %o5, add %g0, 1)
- EX2(stb %o5, [%o1 + 0x00])
- sll %o5, 8, %o5
- or %o5, %o4, %o4
-6: addcc %o4, %g7, %g7
-1: retl
- addx %g0, %g7, %o0
-
- /* Also, handle the alignment code out of band. */
-cc_dword_align:
- cmp %g1, 6
- bl,a ccte
- andcc %g1, 0xf, %o3
- andcc %o0, 0x1, %g0
- bne ccslow
- andcc %o0, 0x2, %g0
- be 1f
- andcc %o0, 0x4, %g0
- EX(lduh [%o0 + 0x00], %g4, add %g1, 0)
- sub %g1, 2, %g1
- EX2(sth %g4, [%o1 + 0x00])
- add %o0, 2, %o0
- sll %g4, 16, %g4
- addcc %g4, %g7, %g7
- add %o1, 2, %o1
- srl %g7, 16, %g3
- addx %g0, %g3, %g4
- sll %g7, 16, %g7
- sll %g4, 16, %g3
- srl %g7, 16, %g7
- andcc %o0, 0x4, %g0
- or %g3, %g7, %g7
-1: be 3f
- andcc %g1, 0xffffff80, %g0
- EX(ld [%o0 + 0x00], %g4, add %g1, 0)
- sub %g1, 4, %g1
- EX2(st %g4, [%o1 + 0x00])
- add %o0, 4, %o0
- addcc %g4, %g7, %g7
- add %o1, 4, %o1
- addx %g0, %g7, %g7
- b 3f
- andcc %g1, 0xffffff80, %g0
-
- /* Sun, you just can't beat me, you just can't. Stop trying,
- * give up. I'm serious, I am going to kick the living shit
- * out of you, game over, lights out.
- */
- .align 8
- .globl __csum_partial_copy_sparc_generic
-__csum_partial_copy_sparc_generic:
- /* %o0=src, %o1=dest, %g1=len, %g7=sum */
- xor %o0, %o1, %o4 ! get changing bits
- andcc %o4, 3, %g0 ! check for mismatched alignment
- bne ccslow ! better this than unaligned/fixups
- andcc %o0, 7, %g0 ! need to align things?
- bne cc_dword_align ! yes, we check for short lengths there
- andcc %g1, 0xffffff80, %g0 ! can we use unrolled loop?
-3: be 3f ! nope, less than one loop remains
- andcc %o1, 4, %g0 ! dest aligned on 4 or 8 byte boundary?
- be ccdbl + 4 ! 8 byte aligned, kick ass
-5: CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
-10: EXT(5b, 10b, 20f) ! note for exception handling
- sub %g1, 128, %g1 ! detract from length
- addx %g0, %g7, %g7 ! add in last carry bit
- andcc %g1, 0xffffff80, %g0 ! more to csum?
- add %o0, 128, %o0 ! advance src ptr
- bne 5b ! we did not go negative, continue looping
- add %o1, 128, %o1 ! advance dest ptr
-3: andcc %g1, 0x70, %o2 ! can use table?
-ccmerge:be ccte ! nope, go and check for end cruft
- andcc %g1, 0xf, %o3 ! get low bits of length (clears carry btw)
- srl %o2, 1, %o4 ! begin negative offset computation
- sethi %hi(12f), %o5 ! set up table ptr end
- add %o0, %o2, %o0 ! advance src ptr
- sub %o5, %o4, %o5 ! continue table calculation
- sll %o2, 1, %g2 ! constant multiplies are fun...
- sub %o5, %g2, %o5 ! some more adjustments
- jmp %o5 + %lo(12f) ! jump into it, duff style, wheee...
- add %o1, %o2, %o1 ! advance dest ptr (carry is clear btw)
-cctbl: CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x68,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x58,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x48,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x38,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x28,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x18,%g2,%g3,%g4,%g5)
- CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x08,%g2,%g3,%g4,%g5)
-12: EXT(cctbl, 12b, 22f) ! note for exception table handling
- addx %g0, %g7, %g7
- andcc %o3, 0xf, %g0 ! check for low bits set
-ccte: bne cc_end_cruft ! something left, handle it out of band
- andcc %o3, 8, %g0 ! begin checks for that code
- retl ! return
- mov %g7, %o0 ! give em the computed checksum
-ccdbl: CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
- CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
-11: EXT(ccdbl, 11b, 21f) ! note for exception table handling
- sub %g1, 128, %g1 ! detract from length
- addx %g0, %g7, %g7 ! add in last carry bit
- andcc %g1, 0xffffff80, %g0 ! more to csum?
- add %o0, 128, %o0 ! advance src ptr
- bne ccdbl ! we did not go negative, continue looping
- add %o1, 128, %o1 ! advance dest ptr
- b ccmerge ! finish it off, above
- andcc %g1, 0x70, %o2 ! can use table? (clears carry btw)
-
-ccslow: cmp %g1, 0
- mov 0, %g5
- bleu 4f
- andcc %o0, 1, %o5
- be,a 1f
- srl %g1, 1, %g4
- sub %g1, 1, %g1
- EX(ldub [%o0], %g5, add %g1, 1)
- add %o0, 1, %o0
- EX2(stb %g5, [%o1])
- srl %g1, 1, %g4
- add %o1, 1, %o1
-1: cmp %g4, 0
- be,a 3f
- andcc %g1, 1, %g0
- andcc %o0, 2, %g0
- be,a 1f
- srl %g4, 1, %g4
- EX(lduh [%o0], %o4, add %g1, 0)
- sub %g1, 2, %g1
- srl %o4, 8, %g2
- sub %g4, 1, %g4
- EX2(stb %g2, [%o1])
- add %o4, %g5, %g5
- EX2(stb %o4, [%o1 + 1])
- add %o0, 2, %o0
- srl %g4, 1, %g4
- add %o1, 2, %o1
-1: cmp %g4, 0
- be,a 2f
- andcc %g1, 2, %g0
- EX3(ld [%o0], %o4)
-5: srl %o4, 24, %g2
- srl %o4, 16, %g3
- EX2(stb %g2, [%o1])
- srl %o4, 8, %g2
- EX2(stb %g3, [%o1 + 1])
- add %o0, 4, %o0
- EX2(stb %g2, [%o1 + 2])
- addcc %o4, %g5, %g5
- EX2(stb %o4, [%o1 + 3])
- addx %g5, %g0, %g5 ! I am now to lazy to optimize this (question it
- add %o1, 4, %o1 ! is worthy). Maybe some day - with the sll/srl
- subcc %g4, 1, %g4 ! tricks
- bne,a 5b
- EX3(ld [%o0], %o4)
- sll %g5, 16, %g2
- srl %g5, 16, %g5
- srl %g2, 16, %g2
- andcc %g1, 2, %g0
- add %g2, %g5, %g5
-2: be,a 3f
- andcc %g1, 1, %g0
- EX(lduh [%o0], %o4, and %g1, 3)
- andcc %g1, 1, %g0
- srl %o4, 8, %g2
- add %o0, 2, %o0
- EX2(stb %g2, [%o1])
- add %g5, %o4, %g5
- EX2(stb %o4, [%o1 + 1])
- add %o1, 2, %o1
-3: be,a 1f
- sll %g5, 16, %o4
- EX(ldub [%o0], %g2, add %g0, 1)
- sll %g2, 8, %o4
- EX2(stb %g2, [%o1])
- add %g5, %o4, %g5
- sll %g5, 16, %o4
-1: addcc %o4, %g5, %g5
- srl %g5, 16, %o4
- addx %g0, %o4, %g5
- orcc %o5, %g0, %g0
- be 4f
- srl %g5, 8, %o4
- and %g5, 0xff, %g2
- and %o4, 0xff, %o4
- sll %g2, 8, %g2
- or %g2, %o4, %g5
-4: addcc %g7, %g5, %g7
- retl
- addx %g0, %g7, %o0
-__csum_partial_copy_end:
-
-/* We do these strange calculations for the csum_*_from_user case only, ie.
- * we only bother with faults on loads... */
-
-/* o2 = ((g2%20)&3)*8
- * o3 = g1 - (g2/20)*32 - o2 */
-20:
- cmp %g2, 20
- blu,a 1f
- and %g2, 3, %o2
- sub %g1, 32, %g1
- b 20b
- sub %g2, 20, %g2
-1:
- sll %o2, 3, %o2
- b 31f
- sub %g1, %o2, %o3
-
-/* o2 = (!(g2 & 15) ? 0 : (((g2 & 15) + 1) & ~1)*8)
- * o3 = g1 - (g2/16)*32 - o2 */
-21:
- andcc %g2, 15, %o3
- srl %g2, 4, %g2
- be,a 1f
- clr %o2
- add %o3, 1, %o3
- and %o3, 14, %o3
- sll %o3, 3, %o2
-1:
- sll %g2, 5, %g2
- sub %g1, %g2, %o3
- b 31f
- sub %o3, %o2, %o3
-
-/* o0 += (g2/10)*16 - 0x70
- * 01 += (g2/10)*16 - 0x70
- * o2 = (g2 % 10) ? 8 : 0
- * o3 += 0x70 - (g2/10)*16 - o2 */
-22:
- cmp %g2, 10
- blu,a 1f
- sub %o0, 0x70, %o0
- add %o0, 16, %o0
- add %o1, 16, %o1
- sub %o3, 16, %o3
- b 22b
- sub %g2, 10, %g2
-1:
- sub %o1, 0x70, %o1
- add %o3, 0x70, %o3
- clr %o2
- tst %g2
- bne,a 1f
- mov 8, %o2
-1:
- b 31f
- sub %o3, %o2, %o3
-96:
- and %g1, 3, %g1
- sll %g4, 2, %g4
- add %g1, %g4, %o3
-30:
-/* %o1 is dst
- * %o3 is # bytes to zero out
- * %o4 is faulting address
- * %o5 is %pc where fault occurred */
- clr %o2
-31:
-/* %o0 is src
- * %o1 is dst
- * %o2 is # of bytes to copy from src to dst
- * %o3 is # bytes to zero out
- * %o4 is faulting address
- * %o5 is %pc where fault occurred */
- save %sp, -104, %sp
- mov %i5, %o0
- mov %i7, %o1
- mov %i4, %o2
- call lookup_fault
- mov %g7, %i4
- cmp %o0, 2
- bne 1f
- add %g0, -EFAULT, %i5
- tst %i2
- be 2f
- mov %i0, %o1
- mov %i1, %o0
-5:
- call __memcpy
- mov %i2, %o2
- tst %o0
- bne,a 2f
- add %i3, %i2, %i3
- add %i1, %i2, %i1
-2:
- mov %i1, %o0
-6:
- call __bzero
- mov %i3, %o1
-1:
- ld [%sp + 168], %o2 ! struct_ptr of parent
- st %i5, [%o2]
- ret
- restore
-
- .section __ex_table,#alloc
- .align 4
- .word 5b,2
- .word 6b,2
--- /dev/null
+/* checksum.S: Sparc optimized checksum code.
+ *
+ * Copyright(C) 1995 Linus Torvalds
+ * Copyright(C) 1995 Miguel de Icaza
+ * Copyright(C) 1996 David S. Miller
+ * Copyright(C) 1997 Jakub Jelinek
+ *
+ * derived from:
+ * Linux/Alpha checksum c-code
+ * Linux/ix86 inline checksum assembly
+ * RFC1071 Computing the Internet Checksum (esp. Jacobsons m68k code)
+ * David Mosberger-Tang for optimized reference c-code
+ * BSD4.4 portable checksum routine
+ */
+
+#include <asm/errno.h>
+
+#define CSUM_BIGCHUNK(buf, offset, sum, t0, t1, t2, t3, t4, t5) \
+ ldd [buf + offset + 0x00], t0; \
+ ldd [buf + offset + 0x08], t2; \
+ addxcc t0, sum, sum; \
+ addxcc t1, sum, sum; \
+ ldd [buf + offset + 0x10], t4; \
+ addxcc t2, sum, sum; \
+ addxcc t3, sum, sum; \
+ ldd [buf + offset + 0x18], t0; \
+ addxcc t4, sum, sum; \
+ addxcc t5, sum, sum; \
+ addxcc t0, sum, sum; \
+ addxcc t1, sum, sum;
+
+#define CSUM_LASTCHUNK(buf, offset, sum, t0, t1, t2, t3) \
+ ldd [buf - offset - 0x08], t0; \
+ ldd [buf - offset - 0x00], t2; \
+ addxcc t0, sum, sum; \
+ addxcc t1, sum, sum; \
+ addxcc t2, sum, sum; \
+ addxcc t3, sum, sum;
+
+ /* Do end cruft out of band to get better cache patterns. */
+csum_partial_end_cruft:
+ be 1f ! caller asks %o1 & 0x8
+ andcc %o1, 4, %g0 ! nope, check for word remaining
+ ldd [%o0], %g2 ! load two
+ addcc %g2, %o2, %o2 ! add first word to sum
+ addxcc %g3, %o2, %o2 ! add second word as well
+ add %o0, 8, %o0 ! advance buf ptr
+ addx %g0, %o2, %o2 ! add in final carry
+ andcc %o1, 4, %g0 ! check again for word remaining
+1: be 1f ! nope, skip this code
+ andcc %o1, 3, %o1 ! check for trailing bytes
+ ld [%o0], %g2 ! load it
+ addcc %g2, %o2, %o2 ! add to sum
+ add %o0, 4, %o0 ! advance buf ptr
+ addx %g0, %o2, %o2 ! add in final carry
+ andcc %o1, 3, %g0 ! check again for trailing bytes
+1: be 1f ! no trailing bytes, return
+ addcc %o1, -1, %g0 ! only one byte remains?
+ bne 2f ! at least two bytes more
+ subcc %o1, 2, %o1 ! only two bytes more?
+ b 4f ! only one byte remains
+ or %g0, %g0, %o4 ! clear fake hword value
+2: lduh [%o0], %o4 ! get hword
+ be 6f ! jmp if only hword remains
+ add %o0, 2, %o0 ! advance buf ptr either way
+ sll %o4, 16, %o4 ! create upper hword
+4: ldub [%o0], %o5 ! get final byte
+ sll %o5, 8, %o5 ! put into place
+ or %o5, %o4, %o4 ! coalese with hword (if any)
+6: addcc %o4, %o2, %o2 ! add to sum
+1: retl ! get outta here
+ addx %g0, %o2, %o0 ! add final carry into retval
+
+ /* Also do alignment out of band to get better cache patterns. */
+csum_partial_fix_alignment:
+ cmp %o1, 6
+ bl cpte - 0x4
+ andcc %o0, 0x2, %g0
+ be 1f
+ andcc %o0, 0x4, %g0
+ lduh [%o0 + 0x00], %g2
+ sub %o1, 2, %o1
+ add %o0, 2, %o0
+ sll %g2, 16, %g2
+ addcc %g2, %o2, %o2
+ srl %o2, 16, %g3
+ addx %g0, %g3, %g2
+ sll %o2, 16, %o2
+ sll %g2, 16, %g3
+ srl %o2, 16, %o2
+ andcc %o0, 0x4, %g0
+ or %g3, %o2, %o2
+1: be cpa
+ andcc %o1, 0xffffff80, %o3
+ ld [%o0 + 0x00], %g2
+ sub %o1, 4, %o1
+ addcc %g2, %o2, %o2
+ add %o0, 4, %o0
+ addx %g0, %o2, %o2
+ b cpa
+ andcc %o1, 0xffffff80, %o3
+
+ /* The common case is to get called with a nicely aligned
+ * buffer of size 0x20. Follow the code path for that case.
+ */
+ .globl csum_partial
+csum_partial: /* %o0=buf, %o1=len, %o2=sum */
+ andcc %o0, 0x7, %g0 ! alignment problems?
+ bne csum_partial_fix_alignment ! yep, handle it
+ sethi %hi(cpte - 8), %g7 ! prepare table jmp ptr
+ andcc %o1, 0xffffff80, %o3 ! num loop iterations
+cpa: be 3f ! none to do
+ andcc %o1, 0x70, %g1 ! clears carry flag too
+5: CSUM_BIGCHUNK(%o0, 0x00, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+ CSUM_BIGCHUNK(%o0, 0x20, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+ CSUM_BIGCHUNK(%o0, 0x40, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+ CSUM_BIGCHUNK(%o0, 0x60, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+ addx %g0, %o2, %o2 ! sink in final carry
+ subcc %o3, 128, %o3 ! detract from loop iters
+ bne 5b ! more to do
+ add %o0, 128, %o0 ! advance buf ptr
+ andcc %o1, 0x70, %g1 ! clears carry flag too
+3: be cpte ! nope
+ andcc %o1, 0xf, %g0 ! anything left at all?
+ srl %g1, 1, %o4 ! compute offset
+ sub %g7, %g1, %g7 ! adjust jmp ptr
+ sub %g7, %o4, %g7 ! final jmp ptr adjust
+ jmp %g7 + %lo(cpte - 8) ! enter the table
+ add %o0, %g1, %o0 ! advance buf ptr
+cptbl: CSUM_LASTCHUNK(%o0, 0x68, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x58, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x48, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x38, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x28, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x18, %o2, %g2, %g3, %g4, %g5)
+ CSUM_LASTCHUNK(%o0, 0x08, %o2, %g2, %g3, %g4, %g5)
+ addx %g0, %o2, %o2 ! fetch final carry
+ andcc %o1, 0xf, %g0 ! anything left at all?
+cpte: bne csum_partial_end_cruft ! yep, handle it
+ andcc %o1, 8, %g0 ! check how much
+cpout: retl ! get outta here
+ mov %o2, %o0 ! return computed csum
+
+ .globl __csum_partial_copy_start, __csum_partial_copy_end
+__csum_partial_copy_start:
+
+/* Work around cpp -rob */
+#define ALLOC #alloc
+#define EXECINSTR #execinstr
+#define EX(x,y,a,b) \
+98: x,y; \
+ .section .fixup,ALLOC,EXECINSTR; \
+ .align 4; \
+99: ba 30f; \
+ a, b, %o3; \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word 98b, 99b; \
+ .text; \
+ .align 4
+
+#define EX2(x,y) \
+98: x,y; \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word 98b, 30f; \
+ .text; \
+ .align 4
+
+#define EX3(x,y) \
+98: x,y; \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word 98b, 96f; \
+ .text; \
+ .align 4
+
+#define EXT(start,end,handler) \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word start, 0, end, handler; \
+ .text; \
+ .align 4
+
+ /* This aligned version executes typically in 8.5 superscalar cycles, this
+ * is the best I can do. I say 8.5 because the final add will pair with
+ * the next ldd in the main unrolled loop. Thus the pipe is always full.
+ * If you change these macros (including order of instructions),
+ * please check the fixup code below as well.
+ */
+#define CSUMCOPY_BIGCHUNK_ALIGNED(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
+ ldd [src + off + 0x00], t0; \
+ ldd [src + off + 0x08], t2; \
+ addxcc t0, sum, sum; \
+ ldd [src + off + 0x10], t4; \
+ addxcc t1, sum, sum; \
+ ldd [src + off + 0x18], t6; \
+ addxcc t2, sum, sum; \
+ std t0, [dst + off + 0x00]; \
+ addxcc t3, sum, sum; \
+ std t2, [dst + off + 0x08]; \
+ addxcc t4, sum, sum; \
+ std t4, [dst + off + 0x10]; \
+ addxcc t5, sum, sum; \
+ std t6, [dst + off + 0x18]; \
+ addxcc t6, sum, sum; \
+ addxcc t7, sum, sum;
+
+ /* 12 superscalar cycles seems to be the limit for this case,
+ * because of this we thus do all the ldd's together to get
+ * Viking MXCC into streaming mode. Ho hum...
+ */
+#define CSUMCOPY_BIGCHUNK(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
+ ldd [src + off + 0x00], t0; \
+ ldd [src + off + 0x08], t2; \
+ ldd [src + off + 0x10], t4; \
+ ldd [src + off + 0x18], t6; \
+ st t0, [dst + off + 0x00]; \
+ addxcc t0, sum, sum; \
+ st t1, [dst + off + 0x04]; \
+ addxcc t1, sum, sum; \
+ st t2, [dst + off + 0x08]; \
+ addxcc t2, sum, sum; \
+ st t3, [dst + off + 0x0c]; \
+ addxcc t3, sum, sum; \
+ st t4, [dst + off + 0x10]; \
+ addxcc t4, sum, sum; \
+ st t5, [dst + off + 0x14]; \
+ addxcc t5, sum, sum; \
+ st t6, [dst + off + 0x18]; \
+ addxcc t6, sum, sum; \
+ st t7, [dst + off + 0x1c]; \
+ addxcc t7, sum, sum;
+
+ /* Yuck, 6 superscalar cycles... */
+#define CSUMCOPY_LASTCHUNK(src, dst, sum, off, t0, t1, t2, t3) \
+ ldd [src - off - 0x08], t0; \
+ ldd [src - off - 0x00], t2; \
+ addxcc t0, sum, sum; \
+ st t0, [dst - off - 0x08]; \
+ addxcc t1, sum, sum; \
+ st t1, [dst - off - 0x04]; \
+ addxcc t2, sum, sum; \
+ st t2, [dst - off - 0x00]; \
+ addxcc t3, sum, sum; \
+ st t3, [dst - off + 0x04];
+
+ /* Handle the end cruft code out of band for better cache patterns. */
+cc_end_cruft:
+ be 1f
+ andcc %o3, 4, %g0
+ EX(ldd [%o0 + 0x00], %g2, and %o3, 0xf)
+ add %o1, 8, %o1
+ addcc %g2, %g7, %g7
+ add %o0, 8, %o0
+ addxcc %g3, %g7, %g7
+ EX2(st %g2, [%o1 - 0x08])
+ addx %g0, %g7, %g7
+ andcc %o3, 4, %g0
+ EX2(st %g3, [%o1 - 0x04])
+1: be 1f
+ andcc %o3, 3, %o3
+ EX(ld [%o0 + 0x00], %g2, add %o3, 4)
+ add %o1, 4, %o1
+ addcc %g2, %g7, %g7
+ EX2(st %g2, [%o1 - 0x04])
+ addx %g0, %g7, %g7
+ andcc %o3, 3, %g0
+ add %o0, 4, %o0
+1: be 1f
+ addcc %o3, -1, %g0
+ bne 2f
+ subcc %o3, 2, %o3
+ b 4f
+ or %g0, %g0, %o4
+2: EX(lduh [%o0 + 0x00], %o4, add %o3, 2)
+ add %o0, 2, %o0
+ EX2(sth %o4, [%o1 + 0x00])
+ be 6f
+ add %o1, 2, %o1
+ sll %o4, 16, %o4
+4: EX(ldub [%o0 + 0x00], %o5, add %g0, 1)
+ EX2(stb %o5, [%o1 + 0x00])
+ sll %o5, 8, %o5
+ or %o5, %o4, %o4
+6: addcc %o4, %g7, %g7
+1: retl
+ addx %g0, %g7, %o0
+
+ /* Also, handle the alignment code out of band. */
+cc_dword_align:
+ cmp %g1, 6
+ bl,a ccte
+ andcc %g1, 0xf, %o3
+ andcc %o0, 0x1, %g0
+ bne ccslow
+ andcc %o0, 0x2, %g0
+ be 1f
+ andcc %o0, 0x4, %g0
+ EX(lduh [%o0 + 0x00], %g4, add %g1, 0)
+ sub %g1, 2, %g1
+ EX2(sth %g4, [%o1 + 0x00])
+ add %o0, 2, %o0
+ sll %g4, 16, %g4
+ addcc %g4, %g7, %g7
+ add %o1, 2, %o1
+ srl %g7, 16, %g3
+ addx %g0, %g3, %g4
+ sll %g7, 16, %g7
+ sll %g4, 16, %g3
+ srl %g7, 16, %g7
+ andcc %o0, 0x4, %g0
+ or %g3, %g7, %g7
+1: be 3f
+ andcc %g1, 0xffffff80, %g0
+ EX(ld [%o0 + 0x00], %g4, add %g1, 0)
+ sub %g1, 4, %g1
+ EX2(st %g4, [%o1 + 0x00])
+ add %o0, 4, %o0
+ addcc %g4, %g7, %g7
+ add %o1, 4, %o1
+ addx %g0, %g7, %g7
+ b 3f
+ andcc %g1, 0xffffff80, %g0
+
+ /* Sun, you just can't beat me, you just can't. Stop trying,
+ * give up. I'm serious, I am going to kick the living shit
+ * out of you, game over, lights out.
+ */
+ .align 8
+ .globl __csum_partial_copy_sparc_generic
+__csum_partial_copy_sparc_generic:
+ /* %o0=src, %o1=dest, %g1=len, %g7=sum */
+ xor %o0, %o1, %o4 ! get changing bits
+ andcc %o4, 3, %g0 ! check for mismatched alignment
+ bne ccslow ! better this than unaligned/fixups
+ andcc %o0, 7, %g0 ! need to align things?
+ bne cc_dword_align ! yes, we check for short lengths there
+ andcc %g1, 0xffffff80, %g0 ! can we use unrolled loop?
+3: be 3f ! nope, less than one loop remains
+ andcc %o1, 4, %g0 ! dest aligned on 4 or 8 byte boundary?
+ be ccdbl + 4 ! 8 byte aligned, kick ass
+5: CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+10: EXT(5b, 10b, 20f) ! note for exception handling
+ sub %g1, 128, %g1 ! detract from length
+ addx %g0, %g7, %g7 ! add in last carry bit
+ andcc %g1, 0xffffff80, %g0 ! more to csum?
+ add %o0, 128, %o0 ! advance src ptr
+ bne 5b ! we did not go negative, continue looping
+ add %o1, 128, %o1 ! advance dest ptr
+3: andcc %g1, 0x70, %o2 ! can use table?
+ccmerge:be ccte ! nope, go and check for end cruft
+ andcc %g1, 0xf, %o3 ! get low bits of length (clears carry btw)
+ srl %o2, 1, %o4 ! begin negative offset computation
+ sethi %hi(12f), %o5 ! set up table ptr end
+ add %o0, %o2, %o0 ! advance src ptr
+ sub %o5, %o4, %o5 ! continue table calculation
+ sll %o2, 1, %g2 ! constant multiplies are fun...
+ sub %o5, %g2, %o5 ! some more adjustments
+ jmp %o5 + %lo(12f) ! jump into it, duff style, wheee...
+ add %o1, %o2, %o1 ! advance dest ptr (carry is clear btw)
+cctbl: CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x68,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x58,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x48,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x38,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x28,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x18,%g2,%g3,%g4,%g5)
+ CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x08,%g2,%g3,%g4,%g5)
+12: EXT(cctbl, 12b, 22f) ! note for exception table handling
+ addx %g0, %g7, %g7
+ andcc %o3, 0xf, %g0 ! check for low bits set
+ccte: bne cc_end_cruft ! something left, handle it out of band
+ andcc %o3, 8, %g0 ! begin checks for that code
+ retl ! return
+ mov %g7, %o0 ! give em the computed checksum
+ccdbl: CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+ CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+11: EXT(ccdbl, 11b, 21f) ! note for exception table handling
+ sub %g1, 128, %g1 ! detract from length
+ addx %g0, %g7, %g7 ! add in last carry bit
+ andcc %g1, 0xffffff80, %g0 ! more to csum?
+ add %o0, 128, %o0 ! advance src ptr
+ bne ccdbl ! we did not go negative, continue looping
+ add %o1, 128, %o1 ! advance dest ptr
+ b ccmerge ! finish it off, above
+ andcc %g1, 0x70, %o2 ! can use table? (clears carry btw)
+
+ccslow: cmp %g1, 0
+ mov 0, %g5
+ bleu 4f
+ andcc %o0, 1, %o5
+ be,a 1f
+ srl %g1, 1, %g4
+ sub %g1, 1, %g1
+ EX(ldub [%o0], %g5, add %g1, 1)
+ add %o0, 1, %o0
+ EX2(stb %g5, [%o1])
+ srl %g1, 1, %g4
+ add %o1, 1, %o1
+1: cmp %g4, 0
+ be,a 3f
+ andcc %g1, 1, %g0
+ andcc %o0, 2, %g0
+ be,a 1f
+ srl %g4, 1, %g4
+ EX(lduh [%o0], %o4, add %g1, 0)
+ sub %g1, 2, %g1
+ srl %o4, 8, %g2
+ sub %g4, 1, %g4
+ EX2(stb %g2, [%o1])
+ add %o4, %g5, %g5
+ EX2(stb %o4, [%o1 + 1])
+ add %o0, 2, %o0
+ srl %g4, 1, %g4
+ add %o1, 2, %o1
+1: cmp %g4, 0
+ be,a 2f
+ andcc %g1, 2, %g0
+ EX3(ld [%o0], %o4)
+5: srl %o4, 24, %g2
+ srl %o4, 16, %g3
+ EX2(stb %g2, [%o1])
+ srl %o4, 8, %g2
+ EX2(stb %g3, [%o1 + 1])
+ add %o0, 4, %o0
+ EX2(stb %g2, [%o1 + 2])
+ addcc %o4, %g5, %g5
+ EX2(stb %o4, [%o1 + 3])
+ addx %g5, %g0, %g5 ! I am now to lazy to optimize this (question it
+ add %o1, 4, %o1 ! is worthy). Maybe some day - with the sll/srl
+ subcc %g4, 1, %g4 ! tricks
+ bne,a 5b
+ EX3(ld [%o0], %o4)
+ sll %g5, 16, %g2
+ srl %g5, 16, %g5
+ srl %g2, 16, %g2
+ andcc %g1, 2, %g0
+ add %g2, %g5, %g5
+2: be,a 3f
+ andcc %g1, 1, %g0
+ EX(lduh [%o0], %o4, and %g1, 3)
+ andcc %g1, 1, %g0
+ srl %o4, 8, %g2
+ add %o0, 2, %o0
+ EX2(stb %g2, [%o1])
+ add %g5, %o4, %g5
+ EX2(stb %o4, [%o1 + 1])
+ add %o1, 2, %o1
+3: be,a 1f
+ sll %g5, 16, %o4
+ EX(ldub [%o0], %g2, add %g0, 1)
+ sll %g2, 8, %o4
+ EX2(stb %g2, [%o1])
+ add %g5, %o4, %g5
+ sll %g5, 16, %o4
+1: addcc %o4, %g5, %g5
+ srl %g5, 16, %o4
+ addx %g0, %o4, %g5
+ orcc %o5, %g0, %g0
+ be 4f
+ srl %g5, 8, %o4
+ and %g5, 0xff, %g2
+ and %o4, 0xff, %o4
+ sll %g2, 8, %g2
+ or %g2, %o4, %g5
+4: addcc %g7, %g5, %g7
+ retl
+ addx %g0, %g7, %o0
+__csum_partial_copy_end:
+
+/* We do these strange calculations for the csum_*_from_user case only, ie.
+ * we only bother with faults on loads... */
+
+/* o2 = ((g2%20)&3)*8
+ * o3 = g1 - (g2/20)*32 - o2 */
+20:
+ cmp %g2, 20
+ blu,a 1f
+ and %g2, 3, %o2
+ sub %g1, 32, %g1
+ b 20b
+ sub %g2, 20, %g2
+1:
+ sll %o2, 3, %o2
+ b 31f
+ sub %g1, %o2, %o3
+
+/* o2 = (!(g2 & 15) ? 0 : (((g2 & 15) + 1) & ~1)*8)
+ * o3 = g1 - (g2/16)*32 - o2 */
+21:
+ andcc %g2, 15, %o3
+ srl %g2, 4, %g2
+ be,a 1f
+ clr %o2
+ add %o3, 1, %o3
+ and %o3, 14, %o3
+ sll %o3, 3, %o2
+1:
+ sll %g2, 5, %g2
+ sub %g1, %g2, %o3
+ b 31f
+ sub %o3, %o2, %o3
+
+/* o0 += (g2/10)*16 - 0x70
+ * 01 += (g2/10)*16 - 0x70
+ * o2 = (g2 % 10) ? 8 : 0
+ * o3 += 0x70 - (g2/10)*16 - o2 */
+22:
+ cmp %g2, 10
+ blu,a 1f
+ sub %o0, 0x70, %o0
+ add %o0, 16, %o0
+ add %o1, 16, %o1
+ sub %o3, 16, %o3
+ b 22b
+ sub %g2, 10, %g2
+1:
+ sub %o1, 0x70, %o1
+ add %o3, 0x70, %o3
+ clr %o2
+ tst %g2
+ bne,a 1f
+ mov 8, %o2
+1:
+ b 31f
+ sub %o3, %o2, %o3
+96:
+ and %g1, 3, %g1
+ sll %g4, 2, %g4
+ add %g1, %g4, %o3
+30:
+/* %o1 is dst
+ * %o3 is # bytes to zero out
+ * %o4 is faulting address
+ * %o5 is %pc where fault occurred */
+ clr %o2
+31:
+/* %o0 is src
+ * %o1 is dst
+ * %o2 is # of bytes to copy from src to dst
+ * %o3 is # bytes to zero out
+ * %o4 is faulting address
+ * %o5 is %pc where fault occurred */
+ save %sp, -104, %sp
+ mov %i5, %o0
+ mov %i7, %o1
+ mov %i4, %o2
+ call lookup_fault
+ mov %g7, %i4
+ cmp %o0, 2
+ bne 1f
+ add %g0, -EFAULT, %i5
+ tst %i2
+ be 2f
+ mov %i0, %o1
+ mov %i1, %o0
+5:
+ call __memcpy
+ mov %i2, %o2
+ tst %o0
+ bne,a 2f
+ add %i3, %i2, %i3
+ add %i1, %i2, %i1
+2:
+ mov %i1, %o0
+6:
+ call __bzero
+ mov %i3, %o1
+1:
+ ld [%sp + 168], %o2 ! struct_ptr of parent
+ st %i5, [%o2]
+ ret
+ restore
+
+ .section __ex_table,#alloc
+ .align 4
+ .word 5b,2
+ .word 6b,2
+++ /dev/null
- .text
- .align 4
- .global __memcmp, memcmp
-__memcmp:
-memcmp:
-#if 1
- cmp %o2, 0
- ble L3
- mov 0, %g3
-L5:
- ldub [%o0], %g2
- ldub [%o1], %g3
- sub %g2, %g3, %g2
- mov %g2, %g3
- sll %g2, 24, %g2
-
- cmp %g2, 0
- bne L3
- add %o0, 1, %o0
-
- add %o2, -1, %o2
-
- cmp %o2, 0
- bg L5
- add %o1, 1, %o1
-L3:
- sll %g3, 24, %o0
- sra %o0, 24, %o0
-
- retl
- nop
-#else
- save %sp, -104, %sp
- mov %i2, %o4
- mov %i0, %o0
-
- cmp %o4, 15
- ble L72
- mov %i1, %i2
-
- andcc %i2, 3, %g0
- be L161
- andcc %o0, 3, %g2
-L75:
- ldub [%o0], %g3
- ldub [%i2], %g2
- add %o0,1, %o0
-
- subcc %g3, %g2, %i0
- bne L156
- add %i2, 1, %i2
-
- andcc %i2, 3, %g0
- bne L75
- add %o4, -1, %o4
-
- andcc %o0, 3, %g2
-L161:
- bne,a L78
- mov %i2, %i1
-
- mov %o0, %i5
- mov %i2, %i3
- srl %o4, 2, %i4
-
- cmp %i4, 0
- bge L93
- mov %i4, %g2
-
- add %i4, 3, %g2
-L93:
- sra %g2, 2, %g2
- sll %g2, 2, %g2
- sub %i4, %g2, %g2
-
- cmp %g2, 1
- be,a L88
- add %o0, 4, %i5
-
- bg L94
- cmp %g2, 2
-
- cmp %g2, 0
- be,a L86
- ld [%o0], %g3
-
- b L162
- ld [%i5], %g3
-L94:
- be L81
- cmp %g2, 3
-
- be,a L83
- add %o0, -4, %i5
-
- b L162
- ld [%i5], %g3
-L81:
- add %o0, -8, %i5
- ld [%o0], %g3
- add %i2, -8, %i3
- ld [%i2], %g2
-
- b L82
- add %i4, 2, %i4
-L83:
- ld [%o0], %g4
- add %i2, -4, %i3
- ld [%i2], %g1
-
- b L84
- add %i4, 1, %i4
-L86:
- b L87
- ld [%i2], %g2
-L88:
- add %i2, 4, %i3
- ld [%o0], %g4
- add %i4, -1, %i4
- ld [%i2], %g1
-L95:
- ld [%i5], %g3
-L162:
- cmp %g4, %g1
- be L87
- ld [%i3], %g2
-
- cmp %g4, %g1
-L163:
- bleu L114
- mov -1, %i0
-
- b L114
- mov 1, %i0
-L87:
- ld [%i5 + 4], %g4
- cmp %g3, %g2
- bne L163
- ld [%i3 + 4], %g1
-L84:
- ld [%i5 + 8], %g3
-
- cmp %g4, %g1
- bne L163
- ld [%i3 + 8], %g2
-L82:
- ld [%i5 + 12], %g4
- cmp %g3, %g2
- bne L163
- ld [%i3 + 12], %g1
-
- add %i5, 16, %i5
-
- addcc %i4, -4, %i4
- bne L95
- add %i3, 16, %i3
-
- cmp %g4, %g1
- bne L163
- nop
-
- b L114
- mov 0, %i0
-L78:
- srl %o4, 2, %i0
- and %o0, -4, %i3
- orcc %i0, %g0, %g3
- sll %g2, 3, %o7
- mov 32, %g2
-
- bge L129
- sub %g2, %o7, %o1
-
- add %i0, 3, %g3
-L129:
- sra %g3, 2, %g2
- sll %g2, 2, %g2
- sub %i0, %g2, %g2
-
- cmp %g2, 1
- be,a L124
- ld [%i3], %o3
-
- bg L130
- cmp %g2, 2
-
- cmp %g2, 0
- be,a L122
- ld [%i3], %o2
-
- b L164
- sll %o3, %o7, %g3
-L130:
- be L117
- cmp %g2, 3
-
- be,a L119
- ld [%i3], %g1
-
- b L164
- sll %o3, %o7, %g3
-L117:
- ld [%i3], %g4
- add %i2, -8, %i1
- ld [%i3 + 4], %o3
- add %i0, 2, %i0
- ld [%i2], %i4
-
- b L118
- add %i3, -4, %i3
-L119:
- ld [%i3 + 4], %g4
- add %i2, -4, %i1
- ld [%i2], %i5
-
- b L120
- add %i0, 1, %i0
-L122:
- ld [%i3 + 4], %g1
- ld [%i2], %i4
-
- b L123
- add %i3, 4, %i3
-L124:
- add %i2, 4, %i1
- ld [%i3 + 4], %o2
- add %i0, -1, %i0
- ld [%i2], %i5
- add %i3, 8, %i3
-L131:
- sll %o3, %o7, %g3
-L164:
- srl %o2, %o1, %g2
- ld [%i3], %g1
- or %g3, %g2, %g3
-
- cmp %g3, %i5
- bne L163
- ld [%i1], %i4
-L123:
- sll %o2, %o7, %g3
- srl %g1, %o1, %g2
- ld [%i3 + 4], %g4
- or %g3, %g2, %g3
-
- cmp %g3, %i4
- bne L163
- ld [%i1 + 4], %i5
-L120:
- sll %g1, %o7, %g3
- srl %g4, %o1, %g2
- ld [%i3 + 8], %o3
- or %g3, %g2, %g3
-
- cmp %g3, %i5
- bne L163
- ld [%i1 + 8], %i4
-L118:
- sll %g4, %o7, %g3
- srl %o3, %o1, %g2
- ld [%i3 + 12], %o2
- or %g3, %g2, %g3
-
- cmp %g3, %i4
- bne L163
- ld [%i1 + 12], %i5
-
- add %i3, 16, %i3
- addcc %i0, -4, %i0
- bne L131
- add %i1, 16, %i1
-
- sll %o3, %o7, %g3
- srl %o2, %o1, %g2
- or %g3, %g2, %g3
-
- cmp %g3, %i5
- be,a L114
- mov 0, %i0
-
- b,a L163
-L114:
- cmp %i0, 0
- bne L156
- and %o4, -4, %g2
-
- add %o0, %g2, %o0
- add %i2, %g2, %i2
- and %o4, 3, %o4
-L72:
- cmp %o4, 0
- be L156
- mov 0, %i0
-
- ldub [%o0], %g3
-L165:
- ldub [%i2], %g2
- add %o0, 1, %o0
-
- subcc %g3, %g2, %i0
- bne L156
- add %i2, 1, %i2
-
- addcc %o4, -1, %o4
- bne,a L165
- ldub [%o0], %g3
-
- mov 0, %i0
-L156:
- ret
- restore
-#endif
--- /dev/null
+ .text
+ .align 4
+ .global __memcmp, memcmp
+__memcmp:
+memcmp:
+#if 1
+ cmp %o2, 0
+ ble L3
+ mov 0, %g3
+L5:
+ ldub [%o0], %g2
+ ldub [%o1], %g3
+ sub %g2, %g3, %g2
+ mov %g2, %g3
+ sll %g2, 24, %g2
+
+ cmp %g2, 0
+ bne L3
+ add %o0, 1, %o0
+
+ add %o2, -1, %o2
+
+ cmp %o2, 0
+ bg L5
+ add %o1, 1, %o1
+L3:
+ sll %g3, 24, %o0
+ sra %o0, 24, %o0
+
+ retl
+ nop
+#else
+ save %sp, -104, %sp
+ mov %i2, %o4
+ mov %i0, %o0
+
+ cmp %o4, 15
+ ble L72
+ mov %i1, %i2
+
+ andcc %i2, 3, %g0
+ be L161
+ andcc %o0, 3, %g2
+L75:
+ ldub [%o0], %g3
+ ldub [%i2], %g2
+ add %o0,1, %o0
+
+ subcc %g3, %g2, %i0
+ bne L156
+ add %i2, 1, %i2
+
+ andcc %i2, 3, %g0
+ bne L75
+ add %o4, -1, %o4
+
+ andcc %o0, 3, %g2
+L161:
+ bne,a L78
+ mov %i2, %i1
+
+ mov %o0, %i5
+ mov %i2, %i3
+ srl %o4, 2, %i4
+
+ cmp %i4, 0
+ bge L93
+ mov %i4, %g2
+
+ add %i4, 3, %g2
+L93:
+ sra %g2, 2, %g2
+ sll %g2, 2, %g2
+ sub %i4, %g2, %g2
+
+ cmp %g2, 1
+ be,a L88
+ add %o0, 4, %i5
+
+ bg L94
+ cmp %g2, 2
+
+ cmp %g2, 0
+ be,a L86
+ ld [%o0], %g3
+
+ b L162
+ ld [%i5], %g3
+L94:
+ be L81
+ cmp %g2, 3
+
+ be,a L83
+ add %o0, -4, %i5
+
+ b L162
+ ld [%i5], %g3
+L81:
+ add %o0, -8, %i5
+ ld [%o0], %g3
+ add %i2, -8, %i3
+ ld [%i2], %g2
+
+ b L82
+ add %i4, 2, %i4
+L83:
+ ld [%o0], %g4
+ add %i2, -4, %i3
+ ld [%i2], %g1
+
+ b L84
+ add %i4, 1, %i4
+L86:
+ b L87
+ ld [%i2], %g2
+L88:
+ add %i2, 4, %i3
+ ld [%o0], %g4
+ add %i4, -1, %i4
+ ld [%i2], %g1
+L95:
+ ld [%i5], %g3
+L162:
+ cmp %g4, %g1
+ be L87
+ ld [%i3], %g2
+
+ cmp %g4, %g1
+L163:
+ bleu L114
+ mov -1, %i0
+
+ b L114
+ mov 1, %i0
+L87:
+ ld [%i5 + 4], %g4
+ cmp %g3, %g2
+ bne L163
+ ld [%i3 + 4], %g1
+L84:
+ ld [%i5 + 8], %g3
+
+ cmp %g4, %g1
+ bne L163
+ ld [%i3 + 8], %g2
+L82:
+ ld [%i5 + 12], %g4
+ cmp %g3, %g2
+ bne L163
+ ld [%i3 + 12], %g1
+
+ add %i5, 16, %i5
+
+ addcc %i4, -4, %i4
+ bne L95
+ add %i3, 16, %i3
+
+ cmp %g4, %g1
+ bne L163
+ nop
+
+ b L114
+ mov 0, %i0
+L78:
+ srl %o4, 2, %i0
+ and %o0, -4, %i3
+ orcc %i0, %g0, %g3
+ sll %g2, 3, %o7
+ mov 32, %g2
+
+ bge L129
+ sub %g2, %o7, %o1
+
+ add %i0, 3, %g3
+L129:
+ sra %g3, 2, %g2
+ sll %g2, 2, %g2
+ sub %i0, %g2, %g2
+
+ cmp %g2, 1
+ be,a L124
+ ld [%i3], %o3
+
+ bg L130
+ cmp %g2, 2
+
+ cmp %g2, 0
+ be,a L122
+ ld [%i3], %o2
+
+ b L164
+ sll %o3, %o7, %g3
+L130:
+ be L117
+ cmp %g2, 3
+
+ be,a L119
+ ld [%i3], %g1
+
+ b L164
+ sll %o3, %o7, %g3
+L117:
+ ld [%i3], %g4
+ add %i2, -8, %i1
+ ld [%i3 + 4], %o3
+ add %i0, 2, %i0
+ ld [%i2], %i4
+
+ b L118
+ add %i3, -4, %i3
+L119:
+ ld [%i3 + 4], %g4
+ add %i2, -4, %i1
+ ld [%i2], %i5
+
+ b L120
+ add %i0, 1, %i0
+L122:
+ ld [%i3 + 4], %g1
+ ld [%i2], %i4
+
+ b L123
+ add %i3, 4, %i3
+L124:
+ add %i2, 4, %i1
+ ld [%i3 + 4], %o2
+ add %i0, -1, %i0
+ ld [%i2], %i5
+ add %i3, 8, %i3
+L131:
+ sll %o3, %o7, %g3
+L164:
+ srl %o2, %o1, %g2
+ ld [%i3], %g1
+ or %g3, %g2, %g3
+
+ cmp %g3, %i5
+ bne L163
+ ld [%i1], %i4
+L123:
+ sll %o2, %o7, %g3
+ srl %g1, %o1, %g2
+ ld [%i3 + 4], %g4
+ or %g3, %g2, %g3
+
+ cmp %g3, %i4
+ bne L163
+ ld [%i1 + 4], %i5
+L120:
+ sll %g1, %o7, %g3
+ srl %g4, %o1, %g2
+ ld [%i3 + 8], %o3
+ or %g3, %g2, %g3
+
+ cmp %g3, %i5
+ bne L163
+ ld [%i1 + 8], %i4
+L118:
+ sll %g4, %o7, %g3
+ srl %o3, %o1, %g2
+ ld [%i3 + 12], %o2
+ or %g3, %g2, %g3
+
+ cmp %g3, %i4
+ bne L163
+ ld [%i1 + 12], %i5
+
+ add %i3, 16, %i3
+ addcc %i0, -4, %i0
+ bne L131
+ add %i1, 16, %i1
+
+ sll %o3, %o7, %g3
+ srl %o2, %o1, %g2
+ or %g3, %g2, %g3
+
+ cmp %g3, %i5
+ be,a L114
+ mov 0, %i0
+
+ b,a L163
+L114:
+ cmp %i0, 0
+ bne L156
+ and %o4, -4, %g2
+
+ add %o0, %g2, %o0
+ add %i2, %g2, %i2
+ and %o4, 3, %o4
+L72:
+ cmp %o4, 0
+ be L156
+ mov 0, %i0
+
+ ldub [%o0], %g3
+L165:
+ ldub [%i2], %g2
+ add %o0, 1, %o0
+
+ subcc %g3, %g2, %i0
+ bne L156
+ add %i2, 1, %i2
+
+ addcc %o4, -1, %o4
+ bne,a L165
+ ldub [%o0], %g3
+
+ mov 0, %i0
+L156:
+ ret
+ restore
+#endif
+++ /dev/null
-/*
- * memscan.S: Optimized memscan for the Sparc.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
-
-/* In essence, this is just a fancy strlen. */
-
-#define LO_MAGIC 0x01010101
-#define HI_MAGIC 0x80808080
-
- .text
- .align 4
- .globl __memscan_zero, __memscan_generic
- .globl memscan
-__memscan_zero:
- /* %o0 = addr, %o1 = size */
- cmp %o1, 0
- bne,a 1f
- andcc %o0, 3, %g0
-
- retl
- nop
-
-1:
- be mzero_scan_word
- sethi %hi(HI_MAGIC), %g2
-
- ldsb [%o0], %g3
-mzero_still_not_word_aligned:
- cmp %g3, 0
- bne 1f
- add %o0, 1, %o0
-
- retl
- sub %o0, 1, %o0
-
-1:
- subcc %o1, 1, %o1
- bne,a 1f
- andcc %o0, 3, %g0
-
- retl
- nop
-
-1:
- bne,a mzero_still_not_word_aligned
- ldsb [%o0], %g3
-
- sethi %hi(HI_MAGIC), %g2
-mzero_scan_word:
- or %g2, %lo(HI_MAGIC), %o3
- sethi %hi(LO_MAGIC), %g3
- or %g3, %lo(LO_MAGIC), %o2
-mzero_next_word:
- ld [%o0], %g2
-mzero_next_word_preloaded:
- sub %g2, %o2, %g2
-mzero_next_word_preloaded_next:
- andcc %g2, %o3, %g0
- bne mzero_byte_zero
- add %o0, 4, %o0
-
-mzero_check_out_of_fuel:
- subcc %o1, 4, %o1
- bg,a 1f
- ld [%o0], %g2
-
- retl
- nop
-
-1:
- b mzero_next_word_preloaded_next
- sub %g2, %o2, %g2
-
- /* Check every byte. */
-mzero_byte_zero:
- ldsb [%o0 - 4], %g2
- cmp %g2, 0
- bne mzero_byte_one
- sub %o0, 4, %g3
-
- retl
- mov %g3, %o0
-
-mzero_byte_one:
- ldsb [%o0 - 3], %g2
- cmp %g2, 0
- bne,a mzero_byte_two_and_three
- ldsb [%o0 - 2], %g2
-
- retl
- sub %o0, 3, %o0
-
-mzero_byte_two_and_three:
- cmp %g2, 0
- bne,a 1f
- ldsb [%o0 - 1], %g2
-
- retl
- sub %o0, 2, %o0
-
-1:
- cmp %g2, 0
- bne,a mzero_next_word_preloaded
- ld [%o0], %g2
-
- retl
- sub %o0, 1, %o0
-
-mzero_found_it:
- retl
- sub %o0, 2, %o0
-
-memscan:
-__memscan_generic:
- /* %o0 = addr, %o1 = c, %o2 = size */
- cmp %o2, 0
- bne,a 0f
- ldub [%o0], %g2
-
- b,a 2f
-1:
- ldub [%o0], %g2
-0:
- cmp %g2, %o1
- be 2f
- addcc %o2, -1, %o2
- bne 1b
- add %o0, 1, %o0
-2:
- retl
- nop
--- /dev/null
+/*
+ * memscan.S: Optimized memscan for the Sparc.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+/* In essence, this is just a fancy strlen. */
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+ .text
+ .align 4
+ .globl __memscan_zero, __memscan_generic
+ .globl memscan
+__memscan_zero:
+ /* %o0 = addr, %o1 = size */
+ cmp %o1, 0
+ bne,a 1f
+ andcc %o0, 3, %g0
+
+ retl
+ nop
+
+1:
+ be mzero_scan_word
+ sethi %hi(HI_MAGIC), %g2
+
+ ldsb [%o0], %g3
+mzero_still_not_word_aligned:
+ cmp %g3, 0
+ bne 1f
+ add %o0, 1, %o0
+
+ retl
+ sub %o0, 1, %o0
+
+1:
+ subcc %o1, 1, %o1
+ bne,a 1f
+ andcc %o0, 3, %g0
+
+ retl
+ nop
+
+1:
+ bne,a mzero_still_not_word_aligned
+ ldsb [%o0], %g3
+
+ sethi %hi(HI_MAGIC), %g2
+mzero_scan_word:
+ or %g2, %lo(HI_MAGIC), %o3
+ sethi %hi(LO_MAGIC), %g3
+ or %g3, %lo(LO_MAGIC), %o2
+mzero_next_word:
+ ld [%o0], %g2
+mzero_next_word_preloaded:
+ sub %g2, %o2, %g2
+mzero_next_word_preloaded_next:
+ andcc %g2, %o3, %g0
+ bne mzero_byte_zero
+ add %o0, 4, %o0
+
+mzero_check_out_of_fuel:
+ subcc %o1, 4, %o1
+ bg,a 1f
+ ld [%o0], %g2
+
+ retl
+ nop
+
+1:
+ b mzero_next_word_preloaded_next
+ sub %g2, %o2, %g2
+
+ /* Check every byte. */
+mzero_byte_zero:
+ ldsb [%o0 - 4], %g2
+ cmp %g2, 0
+ bne mzero_byte_one
+ sub %o0, 4, %g3
+
+ retl
+ mov %g3, %o0
+
+mzero_byte_one:
+ ldsb [%o0 - 3], %g2
+ cmp %g2, 0
+ bne,a mzero_byte_two_and_three
+ ldsb [%o0 - 2], %g2
+
+ retl
+ sub %o0, 3, %o0
+
+mzero_byte_two_and_three:
+ cmp %g2, 0
+ bne,a 1f
+ ldsb [%o0 - 1], %g2
+
+ retl
+ sub %o0, 2, %o0
+
+1:
+ cmp %g2, 0
+ bne,a mzero_next_word_preloaded
+ ld [%o0], %g2
+
+ retl
+ sub %o0, 1, %o0
+
+mzero_found_it:
+ retl
+ sub %o0, 2, %o0
+
+memscan:
+__memscan_generic:
+ /* %o0 = addr, %o1 = c, %o2 = size */
+ cmp %o2, 0
+ bne,a 0f
+ ldub [%o0], %g2
+
+ b,a 2f
+1:
+ ldub [%o0], %g2
+0:
+ cmp %g2, %o1
+ be 2f
+ addcc %o2, -1, %o2
+ bne 1b
+ add %o0, 1, %o0
+2:
+ retl
+ nop
+++ /dev/null
-/*
- * Assembly part of rw semaphores.
- *
- * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
- */
-
-#include <asm/ptrace.h>
-#include <asm/psr.h>
-
- .section .sched.text, "ax"
- .align 4
-
- .globl ___down_read
-___down_read:
- rd %psr, %g3
- nop
- nop
- nop
- or %g3, PSR_PIL, %g7
- wr %g7, 0, %psr
- nop
- nop
- nop
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 4], %g7
- tst %g7
- bne 1b
- ld [%g1], %g7
- sub %g7, 1, %g7
- st %g7, [%g1]
- stb %g0, [%g1 + 4]
-#else
- ld [%g1], %g7
- sub %g7, 1, %g7
- st %g7, [%g1]
-#endif
- wr %g3, 0, %psr
- add %g7, 1, %g7
- nop
- nop
- subcc %g7, 1, %g7
- bneg 3f
- nop
-2: jmpl %o7, %g0
- mov %g4, %o7
-3: save %sp, -64, %sp
- mov %g1, %l1
- mov %g4, %l4
- bcs 4f
- mov %g5, %l5
- call down_read_failed
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba ___down_read
- restore %l5, %g0, %g5
-4: call down_read_failed_biased
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba 2b
- restore %l5, %g0, %g5
-
- .globl ___down_write
-___down_write:
- rd %psr, %g3
- nop
- nop
- nop
- or %g3, PSR_PIL, %g7
- wr %g7, 0, %psr
- sethi %hi(0x01000000), %g2
- nop
- nop
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 4], %g7
- tst %g7
- bne 1b
- ld [%g1], %g7
- sub %g7, %g2, %g7
- st %g7, [%g1]
- stb %g0, [%g1 + 4]
-#else
- ld [%g1], %g7
- sub %g7, %g2, %g7
- st %g7, [%g1]
-#endif
- wr %g3, 0, %psr
- add %g7, %g2, %g7
- nop
- nop
- subcc %g7, %g2, %g7
- bne 3f
- nop
-2: jmpl %o7, %g0
- mov %g4, %o7
-3: save %sp, -64, %sp
- mov %g1, %l1
- mov %g4, %l4
- bcs 4f
- mov %g5, %l5
- call down_write_failed
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba ___down_write
- restore %l5, %g0, %g5
-4: call down_write_failed_biased
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba 2b
- restore %l5, %g0, %g5
-
- .text
- .globl ___up_read
-___up_read:
- rd %psr, %g3
- nop
- nop
- nop
- or %g3, PSR_PIL, %g7
- wr %g7, 0, %psr
- nop
- nop
- nop
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 4], %g7
- tst %g7
- bne 1b
- ld [%g1], %g7
- add %g7, 1, %g7
- st %g7, [%g1]
- stb %g0, [%g1 + 4]
-#else
- ld [%g1], %g7
- add %g7, 1, %g7
- st %g7, [%g1]
-#endif
- wr %g3, 0, %psr
- nop
- nop
- nop
- cmp %g7, 0
- be 3f
- nop
-2: jmpl %o7, %g0
- mov %g4, %o7
-3: save %sp, -64, %sp
- mov %g1, %l1
- mov %g4, %l4
- mov %g5, %l5
- clr %o1
- call __rwsem_wake
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba 2b
- restore %l5, %g0, %g5
-
- .globl ___up_write
-___up_write:
- rd %psr, %g3
- nop
- nop
- nop
- or %g3, PSR_PIL, %g7
- wr %g7, 0, %psr
- sethi %hi(0x01000000), %g2
- nop
- nop
-#ifdef CONFIG_SMP
-1: ldstub [%g1 + 4], %g7
- tst %g7
- bne 1b
- ld [%g1], %g7
- add %g7, %g2, %g7
- st %g7, [%g1]
- stb %g0, [%g1 + 4]
-#else
- ld [%g1], %g7
- add %g7, %g2, %g7
- st %g7, [%g1]
-#endif
- wr %g3, 0, %psr
- sub %g7, %g2, %g7
- nop
- nop
- addcc %g7, %g2, %g7
- bcs 3f
- nop
-2: jmpl %o7, %g0
- mov %g4, %o7
-3: save %sp, -64, %sp
- mov %g1, %l1
- mov %g4, %l4
- mov %g5, %l5
- mov %g7, %o1
- call __rwsem_wake
- mov %l1, %o0
- mov %l1, %g1
- mov %l4, %g4
- ba 2b
- restore %l5, %g0, %g5
--- /dev/null
+/*
+ * Assembly part of rw semaphores.
+ *
+ * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
+ */
+
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+
+ .section .sched.text, "ax"
+ .align 4
+
+ .globl ___down_read
+___down_read:
+ rd %psr, %g3
+ nop
+ nop
+ nop
+ or %g3, PSR_PIL, %g7
+ wr %g7, 0, %psr
+ nop
+ nop
+ nop
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 4], %g7
+ tst %g7
+ bne 1b
+ ld [%g1], %g7
+ sub %g7, 1, %g7
+ st %g7, [%g1]
+ stb %g0, [%g1 + 4]
+#else
+ ld [%g1], %g7
+ sub %g7, 1, %g7
+ st %g7, [%g1]
+#endif
+ wr %g3, 0, %psr
+ add %g7, 1, %g7
+ nop
+ nop
+ subcc %g7, 1, %g7
+ bneg 3f
+ nop
+2: jmpl %o7, %g0
+ mov %g4, %o7
+3: save %sp, -64, %sp
+ mov %g1, %l1
+ mov %g4, %l4
+ bcs 4f
+ mov %g5, %l5
+ call down_read_failed
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba ___down_read
+ restore %l5, %g0, %g5
+4: call down_read_failed_biased
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba 2b
+ restore %l5, %g0, %g5
+
+ .globl ___down_write
+___down_write:
+ rd %psr, %g3
+ nop
+ nop
+ nop
+ or %g3, PSR_PIL, %g7
+ wr %g7, 0, %psr
+ sethi %hi(0x01000000), %g2
+ nop
+ nop
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 4], %g7
+ tst %g7
+ bne 1b
+ ld [%g1], %g7
+ sub %g7, %g2, %g7
+ st %g7, [%g1]
+ stb %g0, [%g1 + 4]
+#else
+ ld [%g1], %g7
+ sub %g7, %g2, %g7
+ st %g7, [%g1]
+#endif
+ wr %g3, 0, %psr
+ add %g7, %g2, %g7
+ nop
+ nop
+ subcc %g7, %g2, %g7
+ bne 3f
+ nop
+2: jmpl %o7, %g0
+ mov %g4, %o7
+3: save %sp, -64, %sp
+ mov %g1, %l1
+ mov %g4, %l4
+ bcs 4f
+ mov %g5, %l5
+ call down_write_failed
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba ___down_write
+ restore %l5, %g0, %g5
+4: call down_write_failed_biased
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba 2b
+ restore %l5, %g0, %g5
+
+ .text
+ .globl ___up_read
+___up_read:
+ rd %psr, %g3
+ nop
+ nop
+ nop
+ or %g3, PSR_PIL, %g7
+ wr %g7, 0, %psr
+ nop
+ nop
+ nop
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 4], %g7
+ tst %g7
+ bne 1b
+ ld [%g1], %g7
+ add %g7, 1, %g7
+ st %g7, [%g1]
+ stb %g0, [%g1 + 4]
+#else
+ ld [%g1], %g7
+ add %g7, 1, %g7
+ st %g7, [%g1]
+#endif
+ wr %g3, 0, %psr
+ nop
+ nop
+ nop
+ cmp %g7, 0
+ be 3f
+ nop
+2: jmpl %o7, %g0
+ mov %g4, %o7
+3: save %sp, -64, %sp
+ mov %g1, %l1
+ mov %g4, %l4
+ mov %g5, %l5
+ clr %o1
+ call __rwsem_wake
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba 2b
+ restore %l5, %g0, %g5
+
+ .globl ___up_write
+___up_write:
+ rd %psr, %g3
+ nop
+ nop
+ nop
+ or %g3, PSR_PIL, %g7
+ wr %g7, 0, %psr
+ sethi %hi(0x01000000), %g2
+ nop
+ nop
+#ifdef CONFIG_SMP
+1: ldstub [%g1 + 4], %g7
+ tst %g7
+ bne 1b
+ ld [%g1], %g7
+ add %g7, %g2, %g7
+ st %g7, [%g1]
+ stb %g0, [%g1 + 4]
+#else
+ ld [%g1], %g7
+ add %g7, %g2, %g7
+ st %g7, [%g1]
+#endif
+ wr %g3, 0, %psr
+ sub %g7, %g2, %g7
+ nop
+ nop
+ addcc %g7, %g2, %g7
+ bcs 3f
+ nop
+2: jmpl %o7, %g0
+ mov %g4, %o7
+3: save %sp, -64, %sp
+ mov %g1, %l1
+ mov %g4, %l4
+ mov %g5, %l5
+ mov %g7, %o1
+ call __rwsem_wake
+ mov %l1, %o0
+ mov %l1, %g1
+ mov %l4, %g4
+ ba 2b
+ restore %l5, %g0, %g5
+++ /dev/null
-/* strlen.S: Sparc optimized strlen code
- * Hand optimized from GNU libc's strlen
- * Copyright (C) 1991,1996 Free Software Foundation
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#define LO_MAGIC 0x01010101
-#define HI_MAGIC 0x80808080
-
-0:
- ldub [%o0], %o5
- cmp %o5, 0
- be 1f
- add %o0, 1, %o0
- andcc %o0, 3, %g0
- be 4f
- or %o4, %lo(HI_MAGIC), %o3
- ldub [%o0], %o5
- cmp %o5, 0
- be 2f
- add %o0, 1, %o0
- andcc %o0, 3, %g0
- be 5f
- sethi %hi(LO_MAGIC), %o4
- ldub [%o0], %o5
- cmp %o5, 0
- be 3f
- add %o0, 1, %o0
- b 8f
- or %o4, %lo(LO_MAGIC), %o2
-1:
- retl
- mov 0, %o0
-2:
- retl
- mov 1, %o0
-3:
- retl
- mov 2, %o0
-
- .align 4
- .global strlen
-strlen:
- mov %o0, %o1
- andcc %o0, 3, %g0
- bne 0b
- sethi %hi(HI_MAGIC), %o4
- or %o4, %lo(HI_MAGIC), %o3
-4:
- sethi %hi(LO_MAGIC), %o4
-5:
- or %o4, %lo(LO_MAGIC), %o2
-8:
- ld [%o0], %o5
-2:
- sub %o5, %o2, %o4
- andcc %o4, %o3, %g0
- be 8b
- add %o0, 4, %o0
-
- /* Check every byte. */
- srl %o5, 24, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o0, -4, %o4
- srl %o5, 16, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o4, 1, %o4
- srl %o5, 8, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o4, 1, %o4
- andcc %o5, 0xff, %g0
- bne,a 2b
- ld [%o0], %o5
- add %o4, 1, %o4
-1:
- retl
- sub %o4, %o1, %o0
--- /dev/null
+/* strlen.S: Sparc optimized strlen code
+ * Hand optimized from GNU libc's strlen
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+0:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 1f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 4f
+ or %o4, %lo(HI_MAGIC), %o3
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 2f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 5f
+ sethi %hi(LO_MAGIC), %o4
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 3f
+ add %o0, 1, %o0
+ b 8f
+ or %o4, %lo(LO_MAGIC), %o2
+1:
+ retl
+ mov 0, %o0
+2:
+ retl
+ mov 1, %o0
+3:
+ retl
+ mov 2, %o0
+
+ .align 4
+ .global strlen
+strlen:
+ mov %o0, %o1
+ andcc %o0, 3, %g0
+ bne 0b
+ sethi %hi(HI_MAGIC), %o4
+ or %o4, %lo(HI_MAGIC), %o3
+4:
+ sethi %hi(LO_MAGIC), %o4
+5:
+ or %o4, %lo(LO_MAGIC), %o2
+8:
+ ld [%o0], %o5
+2:
+ sub %o5, %o2, %o4
+ andcc %o4, %o3, %g0
+ be 8b
+ add %o0, 4, %o0
+
+ /* Check every byte. */
+ srl %o5, 24, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o0, -4, %o4
+ srl %o5, 16, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o4, 1, %o4
+ srl %o5, 8, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o4, 1, %o4
+ andcc %o5, 0xff, %g0
+ bne,a 2b
+ ld [%o0], %o5
+ add %o4, 1, %o4
+1:
+ retl
+ sub %o4, %o1, %o0
+++ /dev/null
-/* strlen_user.S: Sparc optimized strlen_user code
- *
- * Return length of string in userspace including terminating 0
- * or 0 for error
- *
- * Copyright (C) 1991,1996 Free Software Foundation
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#define LO_MAGIC 0x01010101
-#define HI_MAGIC 0x80808080
-
-10:
- ldub [%o0], %o5
- cmp %o5, 0
- be 1f
- add %o0, 1, %o0
- andcc %o0, 3, %g0
- be 4f
- or %o4, %lo(HI_MAGIC), %o3
-11:
- ldub [%o0], %o5
- cmp %o5, 0
- be 2f
- add %o0, 1, %o0
- andcc %o0, 3, %g0
- be 5f
- sethi %hi(LO_MAGIC), %o4
-12:
- ldub [%o0], %o5
- cmp %o5, 0
- be 3f
- add %o0, 1, %o0
- b 13f
- or %o4, %lo(LO_MAGIC), %o2
-1:
- retl
- mov 1, %o0
-2:
- retl
- mov 2, %o0
-3:
- retl
- mov 3, %o0
-
- .align 4
- .global __strlen_user, __strnlen_user
-__strlen_user:
- sethi %hi(32768), %o1
-__strnlen_user:
- mov %o1, %g1
- mov %o0, %o1
- andcc %o0, 3, %g0
- bne 10b
- sethi %hi(HI_MAGIC), %o4
- or %o4, %lo(HI_MAGIC), %o3
-4:
- sethi %hi(LO_MAGIC), %o4
-5:
- or %o4, %lo(LO_MAGIC), %o2
-13:
- ld [%o0], %o5
-2:
- sub %o5, %o2, %o4
- andcc %o4, %o3, %g0
- bne 82f
- add %o0, 4, %o0
- sub %o0, %o1, %g2
-81: cmp %g2, %g1
- blu 13b
- mov %o0, %o4
- ba,a 1f
-
- /* Check every byte. */
-82: srl %o5, 24, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o0, -3, %o4
- srl %o5, 16, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o4, 1, %o4
- srl %o5, 8, %g5
- andcc %g5, 0xff, %g0
- be 1f
- add %o4, 1, %o4
- andcc %o5, 0xff, %g0
- bne 81b
- sub %o0, %o1, %g2
-
- add %o4, 1, %o4
-1:
- retl
- sub %o4, %o1, %o0
-
- .section .fixup,#alloc,#execinstr
- .align 4
-9:
- retl
- clr %o0
-
- .section __ex_table,#alloc
- .align 4
-
- .word 10b, 9b
- .word 11b, 9b
- .word 12b, 9b
- .word 13b, 9b
--- /dev/null
+/* strlen_user.S: Sparc optimized strlen_user code
+ *
+ * Return length of string in userspace including terminating 0
+ * or 0 for error
+ *
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+10:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 1f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 4f
+ or %o4, %lo(HI_MAGIC), %o3
+11:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 2f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 5f
+ sethi %hi(LO_MAGIC), %o4
+12:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 3f
+ add %o0, 1, %o0
+ b 13f
+ or %o4, %lo(LO_MAGIC), %o2
+1:
+ retl
+ mov 1, %o0
+2:
+ retl
+ mov 2, %o0
+3:
+ retl
+ mov 3, %o0
+
+ .align 4
+ .global __strlen_user, __strnlen_user
+__strlen_user:
+ sethi %hi(32768), %o1
+__strnlen_user:
+ mov %o1, %g1
+ mov %o0, %o1
+ andcc %o0, 3, %g0
+ bne 10b
+ sethi %hi(HI_MAGIC), %o4
+ or %o4, %lo(HI_MAGIC), %o3
+4:
+ sethi %hi(LO_MAGIC), %o4
+5:
+ or %o4, %lo(LO_MAGIC), %o2
+13:
+ ld [%o0], %o5
+2:
+ sub %o5, %o2, %o4
+ andcc %o4, %o3, %g0
+ bne 82f
+ add %o0, 4, %o0
+ sub %o0, %o1, %g2
+81: cmp %g2, %g1
+ blu 13b
+ mov %o0, %o4
+ ba,a 1f
+
+ /* Check every byte. */
+82: srl %o5, 24, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o0, -3, %o4
+ srl %o5, 16, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o4, 1, %o4
+ srl %o5, 8, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o4, 1, %o4
+ andcc %o5, 0xff, %g0
+ bne 81b
+ sub %o0, %o1, %g2
+
+ add %o4, 1, %o4
+1:
+ retl
+ sub %o4, %o1, %o0
+
+ .section .fixup,#alloc,#execinstr
+ .align 4
+9:
+ retl
+ clr %o0
+
+ .section __ex_table,#alloc
+ .align 4
+
+ .word 10b, 9b
+ .word 11b, 9b
+ .word 12b, 9b
+ .word 13b, 9b
+++ /dev/null
-/*
- * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
- * generic strncmp routine.
- */
-
- .text
- .align 4
- .global __strncmp, strncmp
-__strncmp:
-strncmp:
- mov %o0, %g3
- mov 0, %o3
-
- cmp %o2, 3
- ble 7f
- mov 0, %g2
-
- sra %o2, 2, %o4
- ldub [%g3], %o3
-
-0:
- ldub [%o1], %g2
- add %g3, 1, %g3
- and %o3, 0xff, %o0
-
- cmp %o0, 0
- be 8f
- add %o1, 1, %o1
-
- cmp %o0, %g2
- be,a 1f
- ldub [%g3], %o3
-
- retl
- sub %o0, %g2, %o0
-
-1:
- ldub [%o1], %g2
- add %g3,1, %g3
- and %o3, 0xff, %o0
-
- cmp %o0, 0
- be 8f
- add %o1, 1, %o1
-
- cmp %o0, %g2
- be,a 1f
- ldub [%g3], %o3
-
- retl
- sub %o0, %g2, %o0
-
-1:
- ldub [%o1], %g2
- add %g3, 1, %g3
- and %o3, 0xff, %o0
-
- cmp %o0, 0
- be 8f
- add %o1, 1, %o1
-
- cmp %o0, %g2
- be,a 1f
- ldub [%g3], %o3
-
- retl
- sub %o0, %g2, %o0
-
-1:
- ldub [%o1], %g2
- add %g3, 1, %g3
- and %o3, 0xff, %o0
-
- cmp %o0, 0
- be 8f
- add %o1, 1, %o1
-
- cmp %o0, %g2
- be 1f
- add %o4, -1, %o4
-
- retl
- sub %o0, %g2, %o0
-
-1:
-
- cmp %o4, 0
- bg,a 0b
- ldub [%g3], %o3
-
- b 7f
- and %o2, 3, %o2
-
-9:
- ldub [%o1], %g2
- add %g3, 1, %g3
- and %o3, 0xff, %o0
-
- cmp %o0, 0
- be 8f
- add %o1, 1, %o1
-
- cmp %o0, %g2
- be 7f
- add %o2, -1, %o2
-
-8:
- retl
- sub %o0, %g2, %o0
-
-7:
- cmp %o2, 0
- bg,a 9b
- ldub [%g3], %o3
-
- and %g2, 0xff, %o0
- retl
- sub %o3, %o0, %o0
--- /dev/null
+/*
+ * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
+ * generic strncmp routine.
+ */
+
+ .text
+ .align 4
+ .global __strncmp, strncmp
+__strncmp:
+strncmp:
+ mov %o0, %g3
+ mov 0, %o3
+
+ cmp %o2, 3
+ ble 7f
+ mov 0, %g2
+
+ sra %o2, 2, %o4
+ ldub [%g3], %o3
+
+0:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3,1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be 1f
+ add %o4, -1, %o4
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+
+ cmp %o4, 0
+ bg,a 0b
+ ldub [%g3], %o3
+
+ b 7f
+ and %o2, 3, %o2
+
+9:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be 7f
+ add %o2, -1, %o2
+
+8:
+ retl
+ sub %o0, %g2, %o0
+
+7:
+ cmp %o2, 0
+ bg,a 9b
+ ldub [%g3], %o3
+
+ and %g2, 0xff, %o0
+ retl
+ sub %o3, %o0, %o0
+++ /dev/null
-/* strncpy_from_user.S: Sparc strncpy from userspace.
- *
- * Copyright(C) 1996 David S. Miller
- */
-
-#include <asm/ptrace.h>
-#include <asm/errno.h>
-
- .text
- .align 4
-
- /* Must return:
- *
- * -EFAULT for an exception
- * count if we hit the buffer limit
- * bytes copied if we hit a null byte
- */
-
- .globl __strncpy_from_user
-__strncpy_from_user:
- /* %o0=dest, %o1=src, %o2=count */
- mov %o2, %o3
-1:
- subcc %o2, 1, %o2
- bneg 2f
- nop
-10:
- ldub [%o1], %o4
- add %o0, 1, %o0
- cmp %o4, 0
- add %o1, 1, %o1
- bne 1b
- stb %o4, [%o0 - 1]
-2:
- add %o2, 1, %o0
- retl
- sub %o3, %o0, %o0
-
- .section .fixup,#alloc,#execinstr
- .align 4
-4:
- retl
- mov -EFAULT, %o0
-
- .section __ex_table,#alloc
- .align 4
- .word 10b, 4b
--- /dev/null
+/* strncpy_from_user.S: Sparc strncpy from userspace.
+ *
+ * Copyright(C) 1996 David S. Miller
+ */
+
+#include <asm/ptrace.h>
+#include <asm/errno.h>
+
+ .text
+ .align 4
+
+ /* Must return:
+ *
+ * -EFAULT for an exception
+ * count if we hit the buffer limit
+ * bytes copied if we hit a null byte
+ */
+
+ .globl __strncpy_from_user
+__strncpy_from_user:
+ /* %o0=dest, %o1=src, %o2=count */
+ mov %o2, %o3
+1:
+ subcc %o2, 1, %o2
+ bneg 2f
+ nop
+10:
+ ldub [%o1], %o4
+ add %o0, 1, %o0
+ cmp %o4, 0
+ add %o1, 1, %o1
+ bne 1b
+ stb %o4, [%o0 - 1]
+2:
+ add %o2, 1, %o0
+ retl
+ sub %o3, %o0, %o0
+
+ .section .fixup,#alloc,#execinstr
+ .align 4
+4:
+ retl
+ mov -EFAULT, %o0
+
+ .section __ex_table,#alloc
+ .align 4
+ .word 10b, 4b
projects / openwrt / staging / blogic.git / commitdiff