Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/sparc64/lib/bzero.S b/arch/sparc64/lib/bzero.S
new file mode 100644
index 0000000..21a933f
--- /dev/null
+++ b/arch/sparc64/lib/bzero.S
@@ -0,0 +1,158 @@
+/* bzero.S: Simple prefetching memset, bzero, and clear_user
+ * implementations.
+ *
+ * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
+ */
+
+ .text
+
+ .globl __memset
+ .type __memset, #function
+__memset: /* %o0=buf, %o1=pat, %o2=len */
+
+ .globl memset
+ .type memset, #function
+memset: /* %o0=buf, %o1=pat, %o2=len */
+ and %o1, 0xff, %o3
+ mov %o2, %o1
+ sllx %o3, 8, %g1
+ or %g1, %o3, %o2
+ sllx %o2, 16, %g1
+ or %g1, %o2, %o2
+ sllx %o2, 32, %g1
+ ba,pt %xcc, 1f
+ or %g1, %o2, %o2
+
+ .globl __bzero
+ .type __bzero, #function
+__bzero: /* %o0=buf, %o1=len */
+ clr %o2
+1: mov %o0, %o3
+ brz,pn %o1, __bzero_done
+ cmp %o1, 16
+ bl,pn %icc, __bzero_tiny
+ prefetch [%o0 + 0x000], #n_writes
+ andcc %o0, 0x3, %g0
+ be,pt %icc, 2f
+1: stb %o2, [%o0 + 0x00]
+ add %o0, 1, %o0
+ andcc %o0, 0x3, %g0
+ bne,pn %icc, 1b
+ sub %o1, 1, %o1
+2: andcc %o0, 0x7, %g0
+ be,pt %icc, 3f
+ stw %o2, [%o0 + 0x00]
+ sub %o1, 4, %o1
+ add %o0, 4, %o0
+3: and %o1, 0x38, %g1
+ cmp %o1, 0x40
+ andn %o1, 0x3f, %o4
+ bl,pn %icc, 5f
+ and %o1, 0x7, %o1
+ prefetch [%o0 + 0x040], #n_writes
+ prefetch [%o0 + 0x080], #n_writes
+ prefetch [%o0 + 0x0c0], #n_writes
+ prefetch [%o0 + 0x100], #n_writes
+ prefetch [%o0 + 0x140], #n_writes
+4: prefetch [%o0 + 0x180], #n_writes
+ stx %o2, [%o0 + 0x00]
+ stx %o2, [%o0 + 0x08]
+ stx %o2, [%o0 + 0x10]
+ stx %o2, [%o0 + 0x18]
+ stx %o2, [%o0 + 0x20]
+ stx %o2, [%o0 + 0x28]
+ stx %o2, [%o0 + 0x30]
+ stx %o2, [%o0 + 0x38]
+ subcc %o4, 0x40, %o4
+ bne,pt %icc, 4b
+ add %o0, 0x40, %o0
+ brz,pn %g1, 6f
+ nop
+5: stx %o2, [%o0 + 0x00]
+ subcc %g1, 8, %g1
+ bne,pt %icc, 5b
+ add %o0, 0x8, %o0
+6: brz,pt %o1, __bzero_done
+ nop
+__bzero_tiny:
+1: stb %o2, [%o0 + 0x00]
+ subcc %o1, 1, %o1
+ bne,pt %icc, 1b
+ add %o0, 1, %o0
+__bzero_done:
+ retl
+ mov %o3, %o0
+ .size __bzero, .-__bzero
+ .size __memset, .-__memset
+ .size memset, .-memset
+
+#define EX_ST(x,y) \
+98: x,y; \
+ .section .fixup; \
+ .align 4; \
+99: retl; \
+ mov %o1, %o0; \
+ .section __ex_table; \
+ .align 4; \
+ .word 98b, 99b; \
+ .text; \
+ .align 4;
+
+ .globl __bzero_noasi
+ .type __bzero_noasi, #function
+__bzero_noasi: /* %o0=buf, %o1=len */
+ brz,pn %o1, __bzero_noasi_done
+ cmp %o1, 16
+ bl,pn %icc, __bzero_noasi_tiny
+ EX_ST(prefetcha [%o0 + 0x00] %asi, #n_writes)
+ andcc %o0, 0x3, %g0
+ be,pt %icc, 2f
+1: EX_ST(stba %g0, [%o0 + 0x00] %asi)
+ add %o0, 1, %o0
+ andcc %o0, 0x3, %g0
+ bne,pn %icc, 1b
+ sub %o1, 1, %o1
+2: andcc %o0, 0x7, %g0
+ be,pt %icc, 3f
+ EX_ST(stwa %g0, [%o0 + 0x00] %asi)
+ sub %o1, 4, %o1
+ add %o0, 4, %o0
+3: and %o1, 0x38, %g1
+ cmp %o1, 0x40
+ andn %o1, 0x3f, %o4
+ bl,pn %icc, 5f
+ and %o1, 0x7, %o1
+ EX_ST(prefetcha [%o0 + 0x040] %asi, #n_writes)
+ EX_ST(prefetcha [%o0 + 0x080] %asi, #n_writes)
+ EX_ST(prefetcha [%o0 + 0x0c0] %asi, #n_writes)
+ EX_ST(prefetcha [%o0 + 0x100] %asi, #n_writes)
+ EX_ST(prefetcha [%o0 + 0x140] %asi, #n_writes)
+4: EX_ST(prefetcha [%o0 + 0x180] %asi, #n_writes)
+ EX_ST(stxa %g0, [%o0 + 0x00] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x08] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x10] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x18] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x20] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x28] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x30] %asi)
+ EX_ST(stxa %g0, [%o0 + 0x38] %asi)
+ subcc %o4, 0x40, %o4
+ bne,pt %icc, 4b
+ add %o0, 0x40, %o0
+ brz,pn %g1, 6f
+ nop
+5: EX_ST(stxa %g0, [%o0 + 0x00] %asi)
+ subcc %g1, 8, %g1
+ bne,pt %icc, 5b
+ add %o0, 0x8, %o0
+6: brz,pt %o1, __bzero_noasi_done
+ nop
+__bzero_noasi_tiny:
+1: EX_ST(stba %g0, [%o0 + 0x00] %asi)
+ subcc %o1, 1, %o1
+ bne,pt %icc, 1b
+ add %o0, 1, %o0
+__bzero_noasi_done:
+ retl
+ clr %o0
+ .size __bzero_noasi, .-__bzero_noasi