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/mips/kernel/r2300_fpu.S b/arch/mips/kernel/r2300_fpu.S
new file mode 100644
index 0000000..f83c31f
--- /dev/null
+++ b/arch/mips/kernel/r2300_fpu.S
@@ -0,0 +1,126 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 1998 by Ralf Baechle
+ *
+ * Multi-arch abstraction and asm macros for easier reading:
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ *
+ * Further modifications to make this work:
+ * Copyright (c) 1998 Harald Koerfgen
+ */
+#include <asm/asm.h>
+#include <asm/errno.h>
+#include <asm/fpregdef.h>
+#include <asm/mipsregs.h>
+#include <asm/offset.h>
+#include <asm/regdef.h>
+
+#define EX(a,b) \
+9: a,##b; \
+ .section __ex_table,"a"; \
+ PTR 9b,bad_stack; \
+ .previous
+
+ .set noreorder
+ .set mips1
+ /* Save floating point context */
+LEAF(_save_fp_context)
+ li v0, 0 # assume success
+ cfc1 t1,fcr31
+ EX(swc1 $f0,(SC_FPREGS+0)(a0))
+ EX(swc1 $f1,(SC_FPREGS+8)(a0))
+ EX(swc1 $f2,(SC_FPREGS+16)(a0))
+ EX(swc1 $f3,(SC_FPREGS+24)(a0))
+ EX(swc1 $f4,(SC_FPREGS+32)(a0))
+ EX(swc1 $f5,(SC_FPREGS+40)(a0))
+ EX(swc1 $f6,(SC_FPREGS+48)(a0))
+ EX(swc1 $f7,(SC_FPREGS+56)(a0))
+ EX(swc1 $f8,(SC_FPREGS+64)(a0))
+ EX(swc1 $f9,(SC_FPREGS+72)(a0))
+ EX(swc1 $f10,(SC_FPREGS+80)(a0))
+ EX(swc1 $f11,(SC_FPREGS+88)(a0))
+ EX(swc1 $f12,(SC_FPREGS+96)(a0))
+ EX(swc1 $f13,(SC_FPREGS+104)(a0))
+ EX(swc1 $f14,(SC_FPREGS+112)(a0))
+ EX(swc1 $f15,(SC_FPREGS+120)(a0))
+ EX(swc1 $f16,(SC_FPREGS+128)(a0))
+ EX(swc1 $f17,(SC_FPREGS+136)(a0))
+ EX(swc1 $f18,(SC_FPREGS+144)(a0))
+ EX(swc1 $f19,(SC_FPREGS+152)(a0))
+ EX(swc1 $f20,(SC_FPREGS+160)(a0))
+ EX(swc1 $f21,(SC_FPREGS+168)(a0))
+ EX(swc1 $f22,(SC_FPREGS+176)(a0))
+ EX(swc1 $f23,(SC_FPREGS+184)(a0))
+ EX(swc1 $f24,(SC_FPREGS+192)(a0))
+ EX(swc1 $f25,(SC_FPREGS+200)(a0))
+ EX(swc1 $f26,(SC_FPREGS+208)(a0))
+ EX(swc1 $f27,(SC_FPREGS+216)(a0))
+ EX(swc1 $f28,(SC_FPREGS+224)(a0))
+ EX(swc1 $f29,(SC_FPREGS+232)(a0))
+ EX(swc1 $f30,(SC_FPREGS+240)(a0))
+ EX(swc1 $f31,(SC_FPREGS+248)(a0))
+ EX(sw t1,(SC_FPC_CSR)(a0))
+ cfc1 t0,$0 # implementation/version
+ jr ra
+ .set nomacro
+ EX(sw t0,(SC_FPC_EIR)(a0))
+ .set macro
+ END(_save_fp_context)
+
+/*
+ * Restore FPU state:
+ * - fp gp registers
+ * - cp1 status/control register
+ *
+ * We base the decision which registers to restore from the signal stack
+ * frame on the current content of c0_status, not on the content of the
+ * stack frame which might have been changed by the user.
+ */
+LEAF(_restore_fp_context)
+ li v0, 0 # assume success
+ EX(lw t0,(SC_FPC_CSR)(a0))
+ EX(lwc1 $f0,(SC_FPREGS+0)(a0))
+ EX(lwc1 $f1,(SC_FPREGS+8)(a0))
+ EX(lwc1 $f2,(SC_FPREGS+16)(a0))
+ EX(lwc1 $f3,(SC_FPREGS+24)(a0))
+ EX(lwc1 $f4,(SC_FPREGS+32)(a0))
+ EX(lwc1 $f5,(SC_FPREGS+40)(a0))
+ EX(lwc1 $f6,(SC_FPREGS+48)(a0))
+ EX(lwc1 $f7,(SC_FPREGS+56)(a0))
+ EX(lwc1 $f8,(SC_FPREGS+64)(a0))
+ EX(lwc1 $f9,(SC_FPREGS+72)(a0))
+ EX(lwc1 $f10,(SC_FPREGS+80)(a0))
+ EX(lwc1 $f11,(SC_FPREGS+88)(a0))
+ EX(lwc1 $f12,(SC_FPREGS+96)(a0))
+ EX(lwc1 $f13,(SC_FPREGS+104)(a0))
+ EX(lwc1 $f14,(SC_FPREGS+112)(a0))
+ EX(lwc1 $f15,(SC_FPREGS+120)(a0))
+ EX(lwc1 $f16,(SC_FPREGS+128)(a0))
+ EX(lwc1 $f17,(SC_FPREGS+136)(a0))
+ EX(lwc1 $f18,(SC_FPREGS+144)(a0))
+ EX(lwc1 $f19,(SC_FPREGS+152)(a0))
+ EX(lwc1 $f20,(SC_FPREGS+160)(a0))
+ EX(lwc1 $f21,(SC_FPREGS+168)(a0))
+ EX(lwc1 $f22,(SC_FPREGS+176)(a0))
+ EX(lwc1 $f23,(SC_FPREGS+184)(a0))
+ EX(lwc1 $f24,(SC_FPREGS+192)(a0))
+ EX(lwc1 $f25,(SC_FPREGS+200)(a0))
+ EX(lwc1 $f26,(SC_FPREGS+208)(a0))
+ EX(lwc1 $f27,(SC_FPREGS+216)(a0))
+ EX(lwc1 $f28,(SC_FPREGS+224)(a0))
+ EX(lwc1 $f29,(SC_FPREGS+232)(a0))
+ EX(lwc1 $f30,(SC_FPREGS+240)(a0))
+ EX(lwc1 $f31,(SC_FPREGS+248)(a0))
+ jr ra
+ ctc1 t0,fcr31
+ END(_restore_fp_context)
+ .set reorder
+
+ .type fault@function
+ .ent fault
+fault: li v0, -EFAULT
+ jr ra
+ .end fault