Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 191 insertions, 0 deletions

diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S
new file mode 100644
index 000000000000..ebb643d8d14c
--- /dev/null
+++ b/arch/mips/kernel/r4k_fpu.S
@@ -0,0 +1,191 @@
+/*
+ * 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, 98, 99, 2000, 01 Ralf Baechle
+ *
+ * Multi-arch abstraction and asm macros for easier reading:
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc.
+ * Copyright (C) 1999, 2001 Silicon Graphics, Inc.
+ */
+#include <linux/config.h>
+#include <asm/asm.h>
+#include <asm/errno.h>
+#include <asm/fpregdef.h>
+#include <asm/mipsregs.h>
+#include <asm/offset.h>
+#include <asm/regdef.h>
+
+	.macro	EX insn, reg, src
+	.set	push
+	.set	nomacro
+.ex\@:	\insn	\reg, \src
+	.set	pop
+	.section __ex_table,"a"
+	PTR	.ex\@, fault
+	.previous
+	.endm
+
+	.set	noreorder
+	.set	mips3
+	/* Save floating point context */
+LEAF(_save_fp_context)
+	cfc1	t1, fcr31
+
+#ifdef CONFIG_MIPS64
+	/* Store the 16 odd double precision registers */
+	EX	sdc1 $f1, SC_FPREGS+8(a0)
+	EX	sdc1 $f3, SC_FPREGS+24(a0)
+	EX	sdc1 $f5, SC_FPREGS+40(a0)
+	EX	sdc1 $f7, SC_FPREGS+56(a0)
+	EX	sdc1 $f9, SC_FPREGS+72(a0)
+	EX	sdc1 $f11, SC_FPREGS+88(a0)
+	EX	sdc1 $f13, SC_FPREGS+104(a0)
+	EX	sdc1 $f15, SC_FPREGS+120(a0)
+	EX	sdc1 $f17, SC_FPREGS+136(a0)
+	EX	sdc1 $f19, SC_FPREGS+152(a0)
+	EX	sdc1 $f21, SC_FPREGS+168(a0)
+	EX	sdc1 $f23, SC_FPREGS+184(a0)
+	EX	sdc1 $f25, SC_FPREGS+200(a0)
+	EX	sdc1 $f27, SC_FPREGS+216(a0)
+	EX	sdc1 $f29, SC_FPREGS+232(a0)
+	EX	sdc1 $f31, SC_FPREGS+248(a0)
+#endif
+
+	/* Store the 16 even double precision registers */
+	EX	sdc1 $f0, SC_FPREGS+0(a0)
+	EX	sdc1 $f2, SC_FPREGS+16(a0)
+	EX	sdc1 $f4, SC_FPREGS+32(a0)
+	EX	sdc1 $f6, SC_FPREGS+48(a0)
+	EX	sdc1 $f8, SC_FPREGS+64(a0)
+	EX	sdc1 $f10, SC_FPREGS+80(a0)
+	EX	sdc1 $f12, SC_FPREGS+96(a0)
+	EX	sdc1 $f14, SC_FPREGS+112(a0)
+	EX	sdc1 $f16, SC_FPREGS+128(a0)
+	EX	sdc1 $f18, SC_FPREGS+144(a0)
+	EX	sdc1 $f20, SC_FPREGS+160(a0)
+	EX	sdc1 $f22, SC_FPREGS+176(a0)
+	EX	sdc1 $f24, SC_FPREGS+192(a0)
+	EX	sdc1 $f26, SC_FPREGS+208(a0)
+	EX	sdc1 $f28, SC_FPREGS+224(a0)
+	EX	sdc1 $f30, SC_FPREGS+240(a0)
+	EX	sw t1, SC_FPC_CSR(a0)
+	cfc1	t0, $0				# implementation/version
+	EX	sw t0, SC_FPC_EIR(a0)
+
+	jr	ra
+	 li	v0, 0					# success
+	END(_save_fp_context)
+
+#ifdef CONFIG_MIPS32_COMPAT
+	/* Save 32-bit process floating point context */
+LEAF(_save_fp_context32)
+	cfc1	t1, fcr31
+
+	EX	sdc1 $f0, SC32_FPREGS+0(a0)
+	EX	sdc1 $f2, SC32_FPREGS+16(a0)
+	EX	sdc1 $f4, SC32_FPREGS+32(a0)
+	EX	sdc1 $f6, SC32_FPREGS+48(a0)
+	EX	sdc1 $f8, SC32_FPREGS+64(a0)
+	EX	sdc1 $f10, SC32_FPREGS+80(a0)
+	EX	sdc1 $f12, SC32_FPREGS+96(a0)
+	EX	sdc1 $f14, SC32_FPREGS+112(a0)
+	EX	sdc1 $f16, SC32_FPREGS+128(a0)
+	EX	sdc1 $f18, SC32_FPREGS+144(a0)
+	EX	sdc1 $f20, SC32_FPREGS+160(a0)
+	EX	sdc1 $f22, SC32_FPREGS+176(a0)
+	EX	sdc1 $f24, SC32_FPREGS+192(a0)
+	EX	sdc1 $f26, SC32_FPREGS+208(a0)
+	EX	sdc1 $f28, SC32_FPREGS+224(a0)
+	EX	sdc1 $f30, SC32_FPREGS+240(a0)
+	EX	sw t1, SC32_FPC_CSR(a0)
+	cfc1	t0, $0				# implementation/version
+	EX	sw t0, SC32_FPC_EIR(a0)
+
+	jr	ra
+	 li	v0, 0					# success
+	END(_save_fp_context32)
+#endif
+
+/*
+ * Restore FPU state:
+ *  - fp gp registers
+ *  - cp1 status/control register
+ */
+LEAF(_restore_fp_context)
+	EX	lw t0, SC_FPC_CSR(a0)
+#ifdef CONFIG_MIPS64
+	EX	ldc1 $f1, SC_FPREGS+8(a0)
+	EX	ldc1 $f3, SC_FPREGS+24(a0)
+	EX	ldc1 $f5, SC_FPREGS+40(a0)
+	EX	ldc1 $f7, SC_FPREGS+56(a0)
+	EX	ldc1 $f9, SC_FPREGS+72(a0)
+	EX	ldc1 $f11, SC_FPREGS+88(a0)
+	EX	ldc1 $f13, SC_FPREGS+104(a0)
+	EX	ldc1 $f15, SC_FPREGS+120(a0)
+	EX	ldc1 $f17, SC_FPREGS+136(a0)
+	EX	ldc1 $f19, SC_FPREGS+152(a0)
+	EX	ldc1 $f21, SC_FPREGS+168(a0)
+	EX	ldc1 $f23, SC_FPREGS+184(a0)
+	EX	ldc1 $f25, SC_FPREGS+200(a0)
+	EX	ldc1 $f27, SC_FPREGS+216(a0)
+	EX	ldc1 $f29, SC_FPREGS+232(a0)
+	EX	ldc1 $f31, SC_FPREGS+248(a0)
+#endif
+	EX	ldc1 $f0, SC_FPREGS+0(a0)
+	EX	ldc1 $f2, SC_FPREGS+16(a0)
+	EX	ldc1 $f4, SC_FPREGS+32(a0)
+	EX	ldc1 $f6, SC_FPREGS+48(a0)
+	EX	ldc1 $f8, SC_FPREGS+64(a0)
+	EX	ldc1 $f10, SC_FPREGS+80(a0)
+	EX	ldc1 $f12, SC_FPREGS+96(a0)
+	EX	ldc1 $f14, SC_FPREGS+112(a0)
+	EX	ldc1 $f16, SC_FPREGS+128(a0)
+	EX	ldc1 $f18, SC_FPREGS+144(a0)
+	EX	ldc1 $f20, SC_FPREGS+160(a0)
+	EX	ldc1 $f22, SC_FPREGS+176(a0)
+	EX	ldc1 $f24, SC_FPREGS+192(a0)
+	EX	ldc1 $f26, SC_FPREGS+208(a0)
+	EX	ldc1 $f28, SC_FPREGS+224(a0)
+	EX	ldc1 $f30, SC_FPREGS+240(a0)
+	ctc1	t0, fcr31
+	jr	ra
+	 li	v0, 0					# success
+	END(_restore_fp_context)
+
+#ifdef CONFIG_MIPS32_COMPAT
+LEAF(_restore_fp_context32)
+	/* Restore an o32 sigcontext.  */
+	EX	lw t0, SC32_FPC_CSR(a0)
+	EX	ldc1 $f0, SC32_FPREGS+0(a0)
+	EX	ldc1 $f2, SC32_FPREGS+16(a0)
+	EX	ldc1 $f4, SC32_FPREGS+32(a0)
+	EX	ldc1 $f6, SC32_FPREGS+48(a0)
+	EX	ldc1 $f8, SC32_FPREGS+64(a0)
+	EX	ldc1 $f10, SC32_FPREGS+80(a0)
+	EX	ldc1 $f12, SC32_FPREGS+96(a0)
+	EX	ldc1 $f14, SC32_FPREGS+112(a0)
+	EX	ldc1 $f16, SC32_FPREGS+128(a0)
+	EX	ldc1 $f18, SC32_FPREGS+144(a0)
+	EX	ldc1 $f20, SC32_FPREGS+160(a0)
+	EX	ldc1 $f22, SC32_FPREGS+176(a0)
+	EX	ldc1 $f24, SC32_FPREGS+192(a0)
+	EX	ldc1 $f26, SC32_FPREGS+208(a0)
+	EX	ldc1 $f28, SC32_FPREGS+224(a0)
+	EX	ldc1 $f30, SC32_FPREGS+240(a0)
+	ctc1	t0, fcr31
+	jr	ra
+	 li	v0, 0					# success
+	END(_restore_fp_context32)
+	.set	reorder
+#endif
+
+	.type	fault@function
+	.ent	fault
+fault:	li	v0, -EFAULT				# failure
+	jr	ra
+	.end	fault