X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.33%2F025-mips_disable_fpu.patch;fp=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.33%2F025-mips_disable_fpu.patch;h=0000000000000000000000000000000000000000;hb=c6ab1b23be796c1bbe1915ac566fe3377ae8109f;hp=e6b764e2df31c7042296996b0e7a67bd27fe5adf;hpb=01131f5dd9f61be5a5c857152ca079f316fd7538;p=openwrt%2Fsvn-archive%2Farchive.git

diff --git a/target/linux/generic-2.6/patches-2.6.33/025-mips_disable_fpu.patch b/target/linux/generic-2.6/patches-2.6.33/025-mips_disable_fpu.patch
deleted file mode 100644
index e6b764e2df..0000000000
--- a/target/linux/generic-2.6/patches-2.6.33/025-mips_disable_fpu.patch
+++ /dev/null
@@ -1,161 +0,0 @@
-MIPS: allow disabling the kernel FPU emulator
-
-This patch allows turning off the in-kernel Algorithmics
-FPU emulator support, which allows one to save a couple of
-precious blocks on an embedded system.
-
-Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
---- a/arch/mips/Kconfig
-+++ b/arch/mips/Kconfig
-@@ -839,6 +839,17 @@ config I8259
- config MIPS_BONITO64
- 	bool
- 
-+config MIPS_FPU_EMU
-+	bool "Enable FPU emulation"
-+	default y
-+	help
-+	   This option allows building a kernel with or without the Algorithmics
-+	   FPU emulator enabled. Turning off this option results in a kernel which
-+	   does not catch floating operations exceptions. Make sure that your toolchain
-+	   is configured to enable software floating point emulation in that case.
-+		
-+	   If unsure say Y here.
-+
- config MIPS_MSC
- 	bool
- 
---- a/arch/mips/math-emu/Makefile
-+++ b/arch/mips/math-emu/Makefile
-@@ -2,12 +2,14 @@
- # Makefile for the Linux/MIPS kernel FPU emulation.
- #
- 
--obj-y	:= cp1emu.o ieee754m.o ieee754d.o ieee754dp.o ieee754sp.o ieee754.o \
-+obj-y	:=	kernel_linkage.o dsemul.o cp1emu.o
-+
-+obj-$(CONFIG_MIPS_FPU_EMU)	+= ieee754m.o ieee754d.o ieee754dp.o ieee754sp.o ieee754.o \
- 	   ieee754xcpt.o dp_frexp.o dp_modf.o dp_div.o dp_mul.o dp_sub.o \
- 	   dp_add.o dp_fsp.o dp_cmp.o dp_logb.o dp_scalb.o dp_simple.o \
- 	   dp_tint.o dp_fint.o dp_tlong.o dp_flong.o sp_frexp.o sp_modf.o \
- 	   sp_div.o sp_mul.o sp_sub.o sp_add.o sp_fdp.o sp_cmp.o sp_logb.o \
- 	   sp_scalb.o sp_simple.o sp_tint.o sp_fint.o sp_tlong.o sp_flong.o \
--	   dp_sqrt.o sp_sqrt.o kernel_linkage.o dsemul.o
-+	   dp_sqrt.o sp_sqrt.o
- 
- EXTRA_CFLAGS += -Werror
---- a/arch/mips/math-emu/cp1emu.c
-+++ b/arch/mips/math-emu/cp1emu.c
-@@ -58,7 +58,11 @@
- #define __mips 4
- 
- /* Function which emulates a floating point instruction. */
-+#ifdef CONFIG_DEBUG_FS
-+DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
-+#endif
- 
-+#ifdef CONFIG_MIPS_FPU_EMU
- static int fpu_emu(struct pt_regs *, struct mips_fpu_struct *,
- 	mips_instruction);
- 
-@@ -69,10 +73,6 @@ static int fpux_emu(struct pt_regs *,
- 
- /* Further private data for which no space exists in mips_fpu_struct */
- 
--#ifdef CONFIG_DEBUG_FS
--DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
--#endif
--
- /* Control registers */
- 
- #define FPCREG_RID	0	/* $0  = revision id */
-@@ -1277,7 +1277,6 @@ int fpu_emulator_cop1Handler(struct pt_r
- 
- 	return sig;
- }
--
- #ifdef CONFIG_DEBUG_FS
- 
- static int fpuemu_stat_get(void *data, u64 *val)
-@@ -1326,4 +1325,11 @@ static int __init debugfs_fpuemu(void)
- 	return 0;
- }
- __initcall(debugfs_fpuemu);
--#endif
-+#endif /* CONFIG_DEBUGFS */
-+#else
-+int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
-+        int has_fpu)
-+{
-+	return 0;
-+}
-+#endif /* CONFIG_MIPS_FPU_EMU */
---- a/arch/mips/math-emu/dsemul.c
-+++ b/arch/mips/math-emu/dsemul.c
-@@ -109,6 +109,7 @@ int mips_dsemul(struct pt_regs *regs, mi
- 	return SIGILL;		/* force out of emulation loop */
- }
- 
-+#ifdef CONFIG_MIPS_FPU_EMU
- int do_dsemulret(struct pt_regs *xcp)
- {
- 	struct emuframe __user *fr;
-@@ -165,3 +166,9 @@ int do_dsemulret(struct pt_regs *xcp)
- 
- 	return 1;
- }
-+#else
-+int do_dsemulret(struct pt_regs *xcp)
-+{
-+	return 0;
-+}
-+#endif /* CONFIG_MIPS_FPU_EMU */
---- a/arch/mips/math-emu/kernel_linkage.c
-+++ b/arch/mips/math-emu/kernel_linkage.c
-@@ -29,6 +29,7 @@
- 
- #define SIGNALLING_NAN 0x7ff800007ff80000LL
- 
-+#ifdef CONFIG_MIPS_FPU_EMU
- void fpu_emulator_init_fpu(void)
- {
- 	static int first = 1;
-@@ -112,4 +113,36 @@ int fpu_emulator_restore_context32(struc
- 
- 	return err;
- }
--#endif
-+#endif	/* CONFIG_64BIT */
-+#else
-+
-+void fpu_emulator_init_fpu(void)
-+{
-+	printk(KERN_INFO "FPU emulator disabled, make sure your toolchain"
-+		"was compiled with software floating point support (soft-float)\n");
-+	return;
-+}
-+
-+int fpu_emulator_save_context(struct sigcontext __user *sc)
-+{
-+	return 0;
-+}
-+
-+int fpu_emulator_restore_context(struct sigcontext __user *sc)
-+{
-+	return 0;
-+}
-+
-+int fpu_emulator_save_context32(struct sigcontext32 __user *sc)
-+{
-+	return 0;
-+}
-+
-+int fpu_emulator_restore_context32(struct sigcontext32 __user *sc)
-+{
-+	return 0;
-+}
-+
-+#ifdef CONFIG_64BIT
-+#endif	/* CONFIG_64BIT */
-+#endif /* CONFIG_MIPS_FPU_EMU */