rename target/linux/generic-2.6 to generic

[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / patches-2.6.31 / 025-mips_disable_fpu.patch

diff --git a/target/linux/generic-2.6/patches-2.6.31/025-mips_disable_fpu.patch b/target/linux/generic-2.6/patches-2.6.31/025-mips_disable_fpu.patch
deleted file mode 100644 (file)
index 37d64a9..0000000
--- a/target/linux/generic-2.6/patches-2.6.31/025-mips_disable_fpu.patch
+++ /dev/null
@@ -1,155 +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
-@@ -825,6 +825,17 @@ 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
-@@ -56,6 +56,12 @@
- #endif
- #define __mips 4
- 
-+/* Further private data for which no space exists in mips_fpu_struct */
-+
-+struct mips_fpu_emulator_stats fpuemustats;
-+
-+#ifdef CONFIG_MIPS_FPU_EMU
-+
- /* Function which emulates a floating point instruction. */
- 
- static int fpu_emu(struct pt_regs *, struct mips_fpu_struct *,
-@@ -66,10 +72,6 @@ static int fpux_emu(struct pt_regs *,
-       struct mips_fpu_struct *, mips_instruction);
- #endif
- 
--/* Further private data for which no space exists in mips_fpu_struct */
--
--struct mips_fpu_emulator_stats fpuemustats;
--
- /* Control registers */
- 
- #define FPCREG_RID    0       /* $0  = revision id */
-@@ -1273,6 +1275,13 @@ int fpu_emulator_cop1Handler(struct pt_r
- 
-       return sig;
- }
-+#else
-+int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
-+        int has_fpu)
-+{
-+      return 0;
-+}
-+#endif /* CONFIG_MIPS_FPU_EMU */
- 
- #ifdef CONFIG_DEBUG_FS
- extern struct dentry *mips_debugfs_dir;
---- 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 */