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[kernel] inform users when the in-kernel mips FPU emulator is disabled (#5774)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17794 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian 2009-09-28 20:35:42 +00:00
parent 1106afd9fe
commit bfd6b9d73e
4 changed files with 37 additions and 19 deletions
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4
target/linux/generic-2.6/patches-2.6.27/024-mips_disable_fpu.patch
View File

@ -115,7 +115,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
void fpu_emulator_init_fpu(void)
{
static int first = 1;
@@ -112,4 +113,34 @@ int fpu_emulator_restore_context32(struc
@@ -112,4 +113,36 @@ int fpu_emulator_restore_context32(struc
return err;
}
@ -125,6 +125,8 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+
+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;
+}
+

4
target/linux/generic-2.6/patches-2.6.28/024-mips_disable_fpu.patch
View File

@ -115,7 +115,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
void fpu_emulator_init_fpu(void)
{
static int first = 1;
@@ -112,4 +113,34 @@ int fpu_emulator_restore_context32(struc
@@ -112,4 +113,36 @@ int fpu_emulator_restore_context32(struc
return err;
}
@ -125,6 +125,8 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+
+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;
+}
+

44
target/linux/generic-2.6/patches-2.6.30/025-mips_disable_fpu.patch
View File

@ -6,9 +6,11 @@ precious blocks on an embedded system.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
--
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -791,6 +791,17 @@ config I8259
Index: linux-2.6.30.7/arch/mips/Kconfig
===================================================================
--- linux-2.6.30.7.orig/arch/mips/Kconfig 2009-09-28 08:21:26.000000000 +0200
+++ linux-2.6.30.7/arch/mips/Kconfig 2009-09-28 08:21:31.000000000 +0200
@@ -791,6 +791,17 @@
config MIPS_BONITO64
bool
@ -26,8 +28,10 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
config MIPS_MSC
bool
--- a/arch/mips/math-emu/Makefile
+++ b/arch/mips/math-emu/Makefile
Index: linux-2.6.30.7/arch/mips/math-emu/Makefile
===================================================================
--- linux-2.6.30.7.orig/arch/mips/math-emu/Makefile 2009-09-28 08:21:26.000000000 +0200
+++ linux-2.6.30.7/arch/mips/math-emu/Makefile 2009-09-28 08:21:31.000000000 +0200
@@ -2,12 +2,14 @@
# Makefile for the Linux/MIPS kernel FPU emulation.
#
@ -45,8 +49,10 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+ dp_sqrt.o sp_sqrt.o
EXTRA_CFLAGS += -Werror
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
Index: linux-2.6.30.7/arch/mips/math-emu/cp1emu.c
===================================================================
--- linux-2.6.30.7.orig/arch/mips/math-emu/cp1emu.c 2009-09-28 08:21:26.000000000 +0200
+++ linux-2.6.30.7/arch/mips/math-emu/cp1emu.c 2009-09-28 08:21:31.000000000 +0200
@@ -56,6 +56,12 @@
#endif
#define __mips 4
@ -60,7 +66,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
/* 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 *,
@@ -66,10 +72,6 @@
struct mips_fpu_struct *, mips_instruction);
#endif
@ -71,7 +77,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
/* Control registers */
#define FPCREG_RID 0 /* $0 = revision id */
@@ -1273,6 +1275,13 @@ int fpu_emulator_cop1Handler(struct pt_r
@@ -1273,6 +1275,13 @@
return sig;
}
@ -85,9 +91,11 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
#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
Index: linux-2.6.30.7/arch/mips/math-emu/dsemul.c
===================================================================
--- linux-2.6.30.7.orig/arch/mips/math-emu/dsemul.c 2009-09-28 08:21:26.000000000 +0200
+++ linux-2.6.30.7/arch/mips/math-emu/dsemul.c 2009-09-28 08:21:31.000000000 +0200
@@ -109,6 +109,7 @@
return SIGILL; /* force out of emulation loop */
}
@ -95,7 +103,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
int do_dsemulret(struct pt_regs *xcp)
{
struct emuframe __user *fr;
@@ -165,3 +166,9 @@ int do_dsemulret(struct pt_regs *xcp)
@@ -165,3 +166,9 @@
return 1;
}
@ -105,8 +113,10 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+ return 0;
+}
+#endif /* CONFIG_MIPS_FPU_EMU */
--- a/arch/mips/math-emu/kernel_linkage.c
+++ b/arch/mips/math-emu/kernel_linkage.c
Index: linux-2.6.30.7/arch/mips/math-emu/kernel_linkage.c
===================================================================
--- linux-2.6.30.7.orig/arch/mips/math-emu/kernel_linkage.c 2009-09-28 08:21:26.000000000 +0200
+++ linux-2.6.30.7/arch/mips/math-emu/kernel_linkage.c 2009-09-28 08:22:36.000000000 +0200
@@ -29,6 +29,7 @@
#define SIGNALLING_NAN 0x7ff800007ff80000LL
@ -115,7 +125,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
void fpu_emulator_init_fpu(void)
{
static int first = 1;
@@ -112,4 +113,34 @@ int fpu_emulator_restore_context32(struc
@@ -112,4 +113,36 @@
return err;
}
@ -125,6 +135,8 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+
+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;
+}
+

4
target/linux/generic-2.6/patches-2.6.31/025-mips_disable_fpu.patch
View File

@ -115,7 +115,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
void fpu_emulator_init_fpu(void)
{
static int first = 1;
@@ -112,4 +113,34 @@ int fpu_emulator_restore_context32(struc
@@ -112,4 +113,36 @@ int fpu_emulator_restore_context32(struc
return err;
}
@ -125,6 +125,8 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
+
+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;
+}
+