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author | Imre Kaloz <kaloz@openwrt.org> | 2015-03-26 09:42:59 +0000 |
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committer | Imre Kaloz <kaloz@openwrt.org> | 2015-03-26 09:42:59 +0000 |
commit | af69bf56b6810419879f1aecad8160697877a8c6 (patch) | |
tree | 3904731ce5bfb9f3c9f44ef4aa3350114ee4a46e /target/linux/generic/patches-3.19/304-mips_disable_fpu.patch | |
parent | 6c0d6a3cb32b0b366b6c28aa7735f00a44226edd (diff) | |
download | upstream-af69bf56b6810419879f1aecad8160697877a8c6.tar.gz upstream-af69bf56b6810419879f1aecad8160697877a8c6.tar.bz2 upstream-af69bf56b6810419879f1aecad8160697877a8c6.zip |
drop 3.19 support
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
SVN-Revision: 45002
Diffstat (limited to 'target/linux/generic/patches-3.19/304-mips_disable_fpu.patch')
-rw-r--r-- | target/linux/generic/patches-3.19/304-mips_disable_fpu.patch | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/target/linux/generic/patches-3.19/304-mips_disable_fpu.patch b/target/linux/generic/patches-3.19/304-mips_disable_fpu.patch deleted file mode 100644 index 30eeb88019..0000000000 --- a/target/linux/generic/patches-3.19/304-mips_disable_fpu.patch +++ /dev/null @@ -1,79 +0,0 @@ ---- a/arch/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -2521,6 +2521,20 @@ config MIPS_O32_FP64_SUPPORT - - If unsure, say N. - -+config MIPS_FPU_EMULATOR -+ bool "MIPS FPU Emulator" -+ default y -+ help -+ This option lets you disable the built-in MIPS FPU (Coprocessor 1) -+ emulator, which handles floating-point instructions on processors -+ without a hardware FPU. It is generally a good idea to keep the -+ emulator built-in, unless you are perfectly sure you have a -+ complete soft-float environment. With the emulator disabled, all -+ users of float operations will be killed with an illegal instr- -+ uction exception. -+ -+ Say Y, please. -+ - config USE_OF - bool - select OF ---- a/arch/mips/Makefile -+++ b/arch/mips/Makefile -@@ -275,7 +275,7 @@ OBJCOPYFLAGS += --remove-section=.regin - head-y := arch/mips/kernel/head.o - - libs-y += arch/mips/lib/ --libs-y += arch/mips/math-emu/ -+libs-$(CONFIG_MIPS_FPU_EMULATOR) += arch/mips/math-emu/ - - # See arch/mips/Kbuild for content of core part of the kernel - core-y += arch/mips/ ---- a/arch/mips/include/asm/fpu.h -+++ b/arch/mips/include/asm/fpu.h -@@ -210,8 +210,10 @@ static inline int init_fpu(void) - /* Restore FRE */ - write_c0_config5(config5); - enable_fpu_hazard(); -- } else -+ } else if (IS_ENABLED(CONFIG_MIPS_FPU_EMULATOR)) - fpu_emulator_init_fpu(); -+ else -+ ret = SIGILL; - - return ret; - } ---- a/arch/mips/include/asm/fpu_emulator.h -+++ b/arch/mips/include/asm/fpu_emulator.h -@@ -30,6 +30,7 @@ - #include <asm/local.h> - #include <asm/processor.h> - -+#ifdef CONFIG_MIPS_FPU_EMULATOR - #ifdef CONFIG_DEBUG_FS - - struct mips_fpu_emulator_stats { -@@ -65,6 +66,20 @@ extern int do_dsemulret(struct pt_regs * - extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, - struct mips_fpu_struct *ctx, int has_fpu, - void *__user *fault_addr); -+#else /* no CONFIG_MIPS_FPU_EMULATOR */ -+static inline int do_dsemulret(struct pt_regs *xcp) -+{ -+ return 0; /* 0 means error, should never get here anyway */ -+} -+ -+static inline int fpu_emulator_cop1Handler(struct pt_regs *xcp, -+ struct mips_fpu_struct *ctx, int has_fpu, -+ void *__user *fault_addr) -+{ -+ return SIGILL; /* we don't speak MIPS FPU */ -+} -+#endif /* CONFIG_MIPS_FPU_EMULATOR */ -+ - int process_fpemu_return(int sig, void __user *fault_addr); - int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, - unsigned long *contpc); |