diff options
| -rw-r--r-- | arch/mips/Kconfig | 15 | ||||
| -rw-r--r-- | arch/mips/Makefile | 23 | ||||
| -rw-r--r-- | include/asm-mips/page.h | 2 |
3 files changed, 21 insertions, 19 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b09eee2281c..492f581fe6b 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1853,21 +1853,6 @@ source "fs/Kconfig.binfmt" config TRAD_SIGNALS bool -config BUILD_ELF64 - bool "Use 64-bit ELF format for building" - depends on 64BIT - help - A 64-bit kernel is usually built using the 64-bit ELF binary object - format as it's one that allows arbitrary 64-bit constructs. For - kernels that are loaded within the KSEG compatibility segments the - 32-bit ELF format can optionally be used resulting in a somewhat - smaller binary, but this option is not explicitly supported by the - toolchain and since binutils 2.14 it does not even work at all. - - Say Y to use the 64-bit format or N to use the 32-bit one. - - If unsure say Y. - config BINFMT_IRIX bool "Include IRIX binary compatibility" depends on CPU_BIG_ENDIAN && 32BIT && BROKEN diff --git a/arch/mips/Makefile b/arch/mips/Makefile index d5d5831b6e2..4337c492ed1 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -60,9 +60,6 @@ vmlinux-32 = vmlinux.32 vmlinux-64 = vmlinux cflags-y += -mabi=64 -ifndef CONFIG_BUILD_ELF64 -cflags-y += $(call cc-option,-msym32) -endif endif all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) @@ -576,6 +573,26 @@ else JIFFIES = jiffies_64 endif +# +# Automatically detect the build format. By default we choose +# the elf format according to the load address. +# We can always force a build with a 64-bits symbol format by +# passing 'BUILD_ELF32=no' option to the make's command line. +# +ifdef CONFIG_64BIT + ifndef BUILD_ELF32 + ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) + BUILD_ELF32 = y + endif + endif + + ifeq ($(BUILD_ELF32), y) + cflags-y += -msym32 + else + cflags-y += -DCONFIG_BUILD_ELF64 + endif +endif + AFLAGS += $(cflags-y) CFLAGS += $(cflags-y) \ -D"VMLINUX_LOAD_ADDRESS=$(load-y)" diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h index e3301e54d55..b92dd8c760d 100644 --- a/include/asm-mips/page.h +++ b/include/asm-mips/page.h @@ -142,7 +142,7 @@ typedef struct { unsigned long pgprot; } pgprot_t; /* * __pa()/__va() should be used only during mem init. */ -#ifdef CONFIG_64BIT +#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64) #define __pa(x) \ ({ \ unsigned long __x = (unsigned long)(x); \ |