diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/byteorder.h | 25 | ||||
| -rw-r--r-- | arch/arm/include/asm/elf.h | 72 | ||||
| -rw-r--r-- | arch/arm/include/asm/io.h | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/mach/map.h | 3 | ||||
| -rw-r--r-- | arch/arm/include/asm/page.h | 5 | ||||
| -rw-r--r-- | arch/arm/include/asm/pgtable.h | 83 |
6 files changed, 105 insertions, 87 deletions
diff --git a/arch/arm/include/asm/byteorder.h b/arch/arm/include/asm/byteorder.h index 4fbfb22f65a0..d04a7a2bc2e9 100644 --- a/arch/arm/include/asm/byteorder.h +++ b/arch/arm/include/asm/byteorder.h @@ -18,7 +18,15 @@ #include <linux/compiler.h> #include <asm/types.h> -static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) +#ifdef __ARMEB__ +# define __BIG_ENDIAN +#else +# define __LITTLE_ENDIAN +#endif + +#define __SWAB_64_THRU_32__ + +static inline __attribute_const__ __u32 __arch_swab32(__u32 x) { __u32 t; @@ -40,19 +48,8 @@ static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) return x; } +#define __arch_swab32 __arch_swab32 -#define __arch__swab32(x) ___arch__swab32(x) - -#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) -# define __BYTEORDER_HAS_U64__ -# define __SWAB_64_THRU_32__ -#endif - -#ifdef __ARMEB__ -#include <linux/byteorder/big_endian.h> -#else -#include <linux/byteorder/little_endian.h> -#endif +#include <linux/byteorder.h> #endif - diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index 4ca751627489..5be016980c19 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -3,7 +3,6 @@ #include <asm/hwcap.h> -#ifndef __ASSEMBLY__ /* * ELF register definitions.. */ @@ -17,12 +16,34 @@ typedef unsigned long elf_freg_t[3]; typedef elf_greg_t elf_gregset_t[ELF_NGREG]; typedef struct user_fp elf_fpregset_t; -#endif #define EM_ARM 40 -#define EF_ARM_APCS26 0x08 -#define EF_ARM_SOFT_FLOAT 0x200 -#define EF_ARM_EABI_MASK 0xFF000000 + +#define EF_ARM_EABI_MASK 0xff000000 +#define EF_ARM_EABI_UNKNOWN 0x00000000 +#define EF_ARM_EABI_VER1 0x01000000 +#define EF_ARM_EABI_VER2 0x02000000 +#define EF_ARM_EABI_VER3 0x03000000 +#define EF_ARM_EABI_VER4 0x04000000 +#define EF_ARM_EABI_VER5 0x05000000 + +#define EF_ARM_BE8 0x00800000 /* ABI 4,5 */ +#define EF_ARM_LE8 0x00400000 /* ABI 4,5 */ +#define EF_ARM_MAVERICK_FLOAT 0x00000800 /* ABI 0 */ +#define EF_ARM_VFP_FLOAT 0x00000400 /* ABI 0 */ +#define EF_ARM_SOFT_FLOAT 0x00000200 /* ABI 0 */ +#define EF_ARM_OLD_ABI 0x00000100 /* ABI 0 */ +#define EF_ARM_NEW_ABI 0x00000080 /* ABI 0 */ +#define EF_ARM_ALIGN8 0x00000040 /* ABI 0 */ +#define EF_ARM_PIC 0x00000020 /* ABI 0 */ +#define EF_ARM_MAPSYMSFIRST 0x00000010 /* ABI 2 */ +#define EF_ARM_APCS_FLOAT 0x00000010 /* ABI 0, floats in fp regs */ +#define EF_ARM_DYNSYMSUSESEGIDX 0x00000008 /* ABI 2 */ +#define EF_ARM_APCS_26 0x00000008 /* ABI 0 */ +#define EF_ARM_SYMSARESORTED 0x00000004 /* ABI 1,2 */ +#define EF_ARM_INTERWORK 0x00000004 /* ABI 0 */ +#define EF_ARM_HASENTRY 0x00000002 /* All */ +#define EF_ARM_RELEXEC 0x00000001 /* All */ #define R_ARM_NONE 0 #define R_ARM_PC24 1 @@ -41,7 +62,6 @@ typedef struct user_fp elf_fpregset_t; #endif #define ELF_ARCH EM_ARM -#ifndef __ASSEMBLY__ /* * This yields a string that ld.so will use to load implementation * specific libraries for optimization. This is more specific in @@ -59,25 +79,17 @@ typedef struct user_fp elf_fpregset_t; #define ELF_PLATFORM (elf_platform) extern char elf_platform[]; -#endif -/* - * This is used to ensure we don't load something for the wrong architecture. - */ -#define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x)) +struct elf32_hdr; /* - * 32-bit code is always OK. Some cpus can do 26-bit, some can't. + * This is used to ensure we don't load something for the wrong architecture. */ -#define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x)) - -#define ELF_THUMB_OK(x) \ - ((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \ - ((x)->e_entry & 3) == 0) +extern int elf_check_arch(const struct elf32_hdr *); +#define elf_check_arch elf_check_arch -#define ELF_26BIT_OK(x) \ - ((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \ - ((x)->e_flags & EF_ARM_APCS26) == 0) +extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int); +#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk) #define USE_ELF_CORE_DUMP #define ELF_EXEC_PAGESIZE 4096 @@ -94,23 +106,7 @@ extern char elf_platform[]; have no such handler. */ #define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0 -/* - * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0 - * and CP1, we only enable access to the iWMMXt coprocessor if the - * binary is EABI or softfloat (and thus, guaranteed not to use - * FPA instructions.) - */ -#define SET_PERSONALITY(ex, ibcs2) \ - do { \ - if ((ex).e_flags & EF_ARM_APCS26) { \ - set_personality(PER_LINUX); \ - } else { \ - set_personality(PER_LINUX_32BIT); \ - if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \ - set_thread_flag(TIF_USING_IWMMXT); \ - else \ - clear_thread_flag(TIF_USING_IWMMXT); \ - } \ - } while (0) +extern void elf_set_personality(const struct elf32_hdr *); +#define SET_PERSONALITY(ex, ibcs2) elf_set_personality(&(ex)) #endif diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 94a95d7fafd6..a8094451be57 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -60,7 +60,7 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen); #define MT_DEVICE 0 #define MT_DEVICE_NONSHARED 1 #define MT_DEVICE_CACHED 2 -#define MT_DEVICE_IXP2000 3 +#define MT_DEVICE_WC 3 /* * types 4 onwards can be found in asm/mach/map.h and are undefined * for ioremap @@ -215,11 +215,13 @@ extern void _memset_io(volatile void __iomem *, int, size_t); #define ioremap(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE) #define ioremap_nocache(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE) #define ioremap_cached(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE_CACHED) +#define ioremap_wc(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE_WC) #define iounmap(cookie) __iounmap(cookie) #else #define ioremap(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE) #define ioremap_nocache(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE) #define ioremap_cached(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE_CACHED) +#define ioremap_wc(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE_WC) #define iounmap(cookie) __arch_iounmap(cookie) #endif diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h index 06f583b13999..cb1139ac1943 100644 --- a/arch/arm/include/asm/mach/map.h +++ b/arch/arm/include/asm/mach/map.h @@ -26,9 +26,6 @@ struct map_desc { #define MT_MEMORY 8 #define MT_ROM 9 -#define MT_NONSHARED_DEVICE MT_DEVICE_NONSHARED -#define MT_IXP2000_DEVICE MT_DEVICE_IXP2000 - #ifdef CONFIG_MMU extern void iotable_init(struct map_desc *, int); #else diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h index cf2e2680daaa..bed1c0a00368 100644 --- a/arch/arm/include/asm/page.h +++ b/arch/arm/include/asm/page.h @@ -184,8 +184,9 @@ typedef struct page *pgtable_t; #endif /* !__ASSEMBLY__ */ -#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_DATA_DEFAULT_FLAGS \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) /* * With EABI on ARMv5 and above we must have 64-bit aligned slab pointers. diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index ec630109a8c7..110295c5461d 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -164,14 +164,30 @@ extern void __pgd_error(const char *file, int line, unsigned long val); #define L_PTE_PRESENT (1 << 0) #define L_PTE_FILE (1 << 1) /* only when !PRESENT */ #define L_PTE_YOUNG (1 << 1) -#define L_PTE_BUFFERABLE (1 << 2) /* matches PTE */ -#define L_PTE_CACHEABLE (1 << 3) /* matches PTE */ -#define L_PTE_USER (1 << 4) -#define L_PTE_WRITE (1 << 5) -#define L_PTE_EXEC (1 << 6) -#define L_PTE_DIRTY (1 << 7) +#define L_PTE_BUFFERABLE (1 << 2) /* obsolete, matches PTE */ +#define L_PTE_CACHEABLE (1 << 3) /* obsolete, matches PTE */ +#define L_PTE_DIRTY (1 << 6) +#define L_PTE_WRITE (1 << 7) +#define L_PTE_USER (1 << 8) +#define L_PTE_EXEC (1 << 9) #define L_PTE_SHARED (1 << 10) /* shared(v6), coherent(xsc3) */ +/* + * These are the memory types, defined to be compatible with + * pre-ARMv6 CPUs cacheable and bufferable bits: XXCB + */ +#define L_PTE_MT_UNCACHED (0x00 << 2) /* 0000 */ +#define L_PTE_MT_BUFFERABLE (0x01 << 2) /* 0001 */ +#define L_PTE_MT_WRITETHROUGH (0x02 << 2) /* 0010 */ +#define L_PTE_MT_WRITEBACK (0x03 << 2) /* 0011 */ +#define L_PTE_MT_MINICACHE (0x06 << 2) /* 0110 (sa1100, xscale) */ +#define L_PTE_MT_WRITEALLOC (0x07 << 2) /* 0111 */ +#define L_PTE_MT_DEV_SHARED (0x04 << 2) /* 0100 */ +#define L_PTE_MT_DEV_NONSHARED (0x0c << 2) /* 1100 */ +#define L_PTE_MT_DEV_WC (0x09 << 2) /* 1001 */ +#define L_PTE_MT_DEV_CACHED (0x0b << 2) /* 1011 */ +#define L_PTE_MT_MASK (0x0f << 2) + #ifndef __ASSEMBLY__ /* @@ -180,23 +196,30 @@ extern void __pgd_error(const char *file, int line, unsigned long val); * as well as any architecture dependent bits like global/ASID and SMP * shared mapping bits. */ -#define _L_PTE_DEFAULT L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_CACHEABLE | L_PTE_BUFFERABLE -#define _L_PTE_READ L_PTE_USER | L_PTE_EXEC +#define _L_PTE_DEFAULT L_PTE_PRESENT | L_PTE_YOUNG extern pgprot_t pgprot_user; extern pgprot_t pgprot_kernel; -#define PAGE_NONE pgprot_user -#define PAGE_COPY __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ) -#define PAGE_SHARED __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ | \ - L_PTE_WRITE) -#define PAGE_READONLY __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ) -#define PAGE_KERNEL pgprot_kernel - -#define __PAGE_NONE __pgprot(_L_PTE_DEFAULT) -#define __PAGE_COPY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ) -#define __PAGE_SHARED __pgprot(_L_PTE_DEFAULT | _L_PTE_READ | L_PTE_WRITE) -#define __PAGE_READONLY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ) +#define _MOD_PROT(p, b) __pgprot(pgprot_val(p) | (b)) + +#define PAGE_NONE pgprot_user +#define PAGE_SHARED _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_WRITE) +#define PAGE_SHARED_EXEC _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_WRITE | L_PTE_EXEC) +#define PAGE_COPY _MOD_PROT(pgprot_user, L_PTE_USER) +#define PAGE_COPY_EXEC _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_EXEC) +#define PAGE_READONLY _MOD_PROT(pgprot_user, L_PTE_USER) +#define PAGE_READONLY_EXEC _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_EXEC) +#define PAGE_KERNEL pgprot_kernel +#define PAGE_KERNEL_EXEC _MOD_PROT(pgprot_kernel, L_PTE_EXEC) + +#define __PAGE_NONE __pgprot(_L_PTE_DEFAULT) +#define __PAGE_SHARED __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_WRITE) +#define __PAGE_SHARED_EXEC __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_WRITE | L_PTE_EXEC) +#define __PAGE_COPY __pgprot(_L_PTE_DEFAULT | L_PTE_USER) +#define __PAGE_COPY_EXEC __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_EXEC) +#define __PAGE_READONLY __pgprot(_L_PTE_DEFAULT | L_PTE_USER) +#define __PAGE_READONLY_EXEC __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_EXEC) #endif /* __ASSEMBLY__ */ @@ -212,19 +235,19 @@ extern pgprot_t pgprot_kernel; #define __P001 __PAGE_READONLY #define __P010 __PAGE_COPY #define __P011 __PAGE_COPY -#define __P100 __PAGE_READONLY -#define __P101 __PAGE_READONLY -#define __P110 __PAGE_COPY -#define __P111 __PAGE_COPY +#define __P100 __PAGE_READONLY_EXEC +#define __P101 __PAGE_READONLY_EXEC +#define __P110 __PAGE_COPY_EXEC +#define __P111 __PAGE_COPY_EXEC #define __S000 __PAGE_NONE #define __S001 __PAGE_READONLY #define __S010 __PAGE_SHARED #define __S011 __PAGE_SHARED -#define __S100 __PAGE_READONLY -#define __S101 __PAGE_READONLY -#define __S110 __PAGE_SHARED -#define __S111 __PAGE_SHARED +#define __S100 __PAGE_READONLY_EXEC +#define __S101 __PAGE_READONLY_EXEC +#define __S110 __PAGE_SHARED_EXEC +#define __S111 __PAGE_SHARED_EXEC #ifndef __ASSEMBLY__ /* @@ -286,8 +309,10 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; } /* * Mark the prot value as uncacheable and unbufferable. */ -#define pgprot_noncached(prot) __pgprot(pgprot_val(prot) & ~(L_PTE_CACHEABLE | L_PTE_BUFFERABLE)) -#define pgprot_writecombine(prot) __pgprot(pgprot_val(prot) & ~L_PTE_CACHEABLE) +#define pgprot_noncached(prot) \ + __pgprot((pgprot_val(prot) & ~L_PTE_MT_MASK) | L_PTE_MT_UNCACHED) +#define pgprot_writecombine(prot) \ + __pgprot((pgprot_val(prot) & ~L_PTE_MT_MASK) | L_PTE_MT_BUFFERABLE) #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_present(pmd) (pmd_val(pmd)) |