diff options
Diffstat (limited to 'arch/parisc/include/asm')
| -rw-r--r-- | arch/parisc/include/asm/dwarf.h | 23 | ||||
| -rw-r--r-- | arch/parisc/include/asm/linkage.h | 12 | ||||
| -rw-r--r-- | arch/parisc/include/asm/pgtable.h | 6 | ||||
| -rw-r--r-- | arch/parisc/include/asm/traps.h | 1 | ||||
| -rw-r--r-- | arch/parisc/include/asm/uaccess.h | 67 |
5 files changed, 85 insertions, 24 deletions
diff --git a/arch/parisc/include/asm/dwarf.h b/arch/parisc/include/asm/dwarf.h new file mode 100644 index 000000000000..8fe7d6b2cc42 --- /dev/null +++ b/arch/parisc/include/asm/dwarf.h @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2016 Helge Deller <deller@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_PARISC_DWARF_H +#define _ASM_PARISC_DWARF_H + +#ifdef __ASSEMBLY__ + +#define CFI_STARTPROC .cfi_startproc +#define CFI_ENDPROC .cfi_endproc +#define CFI_DEF_CFA .cfi_def_cfa +#define CFI_REGISTER .cfi_register +#define CFI_REL_OFFSET .cfi_rel_offset +#define CFI_UNDEFINED .cfi_undefined + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_PARISC_DWARF_H */ diff --git a/arch/parisc/include/asm/linkage.h b/arch/parisc/include/asm/linkage.h index 0b19a7242d0c..67e6b433d399 100644 --- a/arch/parisc/include/asm/linkage.h +++ b/arch/parisc/include/asm/linkage.h @@ -1,6 +1,8 @@ #ifndef __ASM_PARISC_LINKAGE_H #define __ASM_PARISC_LINKAGE_H +#include <asm/dwarf.h> + #ifndef __ALIGN #define __ALIGN .align 4 #define __ALIGN_STR ".align 4" @@ -10,6 +12,8 @@ * In parisc assembly a semicolon marks a comment while a * exclamation mark is used to separate independent lines. */ +#define ASM_NL ! + #ifdef __ASSEMBLY__ #define ENTRY(name) \ @@ -26,6 +30,14 @@ name: END(name) #endif +#define ENTRY_CFI(name) \ + ENTRY(name) ASM_NL\ + CFI_STARTPROC + +#define ENDPROC_CFI(name) \ + ENDPROC(name) ASM_NL\ + CFI_ENDPROC + #endif /* __ASSEMBLY__ */ #endif /* __ASM_PARISC_LINKAGE_H */ diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index 291cee28ccb6..c2c43f714684 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -83,10 +83,10 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr) printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e)) /* This is the size of the initially mapped kernel memory */ -#ifdef CONFIG_64BIT -#define KERNEL_INITIAL_ORDER 25 /* 1<<25 = 32MB */ +#if defined(CONFIG_64BIT) +#define KERNEL_INITIAL_ORDER 26 /* 1<<26 = 64MB */ #else -#define KERNEL_INITIAL_ORDER 24 /* 1<<24 = 16MB */ +#define KERNEL_INITIAL_ORDER 25 /* 1<<25 = 32MB */ #endif #define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER) diff --git a/arch/parisc/include/asm/traps.h b/arch/parisc/include/asm/traps.h index 5e953ab4530d..63670231f48a 100644 --- a/arch/parisc/include/asm/traps.h +++ b/arch/parisc/include/asm/traps.h @@ -11,6 +11,7 @@ void parisc_terminate(char *msg, struct pt_regs *regs, void die_if_kernel(char *str, struct pt_regs *regs, long err); /* mm/fault.c */ +const char *trap_name(unsigned long code); void do_page_fault(struct pt_regs *regs, unsigned long code, unsigned long address); #endif diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 0f59fd9ca205..9a2aee1b90fc 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -10,6 +10,8 @@ #include <asm-generic/uaccess-unaligned.h> #include <linux/bug.h> +#include <linux/string.h> +#include <linux/thread_info.h> #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -200,35 +202,58 @@ extern long lstrnlen_user(const char __user *, long); #define clear_user lclear_user #define __clear_user lclear_user -unsigned long copy_to_user(void __user *dst, const void *src, unsigned long len); -#define __copy_to_user copy_to_user -unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long len); -unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned long len); +unsigned long __must_check __copy_to_user(void __user *dst, const void *src, + unsigned long len); +unsigned long __must_check __copy_from_user(void *dst, const void __user *src, + unsigned long len); +unsigned long copy_in_user(void __user *dst, const void __user *src, + unsigned long len); #define __copy_in_user copy_in_user #define __copy_to_user_inatomic __copy_to_user #define __copy_from_user_inatomic __copy_from_user -extern void copy_from_user_overflow(void) -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS - __compiletime_error("copy_from_user() buffer size is not provably correct") -#else - __compiletime_warning("copy_from_user() buffer size is not provably correct") -#endif -; +extern void __compiletime_error("usercopy buffer size is too small") +__bad_copy_user(void); + +static inline void copy_user_overflow(int size, unsigned long count) +{ + WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); +} + +static __always_inline unsigned long __must_check +copy_from_user(void *to, const void __user *from, unsigned long n) +{ + int sz = __compiletime_object_size(to); + unsigned long ret = n; + + if (likely(sz < 0 || sz >= n)) { + check_object_size(to, n, false); + ret = __copy_from_user(to, from, n); + } else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); + else + __bad_copy_user(); + + if (unlikely(ret)) + memset(to + (n - ret), 0, ret); + + return ret; +} -static inline unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n) +static __always_inline unsigned long __must_check +copy_to_user(void __user *to, const void *from, unsigned long n) { - int sz = __compiletime_object_size(to); - int ret = -EFAULT; + int sz = __compiletime_object_size(from); - if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n)) - ret = __copy_from_user(to, from, n); - else - copy_from_user_overflow(); + if (likely(sz < 0 || sz >= n)) { + check_object_size(from, n, true); + n = __copy_to_user(to, from, n); + } else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); + else + __bad_copy_user(); - return ret; + return n; } struct pt_regs; |