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path: root/package/libs/libunwind

	Commit message (Collapse)	Author	Age	Files	Lines
*	libunwind: fix build with musl on PPC	Matthias Schiffer	2018-02-25	1	-0/+383
| | | | | | | | | | |	Works around two incompatiblities between glibc and (POSIX-compliant) musl: - missing register definitions from asm/ptrace.h - non-POSIX-compliant ucontext_t on PPC32 with glibc Compile tested on mpc85xx. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
*	bunwind: build for ARM64	Hauke Mehrtens	2018-02-10	1	-1/+1
| | | | | | |	ARM64 is supported by libunwind since some versions, allow building it for aarch64. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
*	libunwind: enable build for arm	Maxim Gorbachyov	2018-01-27	1	-1/+1
| | | | | |	Tested with perf on mvebu. Signed-off-by: Maxim Gorbachyov <maxim.gorbachyov@gmail.com>
*	add PKG_CPE_ID ids to package and tools	Alexander Couzens	2017-11-17	1	-0/+1
| | | | | | | | | | |	CPE ids helps to tracks CVE in packages. https://cpe.mitre.org/specification/ Thanks to swalker for CPE to package mapping and keep tracking CVEs. Acked-by: Jo-Philipp Wich <jo@mein.io> Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
*	libunwind: disable building with ssp	Yousong Zhou	2017-11-06	1	-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | |	If we enable -fstack-protector while building libunwind, function __stack_chk_fail_local will be referred to for i386 and powerpc32 arches. This will cause link failure because the default gcc build specs says no link_ssp if -nostdlib is given. The error message: OpenWrt-libtool: link: ccache_cc -shared -fPIC -DPIC .libs/os-linux.o mi/.libs/init.o mi/.libs/flush_cache.o mi/.libs/mempool.o mi/.libs/strerror.o x86/.libs/is_fpreg.o x86/.libs/regname.o x86/.libs/Los-linux.o mi/.libs/backtrace.o mi/.libs/dyn-cancel.o mi/.libs/dyn-info-list.o mi/.libs/dyn-register.o mi/.libs/Ldyn-extract.o mi/.libs/Lfind_dynamic_proc_info.o mi/.libs/Lget_accessors.o mi/.libs/Lget_proc_info_by_ip.o mi/.libs/Lget_proc_name.o mi/.libs/Lput_dynamic_unwind_info.o mi/.libs/Ldestroy_addr_space.o mi/.libs/Lget_reg.o mi/.libs/Lset_reg.o mi/.libs/Lget_fpreg.o mi/.libs/Lset_fpreg.o mi/.libs/Lset_caching_policy.o x86/.libs/Lcreate_addr_space.o x86/.libs/Lget_save_loc.o x86/.libs/Lglobal.o x86/.libs/Linit.o x86/.libs/Linit_local.o x86/.libs/Linit_remote.o x86/.libs/Lget_proc_info.o x86/.libs/Lregs.o x86/.libs/Lresume.o x86/.libs/Lstep.o x86/.libs/getcontext-linux.o -Wl,--whole-archive ./.libs/libunwind-dwarf-local.a ./.libs/libunwind-elf32.a -Wl,--no-whole-archive -L/var/lib/bbmnt/buildbot/slaves/dave-builder/i386_i486/build/sdk/staging_dir/target-i386_i486_musl-1.1.16/usr/lib -L/var/lib/bbmnt/buildbot/slaves/dave-builder/i386_i486/build/sdk/staging_dir/target-i386_i486_musl-1.1.16/lib -L/var/lib/bbmnt/buildbot/slaves/dave-builder/i386_i486/build/sdk/staging_dir/toolchain-i386_i486_gcc-5.4.0_musl-1.1.16/usr/lib -L/var/lib/bbmnt/buildbot/slaves/dave-builder/i386_i486/build/sdk/staging_dir/toolchain-i386_i486_gcc-5.4.0_musl-1.1.16/lib -lc -lgcc -Os -march=i486 -fstack-protector -Wl,-z -Wl,now -Wl,-z -Wl,relro -nostartfiles -nostdlib -Wl,-soname -Wl,libunwind.so.8 -o .libs/libunwind.so.8.0.1 .libs/os-linux.o: In function `_Ux86_get_elf_image': os-linux.c:(.text+0x588): undefined reference to `__stack_chk_fail_local' x86/.libs/Lregs.o: In function `_ULx86_access_fpreg': Lregs.c:(.text+0x25b): undefined reference to `__stack_chk_fail_local' x86/.libs/Lresume.o: In function `_ULx86_resume': Lresume.c:(.text+0xdc): undefined reference to `__stack_chk_fail_local' collect2: error: ld returned 1 exit status Makefile:2249: recipe for target 'libunwind.la' failed The snippet from gcc -dumpspecs %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}} Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
*	libunwind: update to version 1.2.1	Yousong Zhou	2017-06-19	2	-48/+2
| | | | | | | | | |	Changes since 1.2 a77b0cd Bump version to v1.2.1 5f354cb mips/tilegx: Add missing unwind_i.h header file 620d1c3 Add aarch64 getcontext functionality. Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
*	libunwind: update to 1.2	Yousong Zhou	2017-05-22	3	-19/+58
| | | | | | | | | | |	Addresses CVE-2015-3239: Off-by-one error in the dwarf_to_unw_regnum function in include/dwarf_i.h in libunwind 1.1 allows local users to have unspecified impact via invalid dwarf opcodes. Upstream stable-v1.2 fixed the missing unwind_i.h issue but no new tarball is released yet Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
*	treewide: clean up download hashes	Felix Fietkau	2016-12-16	1	-1/+1
| | | | | |	Replace *MD5SUM with *HASH, replace MD5 hashes with SHA256 Signed-off-by: Felix Fietkau <nbd@nbd.name>
*	libunwind: use url alias	diizzyy	2016-09-27	1	-1/+1
| | | | | |	Use alias instead of hardcoded URL Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
*	libunwind: initial version 1.1	Yousong Zhou	2016-06-13	4	-0/+141
	The package Makefile was based on work at link [1] with the following changes 1. Disable minidebuginfo support thus no dependency on liblzma 2. Add 2 patches for building against musl-libc and building with mips16 enabled 3. Add LICENSE and DEPENDS info, etc. [1] https://github.com/rpi-openwrt/rpi-packages/tree/master/libs/libunwind Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

generated by cgit v1.2.3 (git 2.25.1) at 2025-03-09 13:13:54 +0000

#ifndef __i386_UACCESS_H
#define __i386_UACCESS_H

/*
 * User space memory access functions
 */
#include <xen/config.h>
#include <xen/errno.h>
#include <xen/prefetch.h>
#include <xen/string.h>
#include <xen/sched.h>

/* No user-pointer checking. */
#define __user
#define __chk_user_ptr(_p) ((void)0)

#define VERIFY_READ 0
#define VERIFY_WRITE 1

/*
 * movsl can be slow when source and dest are not both 8-byte aligned
 */
#ifdef CONFIG_X86_INTEL_USERCOPY
extern struct movsl_mask {
	int mask;
} __cacheline_aligned movsl_mask;
#endif

#define __addr_ok(addr) ((unsigned long)(addr) < HYPERVISOR_VIRT_START)

/*
 * Test whether a block of memory is a valid user space address.
 * Returns 0 if the range is valid, nonzero otherwise.
 *
 * This is equivalent to the following test:
 * (u33)addr + (u33)size >= (u33)HYPERVISOR_VIRT_START
 *
 * This needs 33-bit arithmetic. We have a carry...
 */
#define __range_ok(addr,size) ({ \
	unsigned long flag,sum; \
	__chk_user_ptr(addr); \
	asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
		:"=&r" (flag), "=r" (sum) \
		:"1" (addr),"g" ((int)(size)),"r" (HYPERVISOR_VIRT_START)); \
	flag; })

/**
 * access_ok: - Checks if a user space pointer is valid
 * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE.  Note that
 *        %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
 *        to write to a block, it is always safe to read from it.
 * @addr: User space pointer to start of block to check
 * @size: Size of block to check
 *
 * Context: User context only.  This function may sleep.
 *
 * Checks if a pointer to a block of memory in user space is valid.
 *
 * Returns true (nonzero) if the memory block may be valid, false (zero)
 * if it is definitely invalid.
 *
 * Note that, depending on architecture, this function probably just
 * checks that the pointer is in the user space range - after calling
 * this function, memory access functions may still return -EFAULT.
 */
#define access_ok(type,addr,size) (likely(__range_ok(addr,size) == 0))

/*
 * The exception table consists of pairs of addresses: the first is the
 * address of an instruction that is allowed to fault, and the second is
 * the address at which the program should continue.  No registers are
 * modified, so it is entirely up to the continuation code to figure out
 * what to do.
 *
 * All the routines below use bits of fixup code that are out of line
 * with the main instruction path.  This means when everything is well,
 * we don't even have to jump over them.  Further, they do not intrude
 * on our cache or tlb entries.
 */

struct exception_table_entry
{
	unsigned long insn, fixup;
};

extern unsigned long search_exception_table(unsigned long);

/**
 * get_user: - Get a simple variable from user space.
 * @x:   Variable to store result.
 * @ptr: Source address, in user space.
 *
 * Context: User context only.  This function may sleep.
 *
 * This macro copies a single simple variable from user space to kernel
 * space.  It supports simple types like char and int, but not larger
 * data types like structures or arrays.
 *
 * @ptr must have pointer-to-simple-variable type, and the result of
 * dereferencing @ptr must be assignable to @x without a cast.
 *
 * Returns zero on success, or -EFAULT on error.
 * On error, the variable @x is set to zero.
 */
#define get_user(x,ptr)	\
  __get_user_check((x),(ptr),sizeof(*(ptr)))

extern void __put_user_bad(void);

/**
 * put_user: - Write a simple value into user space.
 * @x:   Value to copy to user space.
 * @ptr: Destination address, in user space.
 *
 * Context: User context only.  This function may sleep.
 *
 * This macro copies a single simple value from kernel space to user
 * space.  It supports simple types like char and int, but not larger
 * data types like structures or arrays.
 *
 * @ptr must have pointer-to-simple-variable type, and @x must be assignable
 * to the result of dereferencing @ptr.
 *
 * Returns zero on success, or -EFAULT on error.
 */
#define put_user(x,ptr)							\
  __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))


/**
 * __get_user: - Get a simple variable from user space, with less checking.
 * @x:   Variable to store result.
 * @ptr: Source address, in user space.
 *
 * Context: User context only.  This function may sleep.
 *
 * This macro copies a single simple variable from user space to kernel
 * space.  It supports simple types like char and int, but not larger
 * data types like structures or arrays.
 *
 * @ptr must have pointer-to-simple-variable type, and the result of
 * dereferencing @ptr must be assignable to @x without a cast.
 *
 * Caller must check the pointer with access_ok() before calling this
 * function.
 *
 * Returns zero on success, or -EFAULT on error.
 * On error, the variable @x is set to zero.
 */
#define __get_user(x,ptr) \
  __get_user_nocheck((x),(ptr),sizeof(*(ptr)))


/**
 * __put_user: - Write a simple value into user space, with less checking.
 * @x:   Value to copy to user space.
 * @ptr: Destination address, in user space.
 *
 * Context: User context only.  This function may sleep.
 *
 * This macro copies a single simple value from kernel space to user
 * space.  It supports simple types like char and int, but not larger
 * data types like structures or arrays.
 *
 * @ptr must have pointer-to-simple-variable type, and @x must be assignable
 * to the result of dereferencing @ptr.
 *
 * Caller must check the pointer with access_ok() before calling this
 * function.
 *
 * Returns zero on success, or -EFAULT on error.
 */
#define __put_user(x,ptr) \
  __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))

#define __put_user_nocheck(x,ptr,size)				\
({								\
	long __pu_err;						\
	__put_user_size((x),(ptr),(size),__pu_err,-EFAULT);	\
	__pu_err;						\
})

#define __put_user_check(x,ptr,size)					\
({									\
	long __pu_err = -EFAULT;					\
	__typeof__(*(ptr)) __user *__pu_addr = (ptr);			\
	if (__addr_ok(__pu_addr))					\
		__put_user_size((x),__pu_addr,(size),__pu_err,-EFAULT);	\
	__pu_err;							\
})							

#define __put_user_u64(x, addr, err)				\
	__asm__ __volatile__(					\
		"1:	movl %%eax,0(%2)\n"			\
		"2:	movl %%edx,4(%2)\n"			\
		"3:\n"						\
		".section .fixup,\"ax\"\n"			\
		"4:	movl %3,%0\n"				\
		"	jmp 3b\n"				\
		".previous\n"					\
		".section __ex_table,\"a\"\n"			\
		"	.align 4\n"				\
		"	.long 1b,4b\n"				\
		"	.long 2b,4b\n"				\
		".previous"					\
		: "=r"(err)					\
		: "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))

#ifdef CONFIG_X86_WP_WORKS_OK

#define __put_user_size(x,ptr,size,retval,errret)			\
do {									\
	retval = 0;							\
	__chk_user_ptr(ptr);						\
	switch (size) {							\
	case 1: __put_user_asm(x,ptr,retval,"b","b","iq",errret);break;	\
	case 2: __put_user_asm(x,ptr,retval,"w","w","ir",errret);break; \
	case 4: __put_user_asm(x,ptr,retval,"l","","ir",errret); break;	\
	case 8: __put_user_u64((__typeof__(*ptr))(x),ptr,retval); break;\
	  default: __put_user_bad();					\
	}								\
} while (0)

#else

#define __put_user_size(x,ptr,size,retval,errret)			\
do {									\
	__typeof__(*(ptr)) __pus_tmp = x;				\
	retval = 0;							\
									\
	if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0))	\
		retval = errret;					\
} while (0)

#endif
struct __large_struct { unsigned long buf[100]; };
#define __m(x) (*(struct __large_struct *)(x))

/*
 * Tell gcc we read from memory instead of writing: this is because
 * we do not write to any memory gcc knows about, so there are no
 * aliasing issues.
 */
#define __put_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
	__asm__ __volatile__(						\
		"1:	mov"itype" %"rtype"1,%2\n"			\
		"2:\n"							\
		".section .fixup,\"ax\"\n"				\
		"3:	movl %3,%0\n"					\
		"	jmp 2b\n"					\
		".previous\n"						\
		".section __ex_table,\"a\"\n"				\
		"	.align 4\n"					\
		"	.long 1b,3b\n"					\
		".previous"						\
		: "=r"(err)						\
		: ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))


#define __get_user_nocheck(x,ptr,size)				\
({								\
	long __gu_err, __gu_val;				\
	__get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);\
	(x) = (__typeof__(*(ptr)))__gu_val;			\
	__gu_err;						\
})

#define __get_user_check(x,ptr,size)					\
({									\
	long __gu_err, __gu_val;					\
	__typeof__(*(ptr)) __user *__gu_addr = (ptr);			\
	__get_user_size(__gu_val,__gu_addr,(size),__gu_err,-EFAULT);	\
	(x) = (__typeof__(*(ptr)))__gu_val;				\
	if (!__addr_ok(__gu_addr)) __gu_err = -EFAULT;			\
	__gu_err;							\
})							

extern long __get_user_bad(void);

#define __get_user_size(x,ptr,size,retval,errret)			\
do {									\
	retval = 0;							\
	__chk_user_ptr(ptr);						\
	switch (size) {							\
	case 1: __get_user_asm(x,ptr,retval,"b","b","=q",errret);break;	\
	case 2: __get_user_asm(x,ptr,retval,"w","w","=r",errret);break;	\
	case 4: __get_user_asm(x,ptr,retval,"l","","=r",errret);break;	\
	default: (x) = __get_user_bad();				\
	}								\
} while (0)

#define __get_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
	__asm__ __volatile__(						\
		"1:	mov"itype" %2,%"rtype"1\n"			\
		"2:\n"							\
		".section .fixup,\"ax\"\n"				\
		"3:	movl %3,%0\n"					\
		"	xor"itype" %"rtype"1,%"rtype"1\n"		\
		"	jmp 2b\n"					\
		".previous\n"						\
		".section __ex_table,\"a\"\n"				\
		"	.align 4\n"					\
		"	.long 1b,3b\n"					\
		".previous"						\
		: "=r"(err), ltype (x)					\
		: "m"(__m(addr)), "i"(errret), "0"(err))


unsigned long __copy_to_user_ll(void __user *to, const void *from, unsigned long n);
unsigned long __copy_from_user_ll(void *to, const void __user *from, unsigned long n);

/*
 * Here we special-case 1, 2 and 4-byte copy_*_user invocations.  On a fault
 * we return the initial request size (1, 2 or 4), as copy_*_user should do.
 * If a store crosses a page boundary and gets a fault, the x86 will not write
 * anything, so this is accurate.
 */

/**
 * __copy_to_user: - Copy a block of data into user space, with less checking.
 * @to:   Destination address, in user space.
 * @from: Source address, in kernel space.
 * @n:    Number of bytes to copy.
 *
 * Context: User context only.  This function may sleep.
 *
 * Copy data from kernel space to user space.  Caller must check
 * the specified block with access_ok() before calling this function.
 *
 * Returns number of bytes that could not be copied.
 * On success, this will be zero.
 */
static always_inline unsigned long
__copy_to_user(void __user *to, const void *from, unsigned long n)
{
	if (__builtin_constant_p(n)) {
		unsigned long ret;

		switch (n) {
		case 1:
			__put_user_size(*(u8 *)from, (u8 __user *)to, 1, ret, 1);
			return ret;
		case 2:
			__put_user_size(*(u16 *)from, (u16 __user *)to, 2, ret, 2);
			return ret;
		case 4:
			__put_user_size(*(u32 *)from, (u32 __user *)to, 4, ret, 4);
			return ret;
		}
	}
	return __copy_to_user_ll(to, from, n);
}

/**
 * __copy_from_user: - Copy a block of data from user space, with less checking.
 * @to:   Destination address, in kernel space.
 * @from: Source address, in user space.
 * @n:    Number of bytes to copy.
 *
 * Context: User context only.  This function may sleep.
 *
 * Copy data from user space to kernel space.  Caller must check
 * the specified block with access_ok() before calling this function.
 *
 * Returns number of bytes that could not be copied.
 * On success, this will be zero.
 *
 * If some data could not be copied, this function will pad the copied
 * data to the requested size using zero bytes.
 */
static always_inline unsigned long
__copy_from_user(void *to, const void __user *from, unsigned long n)
{
	if (__builtin_constant_p(n)) {
		unsigned long ret;

		switch (n) {
		case 1:
			__get_user_size(*(u8 *)to, from, 1, ret, 1);
			return ret;
		case 2:
			__get_user_size(*(u16 *)to, from, 2, ret, 2);
			return ret;
		case 4:
			__get_user_size(*(u32 *)to, from, 4, ret, 4);
			return ret;
		}
	}
	return __copy_from_user_ll(to, from, n);
}

unsigned long copy_to_user(void __user *to, const void *from, unsigned long n);
unsigned long copy_from_user(void *to,
			const void __user *from, unsigned long n);
long strncpy_from_user(char *dst, const char __user *src, long count);
long __strncpy_from_user(char *dst, const char __user *src, long count);

/**
 * strlen_user: - Get the size of a string in user space.
 * @str: The string to measure.
 *
 * Context: User context only.  This function may sleep.
 *
 * Get the size of a NUL-terminated string in user space.
 *
 * Returns the size of the string INCLUDING the terminating NUL.
 * On exception, returns 0.
 *
 * If there is a limit on the length of a valid string, you may wish to
 * consider using strnlen_user() instead.
 */
#define strlen_user(str) strnlen_user(str, ~0UL >> 1)

long strnlen_user(const char __user *str, long n);
unsigned long clear_user(void __user *mem, unsigned long len);
unsigned long __clear_user(void __user *mem, unsigned long len);

#endif /* __i386_UACCESS_H */