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-rw-r--r--libc/sysdeps/linux/arm/Makefile.arch9
-rw-r--r--libc/sysdeps/linux/arm/bits/arm_asm.h9
-rw-r--r--libc/sysdeps/linux/arm/bits/huge_val.h4
-rw-r--r--libc/sysdeps/linux/arm/crtn.S2
-rw-r--r--libc/sysdeps/linux/arm/sysdep.h1
-rw-r--r--libc/sysdeps/linux/arm/unwind.h279
6 files changed, 297 insertions, 7 deletions
diff --git a/libc/sysdeps/linux/arm/Makefile.arch b/libc/sysdeps/linux/arm/Makefile.arch
index b53c539bf..14279e0d7 100644
--- a/libc/sysdeps/linux/arm/Makefile.arch
+++ b/libc/sysdeps/linux/arm/Makefile.arch
@@ -24,7 +24,12 @@ ifeq ($(UCLIBC_HAS_ADVANCED_REALTIME),y)
CSRC += posix_fadvise.c posix_fadvise64.c
endif
-ifeq ($(CONFIG_ARM_EABI),y)
+# Is our compiler set up for EABI ?
+IS_EABI:=$(shell $(CC) $(CFLAGS) -x c - -E -dM </dev/null 2>/dev/null \
+ |sed -r -e '/^\#[[:space:]]*define[[:space:]]+__ARM_EABI__([[:space:]]+1)?$$/!d; s/.+/y/;' \
+ )
+
+ifeq ($(IS_EABI),y)
CSRC += aeabi_assert.c aeabi_atexit.c aeabi_errno_addr.c \
aeabi_localeconv.c aeabi_memclr.c aeabi_memcpy.c \
aeabi_memmove.c aeabi_memset.c find_exidx.c
@@ -37,7 +42,7 @@ else
CSRC += syscall.c
endif
-ifeq ($(CONFIG_ARM_EABI),y)
+ifeq ($(IS_EABI),y)
libc-static-y += $(ARCH_OUT)/aeabi_lcsts.o $(ARCH_OUT)/aeabi_math.o \
$(ARCH_OUT)/aeabi_sighandlers.o
libc-nonshared-y += $(ARCH_OUT)/aeabi_lcsts.os $(ARCH_OUT)/aeabi_math.os \
diff --git a/libc/sysdeps/linux/arm/bits/arm_asm.h b/libc/sysdeps/linux/arm/bits/arm_asm.h
index 1d87df6eb..921c9a3c9 100644
--- a/libc/sysdeps/linux/arm/bits/arm_asm.h
+++ b/libc/sysdeps/linux/arm/bits/arm_asm.h
@@ -24,5 +24,12 @@
#define THUMB1_ONLY 1
#endif
-#endif /* _ARM_ASM_H */
+#if defined(__USE_BX__)
+# if ( defined (__ARM_ARCH_2__) || defined (__ARM_ARCH_3__) \
+ || defined (__ARM_ARCH_3M__) || defined (__ARM_ARCH_4__) \
+ )
+# error Use of BX was requested, but is not available on the target processor.
+# endif /* ARCH level */
+#endif /* __USE_BX__ */
+#endif /* _ARM_ASM_H */
diff --git a/libc/sysdeps/linux/arm/bits/huge_val.h b/libc/sysdeps/linux/arm/bits/huge_val.h
index a215f3c0b..745e0bbd5 100644
--- a/libc/sysdeps/linux/arm/bits/huge_val.h
+++ b/libc/sysdeps/linux/arm/bits/huge_val.h
@@ -32,7 +32,7 @@
# define HUGE_VAL (__extension__ 0x1.0p2047)
#elif defined __GNUC__
-#ifndef __CONFIG_ARM_EABI__
+#ifndef __ARM_EABI__
# define HUGE_VAL \
(__extension__ \
((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
@@ -50,7 +50,7 @@
typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
-#ifndef __CONFIG_ARM_EABI__
+#ifndef __ARM_EABI__
# if __BYTE_ORDER == __BIG_ENDIAN
# define __HUGE_VAL_bytes { 0, 0, 0, 0, 0x7f, 0xf0, 0, 0 }
# endif
diff --git a/libc/sysdeps/linux/arm/crtn.S b/libc/sysdeps/linux/arm/crtn.S
index de01b38dc..a4752c186 100644
--- a/libc/sysdeps/linux/arm/crtn.S
+++ b/libc/sysdeps/linux/arm/crtn.S
@@ -15,7 +15,6 @@
.arm
ldmdb fp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
#endif
- .size _init, .-_init
.section .fini
.global _fini
@@ -29,7 +28,6 @@
.arm
ldmdb fp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
#endif
- .size _fini, .-_fini
@ In fact this is modified to 3.4.4
.ident "GCC: (GNU) 3.3.2 20031005 (Debian prerelease)"
diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h
index 013f88cdd..e498695be 100644
--- a/libc/sysdeps/linux/arm/sysdep.h
+++ b/libc/sysdeps/linux/arm/sysdep.h
@@ -21,6 +21,7 @@
#define _LINUX_ARM_SYSDEP_H 1
#include <common/sysdep.h>
+#include <bits/arm_asm.h>
#include <sys/syscall.h>
/* For Linux we can use the system call table in the header file
diff --git a/libc/sysdeps/linux/arm/unwind.h b/libc/sysdeps/linux/arm/unwind.h
new file mode 100644
index 000000000..eeb9cf8b6
--- /dev/null
+++ b/libc/sysdeps/linux/arm/unwind.h
@@ -0,0 +1,279 @@
+/* Header file for the ARM EABI unwinder
+ Copyright (C) 2003, 2004, 2005, 2009 Free Software Foundation, Inc.
+ Contributed by Paul Brook
+
+ This file is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+
+ In addition to the permissions in the GNU General Public License, the
+ Free Software Foundation gives you unlimited permission to link the
+ compiled version of this file into combinations with other programs,
+ and to distribute those combinations without any restriction coming
+ from the use of this file. (The General Public License restrictions
+ do apply in other respects; for example, they cover modification of
+ the file, and distribution when not linked into a combine
+ executable.)
+
+ This file is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; see the file COPYING. If not, write to
+ the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* Language-independent unwinder header public defines. This contains both
+ ABI defined objects, and GNU support routines. */
+
+#ifndef UNWIND_ARM_H
+#define UNWIND_ARM_H
+
+#define __ARM_EABI_UNWINDER__ 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
+ typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
+ typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
+ typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__)));
+ typedef _Unwind_Word _uw;
+ typedef unsigned _uw64 __attribute__((mode(__DI__)));
+ typedef unsigned _uw16 __attribute__((mode(__HI__)));
+ typedef unsigned _uw8 __attribute__((mode(__QI__)));
+
+ typedef enum
+ {
+ _URC_OK = 0, /* operation completed successfully */
+ _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+ _URC_END_OF_STACK = 5,
+ _URC_HANDLER_FOUND = 6,
+ _URC_INSTALL_CONTEXT = 7,
+ _URC_CONTINUE_UNWIND = 8,
+ _URC_FAILURE = 9 /* unspecified failure of some kind */
+ }
+ _Unwind_Reason_Code;
+
+ typedef enum
+ {
+ _US_VIRTUAL_UNWIND_FRAME = 0,
+ _US_UNWIND_FRAME_STARTING = 1,
+ _US_UNWIND_FRAME_RESUME = 2,
+ _US_ACTION_MASK = 3,
+ _US_FORCE_UNWIND = 8,
+ _US_END_OF_STACK = 16
+ }
+ _Unwind_State;
+
+ /* Provided only for for compatibility with existing code. */
+ typedef int _Unwind_Action;
+#define _UA_SEARCH_PHASE 1
+#define _UA_CLEANUP_PHASE 2
+#define _UA_HANDLER_FRAME 4
+#define _UA_FORCE_UNWIND 8
+#define _UA_END_OF_STACK 16
+#define _URC_NO_REASON _URC_OK
+
+ typedef struct _Unwind_Control_Block _Unwind_Control_Block;
+ typedef struct _Unwind_Context _Unwind_Context;
+ typedef _uw _Unwind_EHT_Header;
+
+
+ /* UCB: */
+
+ struct _Unwind_Control_Block
+ {
+#ifdef _LIBC
+ /* For the benefit of code which assumes this is a scalar. All
+ glibc ever does is clear it. */
+ _uw64 exception_class;
+#else
+ char exception_class[8];
+#endif
+ void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *);
+ /* Unwinder cache, private fields for the unwinder's use */
+ struct
+ {
+ _uw reserved1; /* Forced unwind stop fn, 0 if not forced */
+ _uw reserved2; /* Personality routine address */
+ _uw reserved3; /* Saved callsite address */
+ _uw reserved4; /* Forced unwind stop arg */
+ _uw reserved5;
+ }
+ unwinder_cache;
+ /* Propagation barrier cache (valid after phase 1): */
+ struct
+ {
+ _uw sp;
+ _uw bitpattern[5];
+ }
+ barrier_cache;
+ /* Cleanup cache (preserved over cleanup): */
+ struct
+ {
+ _uw bitpattern[4];
+ }
+ cleanup_cache;
+ /* Pr cache (for pr's benefit): */
+ struct
+ {
+ _uw fnstart; /* function start address */
+ _Unwind_EHT_Header *ehtp; /* pointer to EHT entry header word */
+ _uw additional; /* additional data */
+ _uw reserved1;
+ }
+ pr_cache;
+ long long int :0; /* Force alignment to 8-byte boundary */
+ };
+
+ /* Virtual Register Set*/
+
+ typedef enum
+ {
+ _UVRSC_CORE = 0, /* integer register */
+ _UVRSC_VFP = 1, /* vfp */
+ _UVRSC_FPA = 2, /* fpa */
+ _UVRSC_WMMXD = 3, /* Intel WMMX data register */
+ _UVRSC_WMMXC = 4 /* Intel WMMX control register */
+ }
+ _Unwind_VRS_RegClass;
+
+ typedef enum
+ {
+ _UVRSD_UINT32 = 0,
+ _UVRSD_VFPX = 1,
+ _UVRSD_FPAX = 2,
+ _UVRSD_UINT64 = 3,
+ _UVRSD_FLOAT = 4,
+ _UVRSD_DOUBLE = 5
+ }
+ _Unwind_VRS_DataRepresentation;
+
+ typedef enum
+ {
+ _UVRSR_OK = 0,
+ _UVRSR_NOT_IMPLEMENTED = 1,
+ _UVRSR_FAILED = 2
+ }
+ _Unwind_VRS_Result;
+
+ /* Frame unwinding state. */
+ typedef struct
+ {
+ /* The current word (bytes packed msb first). */
+ _uw data;
+ /* Pointer to the next word of data. */
+ _uw *next;
+ /* The number of bytes left in this word. */
+ _uw8 bytes_left;
+ /* The number of words pointed to by ptr. */
+ _uw8 words_left;
+ }
+ __gnu_unwind_state;
+
+ typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State,
+ _Unwind_Control_Block *, _Unwind_Context *);
+
+ _Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *, _Unwind_VRS_RegClass,
+ _uw, _Unwind_VRS_DataRepresentation,
+ void *);
+
+ _Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *, _Unwind_VRS_RegClass,
+ _uw, _Unwind_VRS_DataRepresentation,
+ void *);
+
+ _Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *, _Unwind_VRS_RegClass,
+ _uw, _Unwind_VRS_DataRepresentation);
+
+
+ /* Support functions for the PR. */
+#define _Unwind_Exception _Unwind_Control_Block
+ typedef char _Unwind_Exception_Class[8];
+
+ void * _Unwind_GetLanguageSpecificData (_Unwind_Context *);
+ _Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *);
+
+ /* These two should never be used. */
+ _Unwind_Ptr _Unwind_GetDataRelBase (_Unwind_Context *);
+ _Unwind_Ptr _Unwind_GetTextRelBase (_Unwind_Context *);
+
+ /* Interface functions: */
+ _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Control_Block *ucbp);
+ void __attribute__((noreturn)) _Unwind_Resume(_Unwind_Control_Block *ucbp);
+ _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (_Unwind_Control_Block *ucbp);
+
+ typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
+ (int, _Unwind_Action, _Unwind_Exception_Class,
+ _Unwind_Control_Block *, struct _Unwind_Context *, void *);
+ _Unwind_Reason_Code _Unwind_ForcedUnwind (_Unwind_Control_Block *,
+ _Unwind_Stop_Fn, void *);
+ _Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *);
+ void _Unwind_Complete(_Unwind_Control_Block *ucbp);
+ void _Unwind_DeleteException (_Unwind_Exception *);
+
+ _Unwind_Reason_Code __gnu_unwind_frame (_Unwind_Control_Block *,
+ _Unwind_Context *);
+ _Unwind_Reason_Code __gnu_unwind_execute (_Unwind_Context *,
+ __gnu_unwind_state *);
+
+ /* Decode an R_ARM_TARGET2 relocation. */
+ static inline _Unwind_Word
+ _Unwind_decode_target2 (_Unwind_Word ptr)
+ {
+ _Unwind_Word tmp;
+
+ tmp = *(_Unwind_Word *) ptr;
+ /* Zero values are always NULL. */
+ if (!tmp)
+ return 0;
+
+#if defined(linux) || defined(__NetBSD__)
+ /* Pc-relative indirect. */
+ tmp += ptr;
+ tmp = *(_Unwind_Word *) tmp;
+#elif defined(__symbian__)
+ /* Absolute pointer. Nothing more to do. */
+#else
+ /* Pc-relative pointer. */
+ tmp += ptr;
+#endif
+ return tmp;
+ }
+
+ static inline _Unwind_Word
+ _Unwind_GetGR (_Unwind_Context *context, int regno)
+ {
+ _uw val;
+ _Unwind_VRS_Get (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
+ return val;
+ }
+
+ /* Return the address of the instruction, not the actual IP value. */
+#define _Unwind_GetIP(context) \
+ (_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
+
+ static inline void
+ _Unwind_SetGR (_Unwind_Context *context, int regno, _Unwind_Word val)
+ {
+ _Unwind_VRS_Set (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
+ }
+
+ /* The dwarf unwinder doesn't understand arm/thumb state. We assume the
+ landing pad uses the same instruction set as the call site. */
+#define _Unwind_SetIP(context, val) \
+ _Unwind_SetGR (context, 15, val | (_Unwind_GetGR (context, 15) & 1))
+
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)
+ (struct _Unwind_Context *, void *);
+
+extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* defined UNWIND_ARM_H */