Add CFI statements to ARM's assembly code.
This commit is contained in:
Thomas Schwinge
Joseph Myers
parent
cca1fbbc2f
commit
01b32e7361
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@ -1,3 +1,53 @@
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2010-03-26 Thomas Schwinge <thomas@codesourcery.com>
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* sysdeps/arm/configure.in: New file.
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* sysdeps/arm/configure: Generate.
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* sysdeps/arm/sysdep.h (ENTRY, END): Add CFI statements.
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* sysdeps/unix/arm/sysdep.S (__syscall_error): Likewise.
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* sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h
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(PSEUDO, DOCARGS_0, RESTORE_LR_0, DOCARGS_1, UNDOCARGS_1, DOCARGS_2)
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(UNDOCARGS_2, DOCARGS_3, UNDOCARGS_3, DOCARGS_4, UNDOCARGS_4)
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(DOCARGS_5, UNDOCARGS_5, RESTORE_LR_5, DOCARGS_6, UNDOCARGS_6):
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Likewise.
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[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
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* sysdeps/unix/sysv/linux/arm/eabi/sysdep.h (DO_CALL): Likewise.
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* sysdeps/unix/sysv/linux/arm/sysdep.h
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(POP_PC, SYSCALL_ERROR_HANDLER (__local_syscall_error))
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(DOARGS_5, UNDOARGS_5, DOARGS_6, UNDOARGS_6, DOARGS_7, UNDOARGS_7):
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Likewise.
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* sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S
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(__default_sa_restorer_v1, __default_sa_restorer_v2)
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(__default_rt_sa_restorer_v1, __default_rt_sa_restorer_v2): Add END
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statements.
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* sysdeps/unix/sysv/linux/arm/eabi/syscall.S (syscall): Add CFI
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statements.
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* sysdeps/arm/memcpy.S (memcpy): Add CFI statements.
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* sysdeps/arm/memmove.S (memmove): Likewise.
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* sysdeps/unix/sysv/linux/arm/eabi/mmap64.S (__mmap64): Add CFI
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statements.
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* sysdeps/unix/sysv/linux/arm/mmap.S (__mmap): Likewise.
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* sysdeps/arm/eabi/arm-mcount.S (__gnu_mcount_nc, _mcount): Add CFI
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statements.
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* sysdeps/arm/sysdep.h (CALL_MCOUNT): Likewise.
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* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c
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(_Unwind_Resume): Add CFI statements.
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* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-resume.c
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(_Unwind_Resume): Likewise.
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* sysdeps/arm/dl-trampoline.S (_dl_runtime_resolve)
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(_dl_runtime_profile) <CFI>: Only emit .debug_frame.
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* sysdeps/arm/eabi/__longjmp.S (__longjmp): Add CFI statements.
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* sysdeps/unix/sysv/linux/arm/eabi/____longjmp_chk.S (CALL_FAIL)
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(CHECK_SP): Likewise
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* sysdeps/unix/sysv/linux/arm/nptl/pt-vfork.S (SAVE_PID): Add CFI
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statements.
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* sysdeps/unix/sysv/linux/arm/nptl/vfork.S (SAVE_PID): Likewise.
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* sysdeps/unix/sysv/linux/arm/clone.S (__clone): Add CFI statements.
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* sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S (cfi_startproc):
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Redefine for signal frames.
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(__default_sa_restorer_v1, __default_sa_restorer_v2)
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(__default_rt_sa_restorer_v1, __default_rt_sa_restorer_v2): Add CFI
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statements.
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2010-02-10 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/arm/eabi/fegetenv.c, sysdeps/arm/fpu/fegetenv.c: Add
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@ -0,0 +1,33 @@
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# This file is generated from configure.in by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/arm.
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{ $as_echo "$as_me:$LINENO: checking whether the CFI directive .cfi_sections is supported" >&5
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$as_echo_n "checking whether the CFI directive .cfi_sections is supported... " >&6; }
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if test "${libc_cv_asm_cfi_directive_sections+set}" = set; then
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$as_echo_n "(cached) " >&6
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else
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cat > conftest.s <<EOF
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.text
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.cfi_sections .debug_frame, .eh_frame
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.cfi_startproc
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.cfi_endproc
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EOF
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if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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libc_cv_asm_cfi_directive_sections=yes
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else
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libc_cv_asm_cfi_directive_sections=no
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fi
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rm -f conftest*
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fi
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{ $as_echo "$as_me:$LINENO: result: $libc_cv_asm_cfi_directive_sections" >&5
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$as_echo "$libc_cv_asm_cfi_directive_sections" >&6; }
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if test $libc_cv_asm_cfi_directive_sections != yes; then
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{ { $as_echo "$as_me:$LINENO: error: need .cfi_sections in this configuration" >&5
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$as_echo "$as_me: error: need .cfi_sections in this configuration" >&2;}
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{ (exit 1); exit 1; }; }
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fi
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@ -0,0 +1,20 @@
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/arm.
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AC_CACHE_CHECK([whether the CFI directive .cfi_sections is supported],
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[libc_cv_asm_cfi_directive_sections],
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[cat > conftest.s <<EOF
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.text
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.cfi_sections .debug_frame, .eh_frame
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.cfi_startproc
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.cfi_endproc
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EOF
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if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_asm_cfi_directive_sections=yes
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else
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libc_cv_asm_cfi_directive_sections=no
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fi
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rm -f conftest*])
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if test $libc_cv_asm_cfi_directive_sections != yes; then
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AC_MSG_ERROR([need .cfi_sections in this configuration])
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fi
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@ -1,5 +1,5 @@
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/* PLT trampolines. ARM version.
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Copyright (C) 2005 Free Software Foundation, Inc.
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Copyright (C) 2005, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -29,6 +29,7 @@
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.text
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.globl _dl_runtime_resolve
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.type _dl_runtime_resolve, #function
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.cfi_sections .debug_frame
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cfi_startproc
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.align 2
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_dl_runtime_resolve:
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@ -77,6 +78,7 @@ _dl_runtime_resolve:
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#ifndef PROF
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.globl _dl_runtime_profile
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.type _dl_runtime_profile, #function
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.cfi_sections .debug_frame
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cfi_startproc
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.align 2
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_dl_runtime_profile:
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@ -1,5 +1,6 @@
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/* longjmp for ARM.
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Copyright (C) 1997, 1998, 2005, 2006, 2009 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 2005, 2006, 2009, 2010
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -31,10 +32,21 @@ ENTRY (__longjmp)
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moveq r0, #1 /* can't let setjmp() return zero! */
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#ifdef CHECK_SP
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ldr r4, [ip, #32]
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ldr r4, [ip, #32] /* jmpbuf's sp */
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cfi_undefined (r4)
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CHECK_SP (r4)
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#endif
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LOADREGS(ia, ip!, {v1-v6, sl, fp, sp, lr})
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cfi_restore (v1)
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cfi_restore (v2)
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cfi_restore (v3)
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cfi_restore (v4)
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cfi_restore (v5)
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cfi_restore (v6)
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cfi_restore (sl)
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cfi_restore (fp)
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cfi_restore (sp)
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cfi_restore (lr)
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#ifdef IS_IN_rtld
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ldr a2, 1f
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@ -1,5 +1,5 @@
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/* Implementation of profiling support. ARM EABI version.
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Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -46,10 +46,22 @@ func:
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ENTRY(__gnu_mcount_nc)
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push {r0, r1, r2, r3, lr}
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cfi_adjust_cfa_offset (20)
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cfi_rel_offset (r0, 0)
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cfi_rel_offset (r1, 4)
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cfi_rel_offset (r2, 8)
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cfi_rel_offset (r3, 12)
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cfi_rel_offset (lr, 16)
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bic r1, lr, #1
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ldr r0, [sp, #20]
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bl __mcount_internal
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pop {r0, r1, r2, r3, ip, lr}
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cfi_adjust_cfa_offset (-24)
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cfi_restore (r0)
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cfi_restore (r1)
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cfi_restore (r2)
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cfi_restore (r3)
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cfi_register (lr, ip)
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bx ip
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END(__gnu_mcount_nc)
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@ -59,6 +71,13 @@ END(__gnu_mcount_nc)
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ENTRY(_mcount)
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stmdb sp!, {r0, r1, r2, r3, fp, lr}
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cfi_adjust_cfa_offset (24)
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cfi_rel_offset (r0, 0)
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cfi_rel_offset (r1, 4)
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cfi_rel_offset (r2, 8)
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cfi_rel_offset (r3, 12)
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cfi_rel_offset (fp, 16)
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cfi_rel_offset (lr, 20)
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#ifdef __thumb2__
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movs r0, fp
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ittt ne
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@ -73,6 +92,13 @@ ENTRY(_mcount)
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ldmia sp!, {r0, r1, r2, r3, fp, pc}
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#else
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ldmia sp!, {r0, r1, r2, r3, fp, lr}
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cfi_adjust_cfa_offset (-24)
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cfi_restore (r0)
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cfi_restore (r1)
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cfi_restore (r2)
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cfi_restore (r3)
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cfi_restore (fp)
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cfi_restore (lr)
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bx lr
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#endif
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END(_mcount)
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@ -58,6 +58,11 @@
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ENTRY(memcpy)
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stmfd sp!, {r0, r4, lr}
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cfi_adjust_cfa_offset (12)
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cfi_rel_offset (r4, 4)
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cfi_rel_offset (lr, 8)
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cfi_remember_state
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subs r2, r2, #4
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blt 8f
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@ -69,6 +74,11 @@ ENTRY(memcpy)
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1: subs r2, r2, #(28)
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stmfd sp!, {r5 - r8}
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cfi_adjust_cfa_offset (16)
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cfi_rel_offset (r5, 0)
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cfi_rel_offset (r6, 4)
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cfi_rel_offset (r7, 8)
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cfi_rel_offset (r8, 12)
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blt 5f
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CALGN( ands ip, r1, #31 )
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@ -121,6 +131,11 @@ ENTRY(memcpy)
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CALGN( bcs 2b )
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7: ldmfd sp!, {r5 - r8}
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cfi_adjust_cfa_offset (-16)
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cfi_restore (r5)
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cfi_restore (r6)
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cfi_restore (r7)
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cfi_restore (r8)
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8: movs r2, r2, lsl #31
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ldrneb r3, [r1], #1
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@ -132,11 +147,16 @@ ENTRY(memcpy)
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#if defined (__ARM_ARCH_4T__) && defined(__THUMB_INTERWORK__)
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ldmfd sp!, {r0, r4, lr}
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cfi_adjust_cfa_offset (-12)
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cfi_restore (r4)
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cfi_restore (lr)
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bx lr
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#else
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ldmfd sp!, {r0, r4, pc}
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#endif
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cfi_restore_state
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9: rsb ip, ip, #4
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cmp ip, #2
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ldrgtb r3, [r1], #1
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@ -169,6 +189,12 @@ ENTRY(memcpy)
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CALGN( bcc 15f )
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11: stmfd sp!, {r5 - r9}
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cfi_adjust_cfa_offset (20)
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cfi_rel_offset (r5, 0)
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cfi_rel_offset (r6, 4)
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cfi_rel_offset (r7, 8)
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cfi_rel_offset (r8, 12)
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cfi_rel_offset (r9, 16)
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PLD( pld [r1, #0] )
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PLD( subs r2, r2, #96 )
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@ -203,6 +229,12 @@ ENTRY(memcpy)
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PLD( bge 13b )
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ldmfd sp!, {r5 - r9}
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cfi_adjust_cfa_offset (-20)
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cfi_restore (r5)
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cfi_restore (r6)
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cfi_restore (r7)
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cfi_restore (r8)
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cfi_restore (r9)
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14: ands ip, r2, #28
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beq 16f
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@ -73,6 +73,12 @@ ENTRY(memmove)
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#endif
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stmfd sp!, {r0, r4, lr}
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cfi_adjust_cfa_offset (12)
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cfi_rel_offset (r4, 4)
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cfi_rel_offset (lr, 8)
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cfi_remember_state
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add r1, r1, r2
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add r0, r0, r2
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subs r2, r2, #4
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@ -85,6 +91,11 @@ ENTRY(memmove)
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1: subs r2, r2, #(28)
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stmfd sp!, {r5 - r8}
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cfi_adjust_cfa_offset (16)
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cfi_rel_offset (r5, 0)
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cfi_rel_offset (r6, 4)
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cfi_rel_offset (r7, 8)
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cfi_rel_offset (r8, 12)
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blt 5f
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CALGN( ands ip, r1, #31 )
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@ -136,6 +147,11 @@ ENTRY(memmove)
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CALGN( bcs 2b )
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7: ldmfd sp!, {r5 - r8}
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cfi_adjust_cfa_offset (-16)
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cfi_restore (r5)
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cfi_restore (r6)
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cfi_restore (r7)
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cfi_restore (r8)
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8: movs r2, r2, lsl #31
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ldrneb r3, [r1, #-1]!
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@ -144,13 +160,19 @@ ENTRY(memmove)
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strneb r3, [r0, #-1]!
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strcsb r4, [r0, #-1]!
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strcsb ip, [r0, #-1]
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#if defined (__ARM_ARCH_4T__) && defined (__THUMB_INTERWORK__)
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ldmfd sp!, {r0, r4, lr}
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cfi_adjust_cfa_offset (-12)
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cfi_restore (r4)
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cfi_restore (lr)
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bx lr
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#else
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ldmfd sp!, {r0, r4, pc}
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#endif
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cfi_restore_state
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9: cmp ip, #2
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ldrgtb r3, [r1, #-1]!
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ldrgeb r4, [r1, #-1]!
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@ -182,6 +204,12 @@ ENTRY(memmove)
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CALGN( bcc 15f )
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11: stmfd sp!, {r5 - r9}
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cfi_adjust_cfa_offset (20)
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cfi_rel_offset (r5, 0)
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cfi_rel_offset (r6, 4)
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cfi_rel_offset (r7, 8)
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cfi_rel_offset (r8, 12)
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cfi_rel_offset (r9, 16)
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PLD( pld [r1, #-4] )
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PLD( subs r2, r2, #96 )
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@ -216,6 +244,12 @@ ENTRY(memmove)
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PLD( bge 13b )
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ldmfd sp!, {r5 - r9}
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cfi_adjust_cfa_offset (-20)
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cfi_restore (r5)
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cfi_restore (r6)
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cfi_restore (r7)
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cfi_restore (r8)
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cfi_restore (r9)
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14: ands ip, r2, #28
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beq 16f
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@ -1,5 +1,5 @@
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/* Assembler macros for ARM.
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Copyright (C) 1997, 1998, 2003 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 2003, 2009, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -81,18 +81,25 @@
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ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \
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.align ALIGNARG(4); \
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C_LABEL(name) \
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.cfi_sections .debug_frame; \
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cfi_startproc; \
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CALL_MCOUNT
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#undef END
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#define END(name) \
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cfi_endproc; \
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ASM_SIZE_DIRECTIVE(name)
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/* If compiled for profiling, call `mcount' at the start of each function. */
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||||
#ifdef PROF
|
||||
#define CALL_MCOUNT \
|
||||
str lr,[sp, #-4]! ; \
|
||||
bl PLTJMP(mcount) ; \
|
||||
ldr lr, [sp], #4 ;
|
||||
#define CALL_MCOUNT \
|
||||
str lr,[sp, #-4]!; \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
cfi_rel_offset (lr, 0); \
|
||||
bl PLTJMP(mcount); \
|
||||
ldr lr, [sp], #4; \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
cfi_restore (lr)
|
||||
#else
|
||||
#define CALL_MCOUNT /* Do nothing. */
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2002, 2003,
|
||||
2004, 2005
|
||||
2004, 2005, 2009
|
||||
Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
|
|
@ -44,6 +44,7 @@ syscall_error:
|
|||
|
||||
#if USE___THREAD
|
||||
mov ip, lr
|
||||
cfi_register (lr, ip)
|
||||
mov r1, r0
|
||||
|
||||
mov r0, #0xffff0fff
|
||||
|
|
@ -66,9 +67,13 @@ syscall_error:
|
|||
1: .word C_SYMBOL_NAME(rtld_errno) - 0b - 8
|
||||
#elif defined(_LIBC_REENTRANT)
|
||||
str lr, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
cfi_rel_offset (lr, 0)
|
||||
str r0, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
bl PLTJMP(C_SYMBOL_NAME(__errno_location))
|
||||
ldr r1, [sp], #4
|
||||
cfi_adjust_cfa_offset (-4)
|
||||
str r1, [r0]
|
||||
mvn r0, $0
|
||||
ldr pc, [sp], #4
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 1996, 1997, 1998, 1999, 2002, 2005, 2008, 2009
|
||||
/* Copyright (C) 1996, 1997, 1998, 1999, 2002, 2005, 2008, 2009, 2010
|
||||
Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Pat Beirne <patb@corelcomputer.com>
|
||||
|
|
@ -52,8 +52,13 @@ ENTRY(__clone)
|
|||
@ new sp is already in r1
|
||||
#ifdef __ARM_EABI__
|
||||
stmfd sp!, {r4, r7}
|
||||
cfi_adjust_cfa_offset (8)
|
||||
cfi_rel_offset (r4, 0)
|
||||
cfi_rel_offset (r7, 4)
|
||||
#else
|
||||
str r4, [sp, #-8]!
|
||||
cfi_adjust_cfa_offset (8)
|
||||
cfi_rel_offset (r4, 0)
|
||||
#endif
|
||||
ldr r2, [sp, #8]
|
||||
ldr r3, [sp, #12]
|
||||
|
|
@ -64,6 +69,7 @@ ENTRY(__clone)
|
|||
#else
|
||||
swi SYS_ify(clone)
|
||||
#endif
|
||||
cfi_endproc
|
||||
cmp r0, #0
|
||||
beq 1f
|
||||
#ifdef __ARM_EABI__
|
||||
|
|
@ -74,6 +80,8 @@ ENTRY(__clone)
|
|||
blt PLTJMP(C_SYMBOL_NAME(__syscall_error))
|
||||
RETINSTR(, lr)
|
||||
|
||||
cfi_startproc
|
||||
cfi_undefined (lr)
|
||||
1:
|
||||
#ifdef RESET_PID
|
||||
tst ip, #CLONE_THREAD
|
||||
|
|
|
|||
|
|
@ -30,6 +30,7 @@ longjmp_msg:
|
|||
#ifdef PIC
|
||||
# define CALL_FAIL \
|
||||
ldr sl, .L_GOT; \
|
||||
cfi_undefined (sl); \
|
||||
.L_GOT_OFF: \
|
||||
add sl, pc, sl; \
|
||||
ldr r0, .Lstr; \
|
||||
|
|
@ -48,12 +49,17 @@ longjmp_msg:
|
|||
#endif
|
||||
|
||||
#define CHECK_SP(reg) \
|
||||
cfi_remember_state; \
|
||||
cmp sp, reg; \
|
||||
bls .Lok; \
|
||||
mov r5, r0; \
|
||||
cfi_undefined (r5); \
|
||||
mov r7, #SYS_ify(sigaltstack); \
|
||||
cfi_undefined (r7); \
|
||||
mov r0, #0; \
|
||||
sub sp, sp, #16; \
|
||||
sub sp, sp, #16; /* >= sizeof (stack_t) */ \
|
||||
cfi_adjust_cfa_offset (16); \
|
||||
cfi_remember_state; \
|
||||
mov r1, sp; \
|
||||
swi #0; \
|
||||
cmp r0, #0; \
|
||||
|
|
@ -69,8 +75,10 @@ longjmp_msg:
|
|||
bhi .Lok2; \
|
||||
.Lfail: \
|
||||
CALL_FAIL \
|
||||
cfi_restore_state; \
|
||||
.Lok2: \
|
||||
mov r0, r5; \
|
||||
cfi_restore_state; \
|
||||
.Lok:
|
||||
|
||||
#include <__longjmp.S>
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2000, 2003, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2000, 2003, 2005, 2009 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -34,8 +34,13 @@
|
|||
ENTRY (__mmap64)
|
||||
ldr ip, [sp, $LOW_OFFSET]
|
||||
str r5, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
cfi_rel_offset (r5, 0)
|
||||
ldr r5, [sp, $HIGH_OFFSET]
|
||||
str r4, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
cfi_rel_offset (r4, 0)
|
||||
cfi_remember_state
|
||||
movs r4, ip, lsl $20 @ check that offset is page-aligned
|
||||
mov ip, ip, lsr $12
|
||||
moveqs r4, r5, lsr $12 @ check for overflow
|
||||
|
|
@ -45,11 +50,19 @@ ENTRY (__mmap64)
|
|||
DO_CALL (mmap2, 0)
|
||||
cmn r0, $4096
|
||||
ldmfd sp!, {r4, r5}
|
||||
cfi_adjust_cfa_offset (-8)
|
||||
cfi_restore (r4)
|
||||
cfi_restore (r5)
|
||||
RETINSTR(cc, lr)
|
||||
b PLTJMP(syscall_error)
|
||||
|
||||
cfi_restore_state
|
||||
.Linval:
|
||||
mov r0, $-EINVAL
|
||||
ldmfd sp!, {r4, r5}
|
||||
cfi_adjust_cfa_offset (-8)
|
||||
cfi_restore (r4)
|
||||
cfi_restore (r5)
|
||||
b PLTJMP(syscall_error)
|
||||
PSEUDO_END (__mmap64)
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003, 2004, 2005, 2009 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -36,17 +36,22 @@
|
|||
.type __##syscall_name##_nocancel,%function; \
|
||||
.globl __##syscall_name##_nocancel; \
|
||||
__##syscall_name##_nocancel: \
|
||||
.cfi_sections .debug_frame; \
|
||||
cfi_startproc; \
|
||||
DO_CALL (syscall_name, args); \
|
||||
PSEUDO_RET; \
|
||||
cfi_endproc; \
|
||||
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
|
||||
ENTRY (name); \
|
||||
SINGLE_THREAD_P; \
|
||||
DOARGS_##args; \
|
||||
bne .Lpseudo_cancel; \
|
||||
cfi_remember_state; \
|
||||
DO_CALL (syscall_name, 0); \
|
||||
UNDOARGS_##args; \
|
||||
cmn r0, $4096; \
|
||||
PSEUDO_RET; \
|
||||
cfi_restore_state; \
|
||||
.Lpseudo_cancel: \
|
||||
.fnstart; \
|
||||
DOCARGS_##args; /* save syscall args etc. around CENABLE. */ \
|
||||
|
|
@ -62,41 +67,127 @@
|
|||
mov r0, r7; /* retrieve return value. */ \
|
||||
RESTORE_LR_##args; \
|
||||
UNDOARGS_##args; \
|
||||
cmn r0, $4096;
|
||||
cmn r0, $4096
|
||||
|
||||
/* DOARGS pushes four bytes on the stack for five arguments, eight bytes for
|
||||
six arguments, and nothing for fewer. In order to preserve doubleword
|
||||
alignment, sometimes we must save an extra register. */
|
||||
|
||||
# define RESTART_UNWIND .fnend; .fnstart; .save {r7, lr}
|
||||
# define RESTART_UNWIND \
|
||||
.fnend; \
|
||||
.fnstart; \
|
||||
.save {r7, lr}
|
||||
|
||||
# define DOCARGS_0 stmfd sp!, {r7, lr}; .save {r7, lr}
|
||||
# define DOCARGS_0 \
|
||||
stmfd sp!, {r7, lr}; \
|
||||
cfi_adjust_cfa_offset (8); \
|
||||
cfi_rel_offset (r7, 0); \
|
||||
cfi_rel_offset (lr, 4); \
|
||||
.save {r7, lr}
|
||||
# define UNDOCARGS_0
|
||||
# define RESTORE_LR_0 ldmfd sp!, {r7, lr};
|
||||
# define RESTORE_LR_0 \
|
||||
ldmfd sp!, {r7, lr}; \
|
||||
cfi_adjust_cfa_offset (-8); \
|
||||
cfi_restore (r7); \
|
||||
cfi_restore (lr)
|
||||
|
||||
# define DOCARGS_1 stmfd sp!, {r0, r1, r7, lr}; .save {r7, lr}; .pad #8
|
||||
# define UNDOCARGS_1 ldr r0, [sp], #8; RESTART_UNWIND
|
||||
# define RESTORE_LR_1 RESTORE_LR_0
|
||||
# define DOCARGS_1 \
|
||||
stmfd sp!, {r0, r1, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (16); \
|
||||
cfi_rel_offset (r7, 8); \
|
||||
cfi_rel_offset (lr, 12); \
|
||||
.save {r7, lr}; \
|
||||
.pad #8
|
||||
# define UNDOCARGS_1 \
|
||||
ldr r0, [sp], #8; \
|
||||
cfi_adjust_cfa_offset (-8); \
|
||||
RESTART_UNWIND
|
||||
# define RESTORE_LR_1 \
|
||||
RESTORE_LR_0
|
||||
|
||||
# define DOCARGS_2 stmfd sp!, {r0, r1, r7, lr}; .save {r7, lr}; .pad #8
|
||||
# define UNDOCARGS_2 ldmfd sp!, {r0, r1}; RESTART_UNWIND
|
||||
# define RESTORE_LR_2 RESTORE_LR_0
|
||||
# define DOCARGS_2 \
|
||||
stmfd sp!, {r0, r1, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (16); \
|
||||
cfi_rel_offset (r7, 8); \
|
||||
cfi_rel_offset (lr, 12); \
|
||||
.save {r7, lr}; \
|
||||
.pad #8
|
||||
# define UNDOCARGS_2 \
|
||||
ldmfd sp!, {r0, r1}; \
|
||||
cfi_adjust_cfa_offset (-8); \
|
||||
RESTART_UNWIND
|
||||
# define RESTORE_LR_2 \
|
||||
RESTORE_LR_0
|
||||
|
||||
# define DOCARGS_3 stmfd sp!, {r0, r1, r2, r3, r7, lr}; .save {r7, lr}; .pad #16
|
||||
# define UNDOCARGS_3 ldmfd sp!, {r0, r1, r2, r3}; RESTART_UNWIND
|
||||
# define RESTORE_LR_3 RESTORE_LR_0
|
||||
# define DOCARGS_3 \
|
||||
stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (24); \
|
||||
cfi_rel_offset (r7, 16); \
|
||||
cfi_rel_offset (lr, 20); \
|
||||
.save {r7, lr}; \
|
||||
.pad #16
|
||||
# define UNDOCARGS_3 \
|
||||
ldmfd sp!, {r0, r1, r2, r3}; \
|
||||
cfi_adjust_cfa_offset (-16); \
|
||||
RESTART_UNWIND
|
||||
# define RESTORE_LR_3 \
|
||||
RESTORE_LR_0
|
||||
|
||||
# define DOCARGS_4 stmfd sp!, {r0, r1, r2, r3, r7, lr}; .save {r7, lr}; .pad #16
|
||||
# define UNDOCARGS_4 ldmfd sp!, {r0, r1, r2, r3}; RESTART_UNWIND
|
||||
# define RESTORE_LR_4 RESTORE_LR_0
|
||||
# define DOCARGS_4 \
|
||||
stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (24); \
|
||||
cfi_rel_offset (r7, 16); \
|
||||
cfi_rel_offset (lr, 20); \
|
||||
.save {r7, lr}; \
|
||||
.pad #16
|
||||
# define UNDOCARGS_4 \
|
||||
ldmfd sp!, {r0, r1, r2, r3}; \
|
||||
cfi_adjust_cfa_offset (-16); \
|
||||
RESTART_UNWIND
|
||||
# define RESTORE_LR_4 \
|
||||
RESTORE_LR_0
|
||||
|
||||
# define DOCARGS_5 .save {r4}; stmfd sp!, {r0, r1, r2, r3, r4, r7, lr}; .save {r7, lr}; .pad #20
|
||||
# define UNDOCARGS_5 ldmfd sp!, {r0, r1, r2, r3}; .fnend; .fnstart; .save {r4}; .save {r7, lr}; .pad #4
|
||||
# define RESTORE_LR_5 ldmfd sp!, {r4, r7, lr}
|
||||
/* r4 is only stmfd'ed for correct stack alignment. */
|
||||
# define DOCARGS_5 \
|
||||
.save {r4}; \
|
||||
stmfd sp!, {r0, r1, r2, r3, r4, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (28); \
|
||||
cfi_rel_offset (r7, 20); \
|
||||
cfi_rel_offset (lr, 24); \
|
||||
.save {r7, lr}; \
|
||||
.pad #20
|
||||
# define UNDOCARGS_5 \
|
||||
ldmfd sp!, {r0, r1, r2, r3}; \
|
||||
cfi_adjust_cfa_offset (-16); \
|
||||
.fnend; \
|
||||
.fnstart; \
|
||||
.save {r4}; \
|
||||
.save {r7, lr}; \
|
||||
.pad #4
|
||||
# define RESTORE_LR_5 \
|
||||
ldmfd sp!, {r4, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (-12); \
|
||||
/* r4 will be marked as restored later. */ \
|
||||
cfi_restore (r7); \
|
||||
cfi_restore (lr)
|
||||
|
||||
# define DOCARGS_6 .save {r4, r5}; stmfd sp!, {r0, r1, r2, r3, r7, lr}; .save {r7, lr}; .pad #16
|
||||
# define UNDOCARGS_6 ldmfd sp!, {r0, r1, r2, r3}; .fnend; .fnstart; .save {r4, r5}; .save {r7, lr}
|
||||
# define RESTORE_LR_6 RESTORE_LR_0
|
||||
# define DOCARGS_6 \
|
||||
.save {r4, r5}; \
|
||||
stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
|
||||
cfi_adjust_cfa_offset (24); \
|
||||
cfi_rel_offset (r7, 16); \
|
||||
cfi_rel_offset (lr, 20); \
|
||||
.save {r7, lr}; \
|
||||
.pad #16
|
||||
# define UNDOCARGS_6 \
|
||||
ldmfd sp!, {r0, r1, r2, r3}; \
|
||||
cfi_adjust_cfa_offset (-16); \
|
||||
.fnend; \
|
||||
.fnstart; \
|
||||
.save {r4, r5}; \
|
||||
.save {r7, lr}
|
||||
# define RESTORE_LR_6 \
|
||||
RESTORE_LR_0
|
||||
|
||||
# ifdef IS_IN_libpthread
|
||||
# define CENABLE bl PLTJMP(__pthread_enable_asynccancel)
|
||||
|
|
@ -136,9 +227,13 @@ extern int __local_multiple_threads attribute_hidden;
|
|||
# define PSEUDO_PROLOGUE
|
||||
# define SINGLE_THREAD_P \
|
||||
stmfd sp!, {r0, lr}; \
|
||||
cfi_adjust_cfa_offset (8); \
|
||||
cfi_rel_offset (lr, 4); \
|
||||
bl __aeabi_read_tp; \
|
||||
ldr ip, [r0, #MULTIPLE_THREADS_OFFSET]; \
|
||||
ldmfd sp!, {r0, lr}; \
|
||||
cfi_adjust_cfa_offset (-8); \
|
||||
cfi_restore (lr); \
|
||||
teq ip, #0
|
||||
# define SINGLE_THREAD_P_PIC(x) SINGLE_THREAD_P
|
||||
# endif
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>.
|
||||
|
||||
|
|
@ -89,7 +89,15 @@ asm (
|
|||
" .globl _Unwind_Resume\n"
|
||||
" .type _Unwind_Resume, %function\n"
|
||||
"_Unwind_Resume:\n"
|
||||
" .cfi_sections .debug_frame\n"
|
||||
" " CFI_STARTPROC "\n"
|
||||
" stmfd sp!, {r4, r5, r6, lr}\n"
|
||||
" " CFI_ADJUST_CFA_OFFSET (16)" \n"
|
||||
" " CFI_REL_OFFSET (r4, 0) "\n"
|
||||
" " CFI_REL_OFFSET (r5, 4) "\n"
|
||||
" " CFI_REL_OFFSET (r6, 8) "\n"
|
||||
" " CFI_REL_OFFSET (lr, 12) "\n"
|
||||
" " CFI_REMEMBER_STATE "\n"
|
||||
" ldr r4, 1f\n"
|
||||
" ldr r5, 2f\n"
|
||||
"3: add r4, pc, r4\n"
|
||||
|
|
@ -99,10 +107,17 @@ asm (
|
|||
" beq 4f\n"
|
||||
"5: mov r0, r6\n"
|
||||
" ldmfd sp!, {r4, r5, r6, lr}\n"
|
||||
" " CFI_ADJUST_CFA_OFFSET (-16) "\n"
|
||||
" " CFI_RESTORE (r4) "\n"
|
||||
" " CFI_RESTORE (r5) "\n"
|
||||
" " CFI_RESTORE (r6) "\n"
|
||||
" " CFI_RESTORE (lr) "\n"
|
||||
" bx r3\n"
|
||||
" " CFI_RESTORE_STATE "\n"
|
||||
"4: bl pthread_cancel_init\n"
|
||||
" ldr r3, [r4, r5]\n"
|
||||
" b 5b\n"
|
||||
" " CFI_ENDPROC "\n"
|
||||
" .align 2\n"
|
||||
#ifdef __thumb2__
|
||||
"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 4\n"
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003, 2005, 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>.
|
||||
|
||||
|
|
@ -52,7 +52,15 @@ asm (
|
|||
" .globl _Unwind_Resume\n"
|
||||
" .type _Unwind_Resume, %function\n"
|
||||
"_Unwind_Resume:\n"
|
||||
" .cfi_sections .debug_frame\n"
|
||||
" " CFI_STARTPROC "\n"
|
||||
" stmfd sp!, {r4, r5, r6, lr}\n"
|
||||
" " CFI_ADJUST_CFA_OFFSET (16)" \n"
|
||||
" " CFI_REL_OFFSET (r4, 0) "\n"
|
||||
" " CFI_REL_OFFSET (r5, 4) "\n"
|
||||
" " CFI_REL_OFFSET (r6, 8) "\n"
|
||||
" " CFI_REL_OFFSET (lr, 12) "\n"
|
||||
" " CFI_REMEMBER_STATE "\n"
|
||||
" ldr r4, 1f\n"
|
||||
" ldr r5, 2f\n"
|
||||
"3: add r4, pc, r4\n"
|
||||
|
|
@ -62,10 +70,17 @@ asm (
|
|||
" beq 4f\n"
|
||||
"5: mov r0, r6\n"
|
||||
" ldmfd sp!, {r4, r5, r6, lr}\n"
|
||||
" " CFI_ADJUST_CFA_OFFSET (-16) "\n"
|
||||
" " CFI_RESTORE (r4) "\n"
|
||||
" " CFI_RESTORE (r5) "\n"
|
||||
" " CFI_RESTORE (r6) "\n"
|
||||
" " CFI_RESTORE (lr) "\n"
|
||||
" bx r3\n"
|
||||
" " CFI_RESTORE_STATE "\n"
|
||||
"4: bl init\n"
|
||||
" ldr r3, [r4, r5]\n"
|
||||
" b 5b\n"
|
||||
" " CFI_ENDPROC "\n"
|
||||
" .align 2\n"
|
||||
#ifdef __thumb2__
|
||||
"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 4\n"
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 1999, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1999, 2005, 2009, 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -34,46 +34,89 @@
|
|||
Because the signal frame layout changed in 2.6.18, we provide two
|
||||
copies of these functions with different unwind information. */
|
||||
|
||||
/* Used in ENTRY. */
|
||||
#undef cfi_startproc
|
||||
#define cfi_startproc \
|
||||
.cfi_startproc simple; \
|
||||
.cfi_signal_frame
|
||||
|
||||
/* The CFA is not computed / used correctly here; this is neither trivial to
|
||||
do, nor is it needed. */
|
||||
#define CFI \
|
||||
cfi_def_cfa (sp, 0); \
|
||||
cfi_offset (r0, OFFSET + 0 * 4); \
|
||||
cfi_offset (r1, OFFSET + 1 * 4); \
|
||||
cfi_offset (r2, OFFSET + 2 * 4); \
|
||||
cfi_offset (r3, OFFSET + 3 * 4); \
|
||||
cfi_offset (r4, OFFSET + 4 * 4); \
|
||||
cfi_offset (r5, OFFSET + 5 * 4); \
|
||||
cfi_offset (r6, OFFSET + 6 * 4); \
|
||||
cfi_offset (r7, OFFSET + 7 * 4); \
|
||||
cfi_offset (r8, OFFSET + 8 * 4); \
|
||||
cfi_offset (r9, OFFSET + 9 * 4); \
|
||||
cfi_offset (r10, OFFSET + 10 * 4); \
|
||||
cfi_offset (r11, OFFSET + 11 * 4); \
|
||||
cfi_offset (r12, OFFSET + 12 * 4); \
|
||||
cfi_offset (r13, OFFSET + 13 * 4); \
|
||||
cfi_offset (r14, OFFSET + 14 * 4); \
|
||||
cfi_offset (r15, OFFSET + 15 * 4)
|
||||
|
||||
#ifndef __ASSUME_SIGFRAME_V2
|
||||
#define OFFSET 12
|
||||
.fnstart
|
||||
.save {r0-r15}
|
||||
.pad #12
|
||||
.pad #OFFSET
|
||||
nop
|
||||
ENTRY(__default_sa_restorer_v1)
|
||||
CFI
|
||||
mov r7, $SYS_ify(sigreturn)
|
||||
swi 0x0
|
||||
.fnend
|
||||
#endif
|
||||
END(__default_sa_restorer_v1)
|
||||
#undef OFFSET
|
||||
#endif /* __ASSUME_SIGFRAME_V2 */
|
||||
|
||||
#define OFFSET 32
|
||||
.fnstart
|
||||
.save {r0-r15}
|
||||
.pad #32
|
||||
.pad #OFFSET
|
||||
nop
|
||||
ENTRY(__default_sa_restorer_v2)
|
||||
CFI
|
||||
mov r7, $SYS_ify(sigreturn)
|
||||
swi 0x0
|
||||
.fnend
|
||||
END(__default_sa_restorer_v2)
|
||||
#undef OFFSET
|
||||
|
||||
#ifdef __NR_rt_sigreturn
|
||||
|
||||
#ifndef __ASSUME_SIGFRAME_V2
|
||||
#define OFFSET 168
|
||||
.fnstart
|
||||
.save {r0-r15}
|
||||
.pad #168
|
||||
.pad #OFFSET
|
||||
nop
|
||||
ENTRY(__default_rt_sa_restorer_v1)
|
||||
CFI
|
||||
mov r7, $SYS_ify(rt_sigreturn)
|
||||
swi 0x0
|
||||
.fnend
|
||||
#endif
|
||||
END(__default_rt_sa_restorer_v1)
|
||||
#undef OFFSET
|
||||
#endif /* __ASSUME_SIGFRAME_V2 */
|
||||
|
||||
#define OFFSET 160
|
||||
.fnstart
|
||||
.save {r0-r15}
|
||||
.pad #160
|
||||
.pad #OFFSET
|
||||
nop
|
||||
ENTRY(__default_rt_sa_restorer_v2)
|
||||
CFI
|
||||
mov r7, $SYS_ify(rt_sigreturn)
|
||||
swi 0x0
|
||||
.fnend
|
||||
END(__default_rt_sa_restorer_v2)
|
||||
#undef OFFSET
|
||||
|
||||
#endif
|
||||
#endif /* __NR_rt_sigreturn */
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2005, 2009 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -25,6 +25,11 @@
|
|||
ENTRY (syscall)
|
||||
mov ip, sp
|
||||
stmfd sp!, {r4, r5, r6, r7}
|
||||
cfi_adjust_cfa_offset (16)
|
||||
cfi_rel_offset (r4, 0)
|
||||
cfi_rel_offset (r5, 4)
|
||||
cfi_rel_offset (r6, 8)
|
||||
cfi_rel_offset (r7, 12)
|
||||
mov r7, r0
|
||||
mov r0, r1
|
||||
mov r1, r2
|
||||
|
|
@ -32,6 +37,11 @@ ENTRY (syscall)
|
|||
ldmfd ip, {r3, r4, r5, r6}
|
||||
swi 0x0
|
||||
ldmfd sp!, {r4, r5, r6, r7}
|
||||
cfi_adjust_cfa_offset (-16)
|
||||
cfi_restore (r4)
|
||||
cfi_restore (r5)
|
||||
cfi_restore (r6)
|
||||
cfi_restore (r7)
|
||||
cmn r0, #4096
|
||||
RETINSTR(cc, lr)
|
||||
b PLTJMP(syscall_error)
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2005, 2006, 2007
|
||||
/* Copyright (C) 2005, 2006, 2007, 2009
|
||||
Free Software Foundation, Inc.
|
||||
|
||||
This file is part of the GNU C Library.
|
||||
|
|
@ -50,6 +50,7 @@
|
|||
For the moment the LOAD_ARGS_7 is sacrificed.
|
||||
We can't use push/pop inside the asm because that breaks
|
||||
unwinding (ie. thread cancellation). */
|
||||
/* FIXME: the str / ldr of r7 are not covered by CFI information. */
|
||||
#undef LOAD_ARGS_7
|
||||
#undef INTERNAL_SYSCALL_RAW
|
||||
#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
|
||||
|
|
@ -100,11 +101,13 @@
|
|||
|
||||
#undef DO_CALL
|
||||
#define DO_CALL(syscall_name, args) \
|
||||
DOARGS_##args \
|
||||
DOARGS_##args; \
|
||||
mov ip, r7; \
|
||||
cfi_register (r7, ip); \
|
||||
ldr r7, =SYS_ify (syscall_name); \
|
||||
swi 0x0; \
|
||||
mov r7, ip; \
|
||||
cfi_restore (r7); \
|
||||
UNDOARGS_##args
|
||||
|
||||
#endif /* _LINUX_ARM_EABI_SYSDEP_H */
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 1998, 2000, 2003, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1998, 2000, 2003, 2005, 2009 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -33,8 +33,13 @@ ENTRY (__mmap)
|
|||
|
||||
/* shuffle args */
|
||||
str r5, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
cfi_rel_offset (r5, 0)
|
||||
ldr r5, [sp, #8]
|
||||
str r4, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
cfi_rel_offset (r4, 0)
|
||||
cfi_remember_state
|
||||
ldr r4, [sp, #8]
|
||||
|
||||
/* convert offset to pages */
|
||||
|
|
@ -48,12 +53,17 @@ ENTRY (__mmap)
|
|||
/* restore registers */
|
||||
2:
|
||||
ldr r4, [sp], #4
|
||||
cfi_adjust_cfa_offset (-4)
|
||||
cfi_restore (r4)
|
||||
ldr r5, [sp], #4
|
||||
cfi_adjust_cfa_offset (-4)
|
||||
cfi_restore (r5)
|
||||
|
||||
cmn r0, $4096
|
||||
RETINSTR(cc, lr)
|
||||
b PLTJMP(syscall_error)
|
||||
|
||||
cfi_restore_state
|
||||
.Linval:
|
||||
mov r0, #-EINVAL
|
||||
b 2b
|
||||
|
|
@ -74,6 +84,7 @@ ENTRY (__mmap)
|
|||
|
||||
/* store args on the stack */
|
||||
stmdb sp!, {a1-a4}
|
||||
cfi_adjust_cfa_offset (16)
|
||||
|
||||
/* do the syscall */
|
||||
mov a1, sp
|
||||
|
|
@ -81,6 +92,7 @@ ENTRY (__mmap)
|
|||
|
||||
/* pop args off the stack. */
|
||||
add sp, sp, #16
|
||||
cfi_adjust_cfa_offset (-16)
|
||||
|
||||
cmn r0, $4096
|
||||
RETINSTR(cc, lr)
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2005, 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -21,10 +21,14 @@
|
|||
/* Save the PID value. */
|
||||
#define SAVE_PID \
|
||||
str lr, [sp, #-4]!; /* Save LR. */ \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
cfi_rel_offset (lr, 0); \
|
||||
mov r0, #0xffff0fff; /* Point to the high page. */ \
|
||||
mov lr, pc; /* Save our return address. */ \
|
||||
sub pc, r0, #31; /* Jump to the TLS entry. */ \
|
||||
ldr lr, [sp], #4; /* Restore LR. */ \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
cfi_restore (lr); \
|
||||
mov r2, r0; /* Save the TLS addr in r2. */ \
|
||||
ldr r3, [r2, #PID_OFFSET]; /* Load the saved PID. */ \
|
||||
rsb r0, r3, #0; /* Negate it. */ \
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2005, 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
|
|
@ -21,10 +21,14 @@
|
|||
/* Save the PID value. */
|
||||
#define SAVE_PID \
|
||||
str lr, [sp, #-4]!; /* Save LR. */ \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
cfi_rel_offset (lr, 0); \
|
||||
mov r0, #0xffff0fff; /* Point to the high page. */ \
|
||||
mov lr, pc; /* Save our return address. */ \
|
||||
sub pc, r0, #31; /* Jump to the TLS entry. */ \
|
||||
ldr lr, [sp], #4; /* Restore LR. */ \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
cfi_restore (lr); \
|
||||
mov r2, r0; /* Save the TLS addr in r2. */ \
|
||||
ldr r3, [r2, #PID_OFFSET]; /* Load the saved PID. */ \
|
||||
rsbs r0, r3, #0; /* Negate it. */ \
|
||||
|
|
|
|||
|
|
@ -84,7 +84,7 @@
|
|||
|
||||
#undef PSEUDO_END
|
||||
#define PSEUDO_END(name) \
|
||||
SYSCALL_ERROR_HANDLER \
|
||||
SYSCALL_ERROR_HANDLER; \
|
||||
END (name)
|
||||
|
||||
#undef PSEUDO_NOERRNO
|
||||
|
|
@ -129,17 +129,26 @@ __local_syscall_error: \
|
|||
DO_RET(lr); \
|
||||
1: .word C_SYMBOL_NAME(rtld_errno) - 0b - 8;
|
||||
# else
|
||||
#if defined(__ARM_ARCH_4T__) && defined(__THUMB_INTERWORK__)
|
||||
#define POP_PC ldr lr, [sp], #4; bx lr
|
||||
#else
|
||||
#define POP_PC ldr pc, [sp], #4
|
||||
#endif
|
||||
# if defined(__ARM_ARCH_4T__) && defined(__THUMB_INTERWORK__)
|
||||
# define POP_PC \
|
||||
ldr lr, [sp], #4; \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
cfi_restore (lr); \
|
||||
bx lr
|
||||
# else
|
||||
# define POP_PC \
|
||||
ldr pc, [sp], #4
|
||||
# endif
|
||||
# define SYSCALL_ERROR_HANDLER \
|
||||
__local_syscall_error: \
|
||||
str lr, [sp, #-4]!; \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
cfi_rel_offset (lr, 0); \
|
||||
str r0, [sp, #-4]!; \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
bl PLTJMP(C_SYMBOL_NAME(__errno_location)); \
|
||||
ldr r1, [sp], #4; \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
rsb r1, r1, #0; \
|
||||
str r1, [r0]; \
|
||||
mvn r0, #0; \
|
||||
|
|
@ -179,7 +188,7 @@ __local_syscall_error: \
|
|||
|
||||
#undef DO_CALL
|
||||
#define DO_CALL(syscall_name, args) \
|
||||
DOARGS_##args \
|
||||
DOARGS_##args; \
|
||||
swi SYS_ify (syscall_name); \
|
||||
UNDOARGS_##args
|
||||
|
||||
|
|
@ -188,18 +197,47 @@ __local_syscall_error: \
|
|||
#define DOARGS_2 /* nothing */
|
||||
#define DOARGS_3 /* nothing */
|
||||
#define DOARGS_4 /* nothing */
|
||||
#define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $4];
|
||||
#define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmia ip, {r4, r5};
|
||||
#define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmia ip, {r4, r5, r6};
|
||||
#define DOARGS_5 \
|
||||
str r4, [sp, $-4]!; \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
cfi_rel_offset (r4, 0); \
|
||||
ldr r4, [sp, $4]
|
||||
#define DOARGS_6 \
|
||||
mov ip, sp; \
|
||||
stmfd sp!, {r4, r5}; \
|
||||
cfi_adjust_cfa_offset (8); \
|
||||
cfi_rel_offset (r4, 0); \
|
||||
cfi_rel_offset (r5, 4); \
|
||||
ldmia ip, {r4, r5}
|
||||
#define DOARGS_7 \
|
||||
mov ip, sp; \
|
||||
stmfd sp!, {r4, r5, r6}; \
|
||||
cfi_adjust_cfa_offset (12); \
|
||||
cfi_rel_offset (r4, 0); \
|
||||
cfi_rel_offset (r5, 4); \
|
||||
cfi_rel_offset (r6, 8); \
|
||||
ldmia ip, {r4, r5, r6}
|
||||
|
||||
#define UNDOARGS_0 /* nothing */
|
||||
#define UNDOARGS_1 /* nothing */
|
||||
#define UNDOARGS_2 /* nothing */
|
||||
#define UNDOARGS_3 /* nothing */
|
||||
#define UNDOARGS_4 /* nothing */
|
||||
#define UNDOARGS_5 ldr r4, [sp], $4;
|
||||
#define UNDOARGS_6 ldmfd sp!, {r4, r5};
|
||||
#define UNDOARGS_7 ldmfd sp!, {r4, r5, r6};
|
||||
#define UNDOARGS_5 \
|
||||
ldr r4, [sp], $4; \
|
||||
cfi_adjust_cfa_offset (-4); \
|
||||
cfi_restore (r4)
|
||||
#define UNDOARGS_6 \
|
||||
ldmfd sp!, {r4, r5}; \
|
||||
cfi_adjust_cfa_offset (-8); \
|
||||
cfi_restore (r4); \
|
||||
cfi_restore (r5)
|
||||
#define UNDOARGS_7 \
|
||||
ldmfd sp!, {r4, r5, r6}; \
|
||||
cfi_adjust_cfa_offset (-12); \
|
||||
cfi_restore (r4); \
|
||||
cfi_restore (r5); \
|
||||
cfi_restore (r6)
|
||||
|
||||
#else /* not __ASSEMBLER__ */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue