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* sysdeps/alpha/dl-machine.h (RTLD_START): Fix top-of-stack backtrace. * sysdeps/unix/sysv/linux/alpha/clone.S: Likewise. * sysdeps/alpha/elf/start.S: Likewise. Remove pointless allocation. * sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Use standard ldgp entry sequence and explicit relocs. Add unwind info for sigreturn and rt_sigreturn. * configure.in (libc_cv_asm_cfi_directives): Test .cfi_remember_state. * configure: Regenerate.
* sysdeps/alpha/dl-machine.h (RTLD_START): Fix top-of-stack backtrace.
* sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
* sysdeps/alpha/elf/start.S: Likewise. Remove pointless allocation.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Use standard ldgp
entry sequence and explicit relocs. Add unwind info for sigreturn
and rt_sigreturn.
* configure.in (libc_cv_asm_cfi_directives): Test .cfi_remember_state.
* configure: Regenerate.
This commit is contained in:
Richard Henderson
parent
a56e4568df
commit
f212e8dcf8
@ -1,5 +1,14 @@
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2003-06-04 Richard Henderson <rth@redhat.com>
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* sysdeps/alpha/dl-machine.h (RTLD_START): Fix top-of-stack backtrace.
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* sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
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* sysdeps/alpha/elf/start.S: Likewise. Remove pointless allocation.
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* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Use standard ldgp
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entry sequence and explicit relocs. Add unwind info for sigreturn
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and rt_sigreturn.
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* configure.in (libc_cv_asm_cfi_directives): Test .cfi_remember_state.
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* configure: Regenerate.
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* sysdeps/unix/sysv/linux/alpha/syscalls.list (semtimedop): New.
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Annotate some parameters.
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* sysdeps/unix/sysv/linux/alpha/sysdep.h (__NR_semtimedop): New.
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1
configure
vendored
1
configure
vendored
@ -5736,6 +5736,7 @@ else
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.type func,@function
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func:
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.cfi_startproc
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.cfi_remember_state
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.cfi_endproc
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EOF
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if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
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@ -1529,6 +1529,7 @@ cat > conftest.s <<EOF
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.type func,@function
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func:
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.cfi_startproc
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.cfi_remember_state
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.cfi_endproc
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EOF
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if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
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@ -303,6 +303,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
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.globl _start \n\
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.ent _start \n\
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_start: \n\
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.frame $31,0,$31,0 \n\
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br $gp, 0f \n\
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0: ldgp $gp, 0($gp) \n\
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.prologue 0 \n\
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@ -314,7 +315,7 @@ _start: \n\
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.globl _dl_start_user \n\
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.ent _dl_start_user \n\
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_dl_start_user: \n\
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.frame $30,0,$31,0 \n\
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.frame $31,0,$31,0 \n\
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.prologue 0 \n\
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/* Save the user entry point address in s0. */ \n\
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mov $0, $9 \n\
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@ -1,5 +1,6 @@
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/* Startup code for Alpha/ELF.
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Copyright (C) 1993,1995,1996,1997,1998,2000,2001, 2002 Free Software Foundation, Inc.
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Copyright (C) 1993, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
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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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Contributed by Richard Henderson <rth@tamu.edu>
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@ -26,8 +27,7 @@
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.ent _start, 0
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.type _start,@function
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_start:
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.frame fp, 0, zero
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mov zero, fp
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.frame $31, 0, $31
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br gp, 1f
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1: ldgp gp, 0(gp)
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subq sp, 16, sp
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@ -65,6 +65,5 @@ weak_alias(_start, __start)
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.data
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.globl __data_start
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__data_start:
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.long 0
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.weak data_start
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data_start = __data_start
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@ -56,6 +56,12 @@
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# define cfi_def_cfa_offset(off) .cfi_def_cfa_offset off
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# define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
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# define cfi_offset(reg, off) .cfi_offset reg, off
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# define cfi_register(r1, r2) .cfi_register r1, r2
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# define cfi_return_column(reg) .cfi_return_column reg
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# define cfi_restore(reg) .cfi_restore reg
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# define cfi_undefined(reg) .cfi_undefined reg
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# define cfi_remember_state .cfi_remember_state
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# define cfi_restore_state .cfi_restore_state
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# else
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# define cfi_startproc
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# define cfi_endproc
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@ -64,6 +70,12 @@
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# define cfi_def_cfa_offset(off)
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# define cfi_adjust_cfa_offset(off)
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# define cfi_offset(reg, off)
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# define cfi_register(r1, r2)
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# define cfi_return_column(reg)
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# define cfi_restore(reg)
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# define cfi_undefined(reg)
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# define cfi_remember_state
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# define cfi_restore_state
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# endif
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#else /* ! ASSEMBLER */
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@ -82,6 +94,18 @@
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".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
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# define CFI_OFFSET(reg, off) \
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".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# define CFI_REGISTER(r1, r2) \
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".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
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# define CFI_RETURN_COLUMN(reg) \
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".cfi_return_column " CFI_STRINGIFY(reg)
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# define CFI_RESTORE(reg) \
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".cfi_restore " CFI_STRINGIFY(reg)
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# define CFI_UNDEFINED(reg) \
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".cfi_undefined " CFI_STRINGIFY(reg)
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# define CFI_REMEMBER_STATE \
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".cfi_remember_state"
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# define CFI_RESTORE_STATE \
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".cfi_restore_state"
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# else
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# define CFI_STARTPROC
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# define CFI_ENDPROC
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@ -90,6 +114,12 @@
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# define CFI_DEF_CFA_OFFSET(off)
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# define CFI_ADJUST_CFA_OFFSET(off)
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# define CFI_OFFSET(reg, off)
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# define CFI_REGISTER(r1, r2)
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# define CFI_RETURN_COLUMN(reg)
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# define CFI_RESTORE(reg)
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# define CFI_UNDEFINED(reg)
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# define CFI_REMEMBER_STATE
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# define CFI_RESTORE_STATE
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# endif
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#endif /* __ASSEMBLER__ */
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@ -83,8 +83,7 @@ $error:
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.ent thread_start
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thread_start:
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.frame fp,0,zero,0
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mov zero,fp
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.frame zero,0,zero,0
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.prologue 0
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/* Load up the arguments. */
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@cygnus.com>, 1998
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@ -28,55 +28,92 @@
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#ifdef __NR_rt_sigaction
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.text
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ENTRY(__syscall_rt_sigaction)
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.frame sp,0,ra,0
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#ifdef PROF
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ldgp gp,0(pv)
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#ifdef PROF
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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#endif
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/* Indicate non-standard use of our PV. */
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.prologue 2
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.prologue 1
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beq a1, 0f
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ldl t0, 8(a1) # sa_flags
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lda a4, sigreturn-__syscall_rt_sigaction(pv)
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lda t1, rt_sigreturn-__syscall_rt_sigaction(pv)
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ldah a4, sigreturn(gp) !gprelhigh
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ldah t1, rt_sigreturn(gp) !gprelhigh
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lda a4, sigreturn(a4) !gprellow
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lda t1, rt_sigreturn(a4) !gprellow
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and t0, 0x00000040, t0 # SA_SIGINFO
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cmovne t0, t1, a4
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0: ldi v0,__NR_rt_sigaction
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0: ldi v0, __NR_rt_sigaction
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callsys
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bne a3,1f
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bne a3, SYSCALL_ERROR_LABEL
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ret
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1:
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#ifndef PROF
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br gp,2f
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2: ldgp gp,0(gp)
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#endif
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SYSCALL_ERROR_HANDLER
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PSEUDO_END(__syscall_rt_sigaction)
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END(__syscall_rt_sigaction)
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/* To enable unwinding through the signal frame without special hackery
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elsewhere, describe the entire struct sigcontext with unwind info.
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Note that we begin the unwind info one instruction before the start
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of the function; the unwinder will subtract one from the return address
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attempting to find the call instruction that led us here, since we
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didn't get here via a normal call. */
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.align 5
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.ent sigreturn
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sigreturn:
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.prologue 0
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mov sp,a0
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ldi v0,__NR_sigreturn
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callsys
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.end sigreturn
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.macro SIGCONTEXT_REGS_I base, from=0
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cfi_offset (\from, \base + (4 + \from) * 8)
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.if 30-\from
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SIGCONTEXT_REGS_I \base, "(\from+1)"
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.endif
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.endm
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.macro SIGCONTEXT_REGS_F base, from=32
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cfi_offset (\from, \base + (4 + 1 + \from) * 8)
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.if 62-\from
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SIGCONTEXT_REGS_F \base, "(\from+1)"
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.endif
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.endm
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.macro SIGCONTEXT_REGS base
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SIGCONTEXT_REGS_I \base
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SIGCONTEXT_REGS_F \base
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cfi_offset (63, \base + (4 + 32 + 1 + 32) * 8)
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cfi_offset (64, \base + 2 * 8)
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.endm
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.align 4
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.ent rt_sigreturn
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nop
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nop
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nop
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cfi_startproc
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cfi_return_column (64)
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SIGCONTEXT_REGS -648
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cfi_def_cfa_offset (648)
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nop
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sigreturn:
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mov sp, a0
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ldi v0, __NR_sigreturn
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callsys
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cfi_endproc
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.size sigreturn, .-sigreturn
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.type sigreturn, @function
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cfi_startproc
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cfi_return_column (64)
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SIGCONTEXT_REGS -648
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cfi_def_cfa_offset (176 + 648)
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nop
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rt_sigreturn:
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.prologue 0
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mov sp,a0
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ldi v0,__NR_rt_sigreturn
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callsys
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.end rt_sigreturn
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cfi_endproc
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.size rt_sigreturn, .-rt_sigreturn
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.type rt_sigreturn, @function
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#else
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ENTRY(__syscall_rt_sigaction)
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ldgp $29,0($27)
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