2002-11-07 Richard Henderson <rth@redhat.com>
* elf/tls-macros.h: Add alpha versions. * sysdeps/alpha/dl-machine.h (elf_machine_rela): Handle TLS relocs. * sysdeps/unix/alpha/sysdep.S: Support USE___THREAD. * sysdeps/unix/alpha/sysdep.h: Likewise. Add SYSCALL_ERROR_HANDLER. * sysdeps/unix/sysv/linux/alpha/brk.S: Use it. * sysdeps/unix/sysv/linux/alpha/clone.S: Likewise. * sysdeps/unix/sysv/linux/alpha/getitimer.S: Likewise. * sysdeps/unix/sysv/linux/alpha/getrusage.S: Likewise. * sysdeps/unix/sysv/linux/alpha/gettimeofday.S: Likewise. * sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Likewise. * sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Likewise. * sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Likewise. * sysdeps/unix/sysv/linux/alpha/select.S: Likewise. * sysdeps/unix/sysv/linux/alpha/setitimer.S: Likewise. * sysdeps/unix/sysv/linux/alpha/settimeofday.S: Likewise. * sysdeps/unix/sysv/linux/alpha/sigsuspend.S: Likewise. * sysdeps/unix/sysv/linux/alpha/syscall.S: Likewise. * sysdeps/unix/sysv/linux/alpha/utimes.S: Likewise. * sysdeps/unix/sysv/linux/alpha/wait4.S: Likewise.
This commit is contained in:
Roland McGrath
parent
e8b06fdf73
commit
d5a256add3
@ -1,4 +1,4 @@
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/* Copyright (C) 1993, 1996, 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1993, 1996, 1998, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Brendan Kehoe (brendan@zen.org).
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@ -20,24 +20,59 @@
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#include <sysdep.h>
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#include <features.h>
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#if defined(__ELF__) && defined(PIC)
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/* Put this at the end of libc's text segment so that all of
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the direct branches from the syscalls are forward, and
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thus predicted not taken. */
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.section .text.last, "ax", @progbits
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#else
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.text
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.align 2
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#endif
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#ifdef _LIBC_REENTRANT
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#ifdef PIC
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/* When building a shared library, we branch here without
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having loaded the GP. Nor, since it was a direct branch,
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have we loaded PV with our address. Do both. */
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# define LOADGP br pv, 1f; 1: ldgp gp, 0(pv)
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# define PROLOGUE .prologue 0
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#else
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# define LOADGP ldgp gp, 0(pv)
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# define PROLOGUE .prologue 1
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#endif
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.align 4
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.globl __syscall_error
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.ent __syscall_error
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__syscall_error:
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ldgp gp, 0(pv)
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#if defined(_LIBC_REENTRANT) && defined(USE___THREAD)
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LOADGP
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PROLOGUE
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mov v0, t0
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call_pal PAL_rduniq
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ldq t1, __libc_errno(gp) !gottprel
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addq v0, t1, v0
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stl t0, 0(v0)
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lda v0, -1
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ret
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#elif defined(_LIBC_REENTRANT)
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LOADGP
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lda sp, -16(sp)
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.frame sp, 16, ra, 0
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stq ra, 0(sp)
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stq v0, 8(sp)
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.mask 0x4000001, -16
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.prologue 1
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PROLOGUE
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/* Find our per-thread errno address */
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#ifdef PIC
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bsr ra, __errno_location !samegp
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#else
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jsr ra, __errno_location
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#endif
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/* Store the error value. */
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ldq t0, 8(sp)
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@ -49,16 +84,15 @@ __syscall_error:
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ldq ra, 0(sp)
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lda sp, 16(sp)
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ret
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.end __syscall_error
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#else
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ENTRY(__syscall_error)
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ldgp gp, 0(t12)
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.prologue 1
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LOADGP
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PROLOGUE
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stl v0, errno
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lda v0, -1
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ret
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END(__syscall_error)
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#endif /* _LIBC_REENTRANT */
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#endif
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.end __syscall_error
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@ -27,6 +27,13 @@
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# include <regdef.h>
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#endif
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#include <tls.h> /* Defines USE___THREAD. */
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#ifdef IS_IN_rtld
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# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
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#endif
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#ifdef __STDC__
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#define __LABEL(x) x##:
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#else
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@ -55,54 +62,65 @@
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label of that number between those two macros! */
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#ifdef PROF
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#define PSEUDO(name, syscall_name, args) \
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.globl name; \
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.align 3; \
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.ent name,0; \
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__LABEL(name) \
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.frame sp, 0, ra; \
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ldgp gp,0(pv); \
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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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.prologue 1; \
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ldiq v0, SYS_ify(syscall_name); \
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.set noat; \
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call_pal PAL_callsys; \
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.set at; \
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bne a3, 1996f; \
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3:
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# define PSEUDO_PROLOGUE \
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.frame sp, 0, ra; \
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ldgp gp,0(pv); \
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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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.prologue 1
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# define PSEUDO_LOADGP
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#else
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#define PSEUDO(name, syscall_name, args) \
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.globl name; \
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.align 3; \
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.ent name,0; \
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__LABEL(name) \
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.frame sp, 0, ra \
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.prologue 0; \
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ldiq v0, SYS_ify(syscall_name); \
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.set noat; \
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call_pal PAL_callsys; \
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.set at; \
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bne a3, 1996f; \
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3:
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#endif
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# define PSEUDO_PROLOGUE \
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.frame sp, 0, ra; \
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.prologue 0
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# define PSEUDO_LOADGP \
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br gp, 2f; \
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2: ldgp gp, 0(gp)
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#endif /* PROF */
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#undef PSEUDO_END
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#ifdef PROF
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#define PSEUDO_END(sym) \
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1996: \
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jmp zero, __syscall_error; \
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END(sym)
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#if RTLD_PRIVATE_ERRNO
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# define SYSCALL_ERROR_HANDLER \
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stl v0, errno(gp) !gprel; \
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lda v0, -1; \
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ret
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#else
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#define PSEUDO_END(sym) \
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# define SYSCALL_ERROR_HANDLER \
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jmp $31, __syscall_error
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#endif /* RTLD_PRIVATE_ERRNO */
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#if defined(PIC) && !RTLD_PRIVATE_ERRNO
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# define PSEUDO(name, syscall_name, args) \
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.globl name; \
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.align 4; \
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.ent name,0; \
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__LABEL(name) \
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PSEUDO_PROLOGUE; \
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lda v0, SYS_ify(syscall_name); \
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call_pal PAL_callsys; \
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bne a3, __syscall_error !samegp; \
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3:
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# undef PSEUDO_END
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# define PSEUDO_END(sym) END(sym)
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#else
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# define PSEUDO(name, syscall_name, args) \
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.globl name; \
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.align 4; \
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.ent name,0; \
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__LABEL(name) \
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lda v0, SYS_ify(syscall_name); \
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call_pal PAL_callsys; \
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bne a3, 1996f; \
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3:
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# undef PSEUDO_END
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# define PSEUDO_END(sym) \
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1996: \
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br gp, 2f; \
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2: ldgp gp, 0(gp); \
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jmp zero, __syscall_error; \
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END(sym)
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#endif
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PSEUDO_LOADGP; \
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SYSCALL_ERROR_HANDLER; \
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END(sym)
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#endif /* PIC && !RTLD_PRIVATE_ERRNO */
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#define r0 v0
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#define r1 a4
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@ -74,7 +74,7 @@ $ok: stq a0, __curbrk
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/* What a horrible way to die. */
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$err0: ldi v0, ENOMEM
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$err1: addq sp, 8, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__brk)
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@ -97,7 +97,7 @@ $do32: ldi v0, SYS_ify(osf_getitimer)
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.align 3
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$error:
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addq sp, 16, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(GETITIMER)
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@ -129,7 +129,7 @@ $do32: ldi v0, SYS_ify(osf_getrusage)
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.align 3
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$error:
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addq sp, 16, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(GETRUSAGE)
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@ -94,7 +94,7 @@ $do32: ldi v0, SYS_ify(osf_gettimeofday)
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.align 3
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$error:
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addq sp, 16, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(GETTIMEOFDAY)
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@ -53,7 +53,7 @@ $error:
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1: ldgp gp, 0(gp)
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#endif
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lda sp, 16(sp)
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__ieee_get_fp_control)
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@ -52,7 +52,7 @@ $error:
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1: ldgp gp, 0(gp)
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#endif
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lda sp, 16(sp)
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__ieee_set_fp_control)
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@ -56,7 +56,7 @@ ENTRY(__syscall_rt_sigaction)
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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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jmp __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__syscall_rt_sigaction)
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@ -82,6 +82,6 @@ ENTRY(__syscall_rt_sigaction)
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ldgp $29,0($27)
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.prologue 1
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ldi $0,ENOSYS
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jmp __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__syscall_rt_sigaction)
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#endif
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@ -112,7 +112,7 @@ $do32:
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.align 3
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$error:
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addq sp, 64, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(SELECT)
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@ -113,7 +113,7 @@ $do32:
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.align 3
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$error:
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addq sp, 48, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(SETITIMER)
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@ -94,7 +94,7 @@ $do32:
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.align 3
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$error:
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addq sp, 16, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(SETTIMEOFDAY)
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@ -47,7 +47,7 @@ error:
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br gp, 1f
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1: ldgp gp, 0(gp)
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#endif
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__sigsuspend)
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@ -70,7 +70,7 @@ $error:
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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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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(__syscall)
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@ -99,7 +99,7 @@ $do32:
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.align 3
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$error:
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addq sp, 16, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(UTIMES)
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@ -132,7 +132,7 @@ $do32: ldi v0, SYS_ify(osf_wait4)
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.align 3
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$error:
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addq sp, 32, sp
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jmp zero, __syscall_error
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SYSCALL_ERROR_HANDLER
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END(WAIT4)
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