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edac0e8f44
* elf/tls-macros.h: Add Sparc64 defines. * sysdeps/sparc/sparc64/dl-machine.h (sparc64_fixup_plt): Mark as always_inline. (elf_machine_fixup_plt): Likewise. (elf_machine_rela): Handle TLS relocations. (elf_machine_type_cleaa): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h (SYSCALL_ERROR_HANDLER_ENTRY): Use sethi/or for GOT reloc. It does not always fit in R_SPARC_GOT13 when building -fPIC. Also, add TLS handling. * sysdeps/unix/sysv/linux/configure.in (arch_minimum_kernel): Increase it to 2.4.21 for sparc64. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: NULL terminate backtrace by zero'ing out %fp. Store away flags, func_ptr, and func_arg in global registers not local registers. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Handle PTID, TLS, and CTID arguments properly. Add RESET_PID handling. * sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Rework so that we do not invoke __sigprocmask(). We can always assume rt signals are present on sparc64, so just do an inline syscall. 2005-04-13 Jakub Jelinek <jakub@redhat.com> * sysdeps/sparc/sparc64/dl-machine.h: Add dl_machine_h multiple inclusion guard for the first half of the header. (elf_machine_type_class, ELF_MACHINE_JMP_SLOT, ELF_MACHINE_NO_REL, ELF_MACHINE_PLTREL_OVERLAP, elf_machine_runtime_setup, elf_machine_relplt, DL_STACK_END, RTLD_START): Move into the #ifndef dl_machine_h guarded part of the header.
244 lines
7.2 KiB
C
244 lines
7.2 KiB
C
/* Copyright (C) 1997, 2000, 2002, 2003, 2004 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 <richard@gnu.ai.mit.edu>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _LINUX_SPARC64_SYSDEP_H
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#define _LINUX_SPARC64_SYSDEP_H 1
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#include <sysdeps/unix/sysdep.h>
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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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#undef SYS_ify
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#define SYS_ify(syscall_name) __NR_##syscall_name
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/* This is a kludge to make syscalls.list find these under the names
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pread and pwrite, since some kernel headers define those names
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and some define the *64 names for the same system calls. */
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#if !defined __NR_pread && defined __NR_pread64
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# define __NR_pread __NR_pread64
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#endif
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#if !defined __NR_pwrite && defined __NR_pwrite64
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# define __NR_pwrite __NR_pwrite64
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#endif
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#ifdef __ASSEMBLER__
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#define LOADSYSCALL(x) mov __NR_##x, %g1
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/* Linux/SPARC uses a different trap number */
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#undef PSEUDO
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#undef PSEUDO_NOERRNO
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#undef PSEUDO_ERRVAL
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#undef ENTRY
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#define ENTRY(name) \
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.global C_SYMBOL_NAME(name); \
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.align 2; \
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C_LABEL(name); \
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.type name,@function;
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#ifdef LINKER_HANDLES_R_SPARC_WDISP22
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/* Unfortunately, we cannot do this yet. Linker doesn't seem to
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handle R_SPARC_WDISP22 against non-STB_LOCAL symbols properly . */
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# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \
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.section .gnu.linkonce.t.handler,"ax",@progbits; \
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.globl handler; \
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.hidden handler; \
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.type handler,@function; \
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handler:
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#else
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# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \
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.subsection 3; \
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handler:
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#endif
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#if RTLD_PRIVATE_ERRNO
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# define SYSCALL_ERROR_HANDLER \
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.section .gnu.linkonce.t.__sparc64.get_pic.l7,"ax",@progbits; \
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.globl __sparc64.get_pic.l7; \
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.hidden __sparc64.get_pic.l7; \
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.type __sparc64.get_pic.l7,@function; \
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__sparc64.get_pic.l7: \
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retl; \
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add %o7, %l7, %l7; \
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.previous; \
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SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
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save %sp, -192, %sp; \
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sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \
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call __sparc64.get_pic.l7; \
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add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \
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sethi %hi(rtld_errno), %g1; \
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or %g1, %lo(rtld_errno), %g1; \
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ldx [%l7 + %g1], %l0; \
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st %i0, [%l0]; \
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jmpl %i7+8, %g0; \
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restore %g0, -1, %o0; \
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.previous;
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#elif USE___THREAD
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# ifndef NOT_IN_libc
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# define SYSCALL_ERROR_ERRNO __libc_errno
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# else
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# define SYSCALL_ERROR_ERRNO errno
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# endif
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# ifdef SHARED
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# define SYSCALL_ERROR_HANDLER \
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.section .gnu.linkonce.t.__sparc64.get_pic.l7,"ax",@progbits; \
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.globl __sparc64.get_pic.l7; \
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.hidden __sparc64.get_pic.l7; \
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.type __sparc64.get_pic.l7,@function; \
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__sparc64.get_pic.l7: \
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retl; \
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add %o7, %l7, %l7; \
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.previous; \
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SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
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save %sp,-192,%sp; \
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sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %l1; \
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sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \
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call __sparc64.get_pic.l7; \
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add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \
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add %l1, %tie_lo10(SYSCALL_ERROR_ERRNO), %l1; \
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ldx [%l7 + %l1], %l1, %tie_ldx(SYSCALL_ERROR_ERRNO); \
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st %i0, [%g7 + %l1], %tie_add(SYSCALL_ERROR_ERRNO); \
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jmpl %i7+8, %g0; \
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restore %g0, -1, %o0; \
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.previous;
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# else
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# define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
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sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
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sethi %hi(_GLOBAL_OFFSET_TABLE_), %g2; \
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add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
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add %g2, %lo(_GLOBAL_OFFSET_TABLE_), %g2; \
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ldx [%g2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO); \
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st %o0, [%g7 + %g1], %tie_add(SYSCALL_ERROR_ERRNO); \
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jmpl %o7+8, %g0; \
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mov -1, %o0; \
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.previous;
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# endif
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#else
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# define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
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.global __errno_location; \
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.type __errno_location,@function; \
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save %sp, -192, %sp; \
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call __errno_location; \
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nop; \
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st %i0, [%o0]; \
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jmpl %i7+8, %g0; \
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restore %g0, -1, %o0; \
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.previous;
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#endif
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#define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY(name); \
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LOADSYSCALL(syscall_name); \
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ta 0x6d; \
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bcs,pn %xcc, __syscall_error_handler; \
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nop; \
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SYSCALL_ERROR_HANDLER
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#define PSEUDO_NOERRNO(name, syscall_name, args) \
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.text; \
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ENTRY(name); \
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LOADSYSCALL(syscall_name); \
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ta 0x6d
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#define PSEUDO_ERRVAL(name, syscall_name, args) \
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.text; \
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ENTRY(name); \
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LOADSYSCALL(syscall_name); \
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ta 0x6d
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#undef PSEUDO_END
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#define PSEUDO_END(name) \
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.size name,.-name
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#undef PSEUDO_END_NOERRNO
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#define PSEUDO_END_NOERRNO(name) \
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.size name,.-name
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#undef PSEUDO_END_ERRVAL
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#define PSEUDO_END_ERRVAL(name) \
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.size name,.-name
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#undef END
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#define END(name) \
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.size name,.-name
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/* Careful here! This "ret" define can interfere; use jmpl if unsure. */
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#define ret retl; nop
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#define ret_NOERRNO retl; nop
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#define ret_ERRVAL retl; nop
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#define r0 %o0
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#define r1 %o1
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#define MOVE(x,y) mov x, y
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#else /* __ASSEMBLER__ */
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#define __SYSCALL_STRING \
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"ta 0x6d;" \
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"bcc,pt %%xcc, 1f;" \
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" nop;" \
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"save %%sp, -192, %%sp;" \
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"call __errno_location;" \
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" nop;" \
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"st %%i0,[%%o0];" \
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"restore %%g0, -1, %%o0;" \
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"1:"
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#define __CLONE_SYSCALL_STRING \
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"ta 0x6d;" \
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"bcc,pt %%xcc, 1f;" \
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" sub %%o1, 1, %%o1;" \
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"save %%sp, -192, %%sp;" \
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"call __errno_location;" \
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" mov -1, %%i1;" \
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"st %%i0,[%%o0];" \
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"restore %%g0, -1, %%o0;" \
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"1:" \
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"and %%o0, %%o1, %%o0"
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#define __INTERNAL_SYSCALL_STRING \
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"ta 0x6d;" \
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"bcs,a,pt %%xcc, 1f;" \
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" sub %%g0, %%o0, %%o0;" \
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"1:"
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#define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
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"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
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"f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
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"f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
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"cc", "memory"
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#include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
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#endif /* __ASSEMBLER__ */
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/* This is the offset from the %sp to the backing store above the
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register windows. So if you poke stack memory directly you add this. */
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#define STACK_BIAS 2047
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#endif /* linux/sparc64/sysdep.h */
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