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63fb881a04
Daniel Jacobowitz <dan@codesourcery.com> Richard Sandiford <rdsandiford@googlemail.com> * sysdeps/mips/dl-dtprocnum.h (DT_MIPS_NUM): Redefine. * sysdeps/mips/dl-lookup.c: New. * sysdeps/mips/do-lookup.h: New. * sysdeps/mips/dl-machine.h (ELF_MACHINE_NO_PLT): Remove definition. (STO_MIPS_PLT, R_MIPS_COPY, R_MIPS_JUMP_SLOT, DT_MIPS_PLTGOT): Define if needed. (ELF_MACHINE_JMP_SLOT): Alter definition and update comment. (elf_machine_type_class): Likewise. (ELF_MACHINE_PLT_REL): Define. (elf_machine_fixup_plt): New. (elf_machine_plt_value): New. (elf_machine_reloc): Handle jump slot and copy relocations. (elf_machine_lazy_rel): Point relocation place at PLT if required. (RESOLVE_GOTSYM): Take a relocation type argument. (elf_machine_got_rel): Bind lazy stubs directly to their target if !lazy. Skip lazy binding for PLT symbols. (elf_machine_runtime_setup): Fill in .got.plt header. * sysdeps/mips/dl-trampoline.c (IFNEWABI): New macro. (ELF_DL_PLT_FRAME_SIZE, ELF_DL_PLT_SAVE_ARG_REGS, ELF_DL_PLT_RESTORE_ARG_REGS): Define. (_dl_runtime_pltresolve): New. * sysdeps/mips/bits/linkmap.h: New file. * sysdeps/mips/tls-macros.h: Load $gp as required. Merge 32-bit and 64-bit versions. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (SYSCALL_ERROR_LABEL): Delete definition. * sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h (PSEUDO_CPLOAD, PSEUDO_ERRJMP, PSEUDO_SAVEGP, PSEUDO_LOADGP): Define. (PSEUDO): Use them. Move outside __PIC__. (PSEUDO_JMP): New. (CENABLE, CDISABLE): Use it.
291 lines
8.7 KiB
C
291 lines
8.7 KiB
C
/* Copyright (C) 2000, 2002, 2003, 2004, 2005 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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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_MIPS_MIPS32_SYSDEP_H
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#define _LINUX_MIPS_MIPS32_SYSDEP_H 1
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/* There is some commonality. */
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#include <sysdeps/unix/mips/mips32/sysdep.h>
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#include <tls.h>
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/* For Linux we can use the system call table in the header file
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/usr/include/asm/unistd.h
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of the kernel. But these symbols do not follow the SYS_* syntax
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so we have to redefine the `SYS_ify' macro here. */
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#undef SYS_ify
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#ifdef __STDC__
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# define SYS_ify(syscall_name) __NR_##syscall_name
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#else
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# define SYS_ify(syscall_name) __NR_/**/syscall_name
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#endif
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#ifndef __ASSEMBLER__
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/* Define a macro which expands into the inline wrapper code for a system
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call. */
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#undef INLINE_SYSCALL
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#define INLINE_SYSCALL(name, nr, args...) \
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({ INTERNAL_SYSCALL_DECL(err); \
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long result_var = INTERNAL_SYSCALL (name, err, nr, args); \
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if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
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result_var = -1L; \
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} \
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result_var; })
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#undef INTERNAL_SYSCALL_DECL
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#define INTERNAL_SYSCALL_DECL(err) long err
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#undef INTERNAL_SYSCALL_ERROR_P
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#define INTERNAL_SYSCALL_ERROR_P(val, err) ((long) (err))
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#undef INTERNAL_SYSCALL_ERRNO
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#define INTERNAL_SYSCALL_ERRNO(val, err) (val)
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#undef INTERNAL_SYSCALL
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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internal_syscall##nr (, "li\t$2, %2\t\t\t# " #name "\n\t", \
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"i" (SYS_ify (name)), err, args)
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#undef INTERNAL_SYSCALL_NCS
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#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
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internal_syscall##nr (= number, , "r" (__v0), err, args)
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#define internal_syscall0(ncs_init, cs_init, input, err, dummy...) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a3 asm("$7"); \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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cs_init \
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"syscall\n\t" \
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".set reorder" \
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: "=r" (__v0), "=r" (__a3) \
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: input \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall1(ncs_init, cs_init, input, err, arg1) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a3 asm("$7"); \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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cs_init \
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"syscall\n\t" \
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".set reorder" \
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: "=r" (__v0), "=r" (__a3) \
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: input, "r" (__a0) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall2(ncs_init, cs_init, input, err, arg1, arg2) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a3 asm("$7"); \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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cs_init \
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"syscall\n\t" \
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".set\treorder" \
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: "=r" (__v0), "=r" (__a3) \
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: input, "r" (__a0), "r" (__a1) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall3(ncs_init, cs_init, input, err, arg1, arg2, arg3)\
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({ \
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long _sys_result; \
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\
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a2 asm("$6") = (long) arg3; \
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register long __a3 asm("$7"); \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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cs_init \
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"syscall\n\t" \
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".set\treorder" \
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: "=r" (__v0), "=r" (__a3) \
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: input, "r" (__a0), "r" (__a1), "r" (__a2) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall4(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4)\
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({ \
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long _sys_result; \
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\
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a2 asm("$6") = (long) arg3; \
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register long __a3 asm("$7") = (long) arg4; \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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cs_init \
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"syscall\n\t" \
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".set\treorder" \
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: "=r" (__v0), "+r" (__a3) \
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: input, "r" (__a0), "r" (__a1), "r" (__a2) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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/* We need to use a frame pointer for the functions in which we
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adjust $sp around the syscall, or debug information and unwind
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information will be $sp relative and thus wrong during the syscall. As
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of GCC 3.4.3, this is sufficient. */
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#define FORCE_FRAME_POINTER alloca (4)
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#define internal_syscall5(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5)\
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({ \
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long _sys_result; \
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\
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FORCE_FRAME_POINTER; \
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a2 asm("$6") = (long) arg3; \
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register long __a3 asm("$7") = (long) arg4; \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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"subu\t$29, 32\n\t" \
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"sw\t%6, 16($29)\n\t" \
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cs_init \
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"syscall\n\t" \
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"addiu\t$29, 32\n\t" \
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".set\treorder" \
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: "=r" (__v0), "+r" (__a3) \
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: input, "r" (__a0), "r" (__a1), "r" (__a2), \
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"r" ((long)arg5) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall6(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5, arg6)\
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({ \
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long _sys_result; \
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\
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FORCE_FRAME_POINTER; \
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a2 asm("$6") = (long) arg3; \
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register long __a3 asm("$7") = (long) arg4; \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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"subu\t$29, 32\n\t" \
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"sw\t%6, 16($29)\n\t" \
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"sw\t%7, 20($29)\n\t" \
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cs_init \
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"syscall\n\t" \
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"addiu\t$29, 32\n\t" \
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".set\treorder" \
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: "=r" (__v0), "+r" (__a3) \
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: input, "r" (__a0), "r" (__a1), "r" (__a2), \
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"r" ((long)arg5), "r" ((long)arg6) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define internal_syscall7(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
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({ \
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long _sys_result; \
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\
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FORCE_FRAME_POINTER; \
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{ \
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register long __v0 asm("$2") ncs_init; \
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register long __a0 asm("$4") = (long) arg1; \
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register long __a1 asm("$5") = (long) arg2; \
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register long __a2 asm("$6") = (long) arg3; \
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register long __a3 asm("$7") = (long) arg4; \
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__asm__ volatile ( \
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".set\tnoreorder\n\t" \
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"subu\t$29, 32\n\t" \
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"sw\t%6, 16($29)\n\t" \
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"sw\t%7, 20($29)\n\t" \
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"sw\t%8, 24($29)\n\t" \
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cs_init \
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"syscall\n\t" \
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"addiu\t$29, 32\n\t" \
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".set\treorder" \
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: "=r" (__v0), "+r" (__a3) \
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: input, "r" (__a0), "r" (__a1), "r" (__a2), \
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"r" ((long)arg5), "r" ((long)arg6), "r" ((long)arg7) \
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: __SYSCALL_CLOBBERS); \
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err = __a3; \
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_sys_result = __v0; \
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} \
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_sys_result; \
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})
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#define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", \
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"$14", "$15", "$24", "$25", "memory"
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#endif /* __ASSEMBLER__ */
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/* Pointer mangling is not yet supported for MIPS. */
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#define PTR_MANGLE(var) (void) (var)
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#define PTR_DEMANGLE(var) (void) (var)
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#endif /* linux/mips/mips32/sysdep.h */
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