diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sysdep.h | 327 |
1 files changed, 0 insertions, 327 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h deleted file mode 100644 index 73c04084b7..0000000000 --- a/sysdeps/unix/sysv/linux/ia64/sysdep.h +++ /dev/null @@ -1,327 +0,0 @@ -/* Copyright (C) 1999-2024 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 - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <https://www.gnu.org/licenses/>. */ - -#ifndef _LINUX_IA64_SYSDEP_H -#define _LINUX_IA64_SYSDEP_H 1 - -#include <sysdeps/unix/sysdep.h> -#include <sysdeps/unix/sysv/linux/sysdep.h> -#include <sysdeps/ia64/sysdep.h> -#include <dl-sysdep.h> -#include <tls.h> -#include <asm/break.h> - -/* In order to get __set_errno() definition in INLINE_SYSCALL. */ -#ifndef __ASSEMBLER__ -#include <errno.h> -#endif - -/* As of GAS v2.4.90.0.7, including a ".align" directive inside a - function will cause bad unwind info to be emitted (GAS doesn't know - how to account for the padding introduced by the .align directive). - Turning on this macro will work around this bug by introducing the - necessary padding explicitly. */ -#define GAS_ALIGN_BREAKS_UNWIND_INFO - -/* For Linux we can use the system call table in the header file - /usr/include/asm/unistd.h - of the kernel. But these symbols do not follow the SYS_* syntax - so we have to redefine the `SYS_ify' macro here. */ -#undef SYS_ify -#define SYS_ify(syscall_name) __NR_##syscall_name - -#ifndef IA64_USE_NEW_STUB -# if defined USE_DL_SYSINFO && IS_IN (libc) -# define IA64_USE_NEW_STUB 1 -# else -# define IA64_USE_NEW_STUB 0 -# endif -#endif -#if IA64_USE_NEW_STUB && !USE_DL_SYSINFO -# error IA64_USE_NEW_STUB needs USE_DL_SYSINFO -#endif - -#ifdef __ASSEMBLER__ - -#undef CALL_MCOUNT -#ifdef PROF -# define CALL_MCOUNT \ - .data; \ -1: data8 0; /* XXX fixme: use .xdata8 once labels work */ \ - .previous; \ - .prologue; \ - .save ar.pfs, r40; \ - alloc out0 = ar.pfs, 8, 0, 4, 0; \ - mov out1 = gp; \ - .save rp, out2; \ - mov out2 = rp; \ - .body; \ - ;; \ - addl out3 = @ltoff(1b), gp; \ - br.call.sptk.many rp = _mcount \ - ;; -#else -# define CALL_MCOUNT /* Do nothing. */ -#endif - -/* Linux uses a negative return value to indicate syscall errors, unlike - most Unices, which use the condition codes' carry flag. - - Since version 2.1 the return value of a system call might be negative - even if the call succeeded. E.g., the `lseek' system call might return - a large offset. Therefore we must not anymore test for < 0, but test - for a real error by making sure the value in %d0 is a real error - number. Linus said he will make sure the no syscall returns a value - in -1 .. -4095 as a valid result so we can safely test with -4095. */ - -/* We don't want the label for the error handler to be visible in the symbol - table when we define it here. */ -#undef SYSCALL_ERROR_LABEL -#define SYSCALL_ERROR_LABEL __syscall_error - -#undef PSEUDO -#define PSEUDO(name, syscall_name, args) \ - ENTRY(name) \ - DO_CALL (SYS_ify(syscall_name)); \ - cmp.eq p6,p0=-1,r10; \ -(p6) br.cond.spnt.few __syscall_error; - -#define DO_CALL_VIA_BREAK(num) \ - mov r15=num; \ - break __IA64_BREAK_SYSCALL - -#if IA64_USE_NEW_STUB -# ifdef SHARED -# define DO_CALL(num) \ - .prologue; \ - adds r2 = SYSINFO_OFFSET, r13;; \ - ld8 r2 = [r2]; \ - .save ar.pfs, r11; \ - mov r11 = ar.pfs;; \ - .body; \ - mov r15 = num; \ - mov b7 = r2; \ - br.call.sptk.many b6 = b7;; \ - .restore sp; \ - mov ar.pfs = r11; \ - .prologue; \ - .body -# else /* !SHARED */ -# define DO_CALL(num) \ - .prologue; \ - mov r15 = num; \ - movl r2 = _dl_sysinfo;; \ - ld8 r2 = [r2]; \ - .save ar.pfs, r11; \ - mov r11 = ar.pfs;; \ - .body; \ - mov b7 = r2; \ - br.call.sptk.many b6 = b7;; \ - .restore sp; \ - mov ar.pfs = r11; \ - .prologue; \ - .body -# endif -#else -# define DO_CALL(num) DO_CALL_VIA_BREAK(num) -#endif - -#undef PSEUDO_END -#define PSEUDO_END(name) .endp C_SYMBOL_NAME(name); - -#undef PSEUDO_NOERRNO -#define PSEUDO_NOERRNO(name, syscall_name, args) \ - ENTRY(name) \ - DO_CALL (SYS_ify(syscall_name)); - -#undef PSEUDO_END_NOERRNO -#define PSEUDO_END_NOERRNO(name) .endp C_SYMBOL_NAME(name); - -#undef PSEUDO_ERRVAL -#define PSEUDO_ERRVAL(name, syscall_name, args) \ - ENTRY(name) \ - DO_CALL (SYS_ify(syscall_name)); \ - cmp.eq p6,p0=-1,r10; \ -(p6) mov r10=r8; - - -#undef PSEUDO_END_ERRVAL -#define PSEUDO_END_ERRVAL(name) .endp C_SYMBOL_NAME(name); - -#undef END -#define END(name) \ - .size C_SYMBOL_NAME(name), . - C_SYMBOL_NAME(name) ; \ - .endp C_SYMBOL_NAME(name) - -#define ret br.ret.sptk.few b0 -#define ret_NOERRNO ret -#define ret_ERRVAL ret - -#else /* not __ASSEMBLER__ */ - -#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL -#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1 - -#define BREAK_INSN_1(num) "break " #num ";;\n\t" -#define BREAK_INSN(num) BREAK_INSN_1(num) - -/* On IA-64 we have stacked registers for passing arguments. The - "out" registers end up being the called function's "in" - registers. - - Also, since we have plenty of registers we have two return values - from a syscall. r10 is set to -1 on error, whilst r8 contains the - (non-negative) errno on error or the return value on success. - */ - -#if IA64_USE_NEW_STUB - -# define INTERNAL_SYSCALL_NCS(name, nr, args...) \ -({ \ - LOAD_ARGS_##nr (args) \ - register long _r8 __asm ("r8"); \ - register long _r10 __asm ("r10"); \ - register long _r15 __asm ("r15") = name; \ - register void *_b7 __asm ("b7") = ((tcbhead_t *)__thread_self)->__private;\ - LOAD_REGS_##nr \ - /* \ - * Don't specify any unwind info here. We mark ar.pfs as \ - * clobbered. This will force the compiler to save ar.pfs \ - * somewhere and emit appropriate unwind info for that save. \ - */ \ - __asm __volatile ("br.call.sptk.many b6=%0;;\n" \ - : "=b"(_b7), "=r" (_r8), "=r" (_r10), "=r" (_r15) \ - ASM_OUTARGS_##nr \ - : "0" (_b7), "3" (_r15) ASM_ARGS_##nr \ - : "memory", "ar.pfs" ASM_CLOBBERS_##nr); \ - _r10 == -1 ? -_r8 : _r8; \ -}) - -#else /* !IA64_USE_NEW_STUB */ - -# define INTERNAL_SYSCALL_NCS(name, nr, args...) \ -({ \ - LOAD_ARGS_##nr (args) \ - register long _r8 asm ("r8"); \ - register long _r10 asm ("r10"); \ - register long _r15 asm ("r15") = name; \ - LOAD_REGS_##nr \ - __asm __volatile (BREAK_INSN (__IA64_BREAK_SYSCALL) \ - : "=r" (_r8), "=r" (_r10), "=r" (_r15) \ - ASM_OUTARGS_##nr \ - : "2" (_r15) ASM_ARGS_##nr \ - : "memory" ASM_CLOBBERS_##nr); \ - _r10 == -1 ? -_r8 : _r8; \ -}) - -#endif /* !IA64_USE_NEW_STUB */ - -#define INTERNAL_SYSCALL(name, nr, args...) \ - INTERNAL_SYSCALL_NCS (__NR_##name, nr, ##args) - -#define LOAD_ARGS_0() -#define LOAD_REGS_0 -#define LOAD_ARGS_1(a1) \ - long _arg1 = (long) (a1); \ - LOAD_ARGS_0 () -#define LOAD_REGS_1 \ - register long _out0 asm ("out0") = _arg1; \ - LOAD_REGS_0 -#define LOAD_ARGS_2(a1, a2) \ - long _arg2 = (long) (a2); \ - LOAD_ARGS_1 (a1) -#define LOAD_REGS_2 \ - register long _out1 asm ("out1") = _arg2; \ - LOAD_REGS_1 -#define LOAD_ARGS_3(a1, a2, a3) \ - long _arg3 = (long) (a3); \ - LOAD_ARGS_2 (a1, a2) -#define LOAD_REGS_3 \ - register long _out2 asm ("out2") = _arg3; \ - LOAD_REGS_2 -#define LOAD_ARGS_4(a1, a2, a3, a4) \ - long _arg4 = (long) (a4); \ - LOAD_ARGS_3 (a1, a2, a3) -#define LOAD_REGS_4 \ - register long _out3 asm ("out3") = _arg4; \ - LOAD_REGS_3 -#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ - long _arg5 = (long) (a5); \ - LOAD_ARGS_4 (a1, a2, a3, a4) -#define LOAD_REGS_5 \ - register long _out4 asm ("out4") = _arg5; \ - LOAD_REGS_4 -#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ - long _arg6 = (long) (a6); \ - LOAD_ARGS_5 (a1, a2, a3, a4, a5) -#define LOAD_REGS_6 \ - register long _out5 asm ("out5") = _arg6; \ - LOAD_REGS_5 - -#define ASM_OUTARGS_0 -#define ASM_OUTARGS_1 ASM_OUTARGS_0, "=r" (_out0) -#define ASM_OUTARGS_2 ASM_OUTARGS_1, "=r" (_out1) -#define ASM_OUTARGS_3 ASM_OUTARGS_2, "=r" (_out2) -#define ASM_OUTARGS_4 ASM_OUTARGS_3, "=r" (_out3) -#define ASM_OUTARGS_5 ASM_OUTARGS_4, "=r" (_out4) -#define ASM_OUTARGS_6 ASM_OUTARGS_5, "=r" (_out5) - -#if IA64_USE_NEW_STUB -#define ASM_ARGS_0 -#define ASM_ARGS_1 ASM_ARGS_0, "4" (_out0) -#define ASM_ARGS_2 ASM_ARGS_1, "5" (_out1) -#define ASM_ARGS_3 ASM_ARGS_2, "6" (_out2) -#define ASM_ARGS_4 ASM_ARGS_3, "7" (_out3) -#define ASM_ARGS_5 ASM_ARGS_4, "8" (_out4) -#define ASM_ARGS_6 ASM_ARGS_5, "9" (_out5) -#else -#define ASM_ARGS_0 -#define ASM_ARGS_1 ASM_ARGS_0, "3" (_out0) -#define ASM_ARGS_2 ASM_ARGS_1, "4" (_out1) -#define ASM_ARGS_3 ASM_ARGS_2, "5" (_out2) -#define ASM_ARGS_4 ASM_ARGS_3, "6" (_out3) -#define ASM_ARGS_5 ASM_ARGS_4, "7" (_out4) -#define ASM_ARGS_6 ASM_ARGS_5, "8" (_out5) -#endif - -#define ASM_CLOBBERS_0 ASM_CLOBBERS_1, "out0" -#define ASM_CLOBBERS_1 ASM_CLOBBERS_2, "out1" -#define ASM_CLOBBERS_2 ASM_CLOBBERS_3, "out2" -#define ASM_CLOBBERS_3 ASM_CLOBBERS_4, "out3" -#define ASM_CLOBBERS_4 ASM_CLOBBERS_5, "out4" -#define ASM_CLOBBERS_5 ASM_CLOBBERS_6, "out5" -#define ASM_CLOBBERS_6_COMMON , "out6", "out7", \ - /* Non-stacked integer registers, minus r8, r10, r15. */ \ - "r2", "r3", "r9", "r11", "r13", "r14", "r16", "r17", "r18", \ - "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", \ - "r28", "r29", "r30", "r31", \ - /* Predicate registers. */ \ - "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15", \ - /* Non-rotating fp registers. */ \ - "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ - /* Branch registers. */ \ - "b6" - -#if IA64_USE_NEW_STUB -# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON -#else -# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7" -#endif - -#endif /* not __ASSEMBLER__ */ - -#endif /* linux/ia64/sysdep.h */ |