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-rw-r--r--libc/sysdeps/linux/i386/bits/setjmp.h195
-rw-r--r--libc/sysdeps/linux/i386/bits/sigset.h125
-rw-r--r--libc/sysdeps/linux/i386/setjmp.S145
3 files changed, 213 insertions, 252 deletions
diff --git a/libc/sysdeps/linux/i386/bits/setjmp.h b/libc/sysdeps/linux/i386/bits/setjmp.h
index 20786d642..2f5b44531 100644
--- a/libc/sysdeps/linux/i386/bits/setjmp.h
+++ b/libc/sysdeps/linux/i386/bits/setjmp.h
@@ -1,176 +1,41 @@
-#if defined(__arm__) || defined(__thumb__)
-/*
- * All callee preserved registers:
- * v1 - v7, fp, ip, sp, lr, f4, f5, f6, f7
- */
-#define _JBLEN 23
-#endif
-
-#ifdef __sparc__
-/*
- * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
- * All else recovered by under/over(flow) handling.
- */
-#define _JBLEN 13
-#endif
-
-/* necv70 was 9 as well. */
-
-#ifdef __mc68000__
-/*
- * onsstack,sigmask,sp,pc,psl,d2-d7,a2-a6,
- * fp2-fp7 for 68881.
- * All else recovered by under/over(flow) handling.
- */
-#define _JBLEN 34
-#endif
-
-#if defined(__Z8001__) || defined(__Z8002__)
-/* 16 regs + pc */
-#define _JBLEN 20
-#endif
-
-#ifdef _AM29K
-/*
- * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
- * All else recovered by under/over(flow) handling.
- */
-#define _JBLEN 9
-#endif
-
-#ifdef __i386__
-#ifdef __unix__
-# define _JBLEN 36
-#elif defined(_WIN32)
-#define _JBLEN (13 * 4)
-#else
-#include "setjmp-dj.h"
-#endif
-#endif
-
-#ifdef __i960__
-#define _JBLEN 35
-#endif
-
-#ifdef __M32R__
-/* Only 8 words are currently needed. 10 gives us some slop if we need
- to expand. */
-#define _JBLEN 10
-#endif
-
-#ifdef __mips__
-#define _JBLEN 11
-#endif
-
-#ifdef __m88000__
-#define _JBLEN 21
-#endif
-
-#ifdef __H8300__
-#define _JBLEN 5
-typedef int jmp_buf[_JBLEN];
-#endif
-
-#ifdef __H8300H__
-/* same as H8/300 but registers are twice as big */
-#define _JBLEN 5
-#define _JBTYPE long
-#endif
+/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-#ifdef __H8300S__
-/* same as H8/300 but registers are twice as big */
-#define _JBLEN 5
-#define _JBTYPE long
-#endif
-
-#ifdef __H8500__
-#define _JBLEN 4
-#endif
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-#ifdef __sh__
-#define _JBLEN 20
-#endif
+ 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
+ Library General Public License for more details.
-#ifdef __v800
-#define _JBLEN 28
-#endif
-
-#ifdef __PPC__
-#define _JBLEN 32
-#define _JBTYPE double
-#endif
-
-#ifdef __hppa__
-/* %r30, %r2-%r18, %r27, pad, %fr12-%fr15.
- Note space exists for the FP registers, but they are not
- saved. */
-#define _JBLEN 28
-#endif
-
-#if defined(mn10300) || defined(mn10200)
-/* A guess */
-#define _JBLEN 10
-#endif
-
-#ifdef __v850
-/* I think our setjmp is saving 15 regs at the moment. Gives us one word
- slop if we need to expand. */
-#define _JBLEN 16
-#endif
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+/* Define the machine-dependent type `jmp_buf'. Intel 386 version. */
-#ifdef __D10V__
-#define _JBLEN 8
+#ifndef _SETJMP_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
#endif
-/* start-sanitize-d30v */
-#ifdef __D30V__
-#define _JBLEN (64 /* GPR */ + (2*2) /* ACs */ + 18 /* CRs */)
+#if defined __USE_MISC || defined _ASM
+# define JB_BX 0
+# define JB_SI 1
+# define JB_DI 2
+# define JB_BP 3
+# define JB_SP 4
+# define JB_PC 5
#endif
-/* end-sanitize-d30v */
-#ifdef _JBLEN
-#ifdef _JBTYPE
-typedef _JBTYPE jmp_buf[_JBLEN];
-#else
-typedef int jmp_buf[_JBLEN];
+#ifndef _ASM
+typedef int __jmp_buf[6];
#endif
-#ifdef __CYGWIN32__
-#include <signal.h>
-
-/* POSIX sigsetjmp/siglongjmp macros */
-typedef int sigjmp_buf[_JBLEN+2];
-
-#define _SAVEMASK _JBLEN
-#define _SIGMASK (_JBLEN+1)
-
-#define sigsetjmp(env, savemask) (env[_SAVEMASK] = savemask,\
- sigprocmask (SIG_SETMASK, 0, (sigset_t *) &env[_SIGMASK]),\
- setjmp (env))
-
-#define siglongjmp(env, val) (((env[_SAVEMASK])?\
- sigprocmask (SIG_SETMASK, (sigset_t *) &env[_SIGMASK], 0):0),\
- longjmp (env, val))
-
-#endif /* __CYGWIN32__*/
-
-#if defined(__linux__) && defined(__mc68000__)
-#include <signal.h>
-
-/* POSIX sigsetjmp/siglongjmp macros */
-typedef int sigjmp_buf[_JBLEN];
-
-#define _SAVEMASK 4
-#define _SIGMASK 1
-
-#define sigsetjmp(env, savemask) (env[_SAVEMASK] = savemask,\
- sigprocmask (SIG_SETMASK, 0, (sigset_t *) &env[_SIGMASK]),\
- setjmp (env))
-
-#define siglongjmp(env, val) (((env[_SAVEMASK])?\
- sigprocmask (SIG_SETMASK, (sigset_t *) &env[_SIGMASK], 0):0),\
- longjmp (env, val))
-
-#endif /* __linux__*/
-#endif
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((void *) (address) < (void *) (jmpbuf)[JB_SP])
diff --git a/libc/sysdeps/linux/i386/bits/sigset.h b/libc/sysdeps/linux/i386/bits/sigset.h
new file mode 100644
index 000000000..66a9c51c5
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/sigset.h
@@ -0,0 +1,125 @@
+/* __sig_atomic_t, __sigset_t, and related definitions. Linux version.
+ Copyright (C) 1991, 1992, 1994, 1996, 1997 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _SIGSET_H_types
+# define _SIGSET_H_types 1
+
+typedef int __sig_atomic_t;
+
+/* A `sigset_t' has a bit for each signal. */
+
+# define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
+typedef struct
+ {
+ unsigned long int __val[_SIGSET_NWORDS];
+ } __sigset_t;
+
+#endif
+
+
+/* We only want to define these functions if <signal.h> was actually
+ included; otherwise we were included just to define the types. Since we
+ are namespace-clean, it wouldn't hurt to define extra macros. But
+ trouble can be caused by functions being defined (e.g., any global
+ register vars declared later will cause compilation errors). */
+
+#if !defined _SIGSET_H_fns && defined _SIGNAL_H
+# define _SIGSET_H_fns 1
+
+# ifndef _EXTERN_INLINE
+# define _EXTERN_INLINE extern __inline
+# endif
+
+/* Return a mask that includes the bit for SIG only. */
+# define __sigmask(sig) \
+ (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))
+
+/* Return the word index for SIG. */
+# define __sigword(sig) (((sig) - 1) / (8 * sizeof (unsigned long int)))
+
+# if defined __GNUC__ && __GNUC__ >= 2
+# define __sigemptyset(set) \
+ (__extension__ ({ int __cnt = _SIGSET_NWORDS; \
+ sigset_t *__set = (set); \
+ while (--__cnt >= 0) __set->__val[__cnt] = 0; \
+ 0; }))
+# define __sigfillset(set) \
+ (__extension__ ({ int __cnt = _SIGSET_NWORDS; \
+ sigset_t *__set = (set); \
+ while (--__cnt >= 0) __set->__val[__cnt] = ~0UL; \
+ 0; }))
+
+# ifdef __USE_GNU
+/* The POSIX does not specify for handling the whole signal set in one
+ command. This is often wanted and so we define three more functions
+ here. */
+# define __sigisemptyset(set) \
+ (__extension__ ({ int __cnt = _SIGSET_NWORDS; \
+ const sigset_t *__set = (set); \
+ int __ret = __set->__val[--__cnt]; \
+ while (!__ret && --__cnt >= 0) \
+ __ret = __set->__val[__cnt]; \
+ __ret == 0; }))
+# define __sigandset(dest, left, right) \
+ (__extension__ ({ int __cnt = _SIGSET_NWORDS; \
+ sigset_t *__dest = (dest); \
+ const sigset_t *__left = (left); \
+ const sigset_t *__right = (right); \
+ while (--__cnt >= 0) \
+ __dest->__val[__cnt] = (__left->__val[__cnt] \
+ & __right->__val[__cnt]); \
+ 0; }))
+# define __sigorset(dest, left, right) \
+ (__extension__ ({ int __cnt = _SIGSET_NWORDS; \
+ sigset_t *__dest = (dest); \
+ const sigset_t *__left = (left); \
+ const sigset_t *__right = (right); \
+ while (--__cnt >= 0) \
+ __dest->__val[__cnt] = (__left->__val[__cnt] \
+ | __right->__val[__cnt]); \
+ 0; }))
+# endif
+# endif
+
+/* These functions needn't check for a bogus signal number -- error
+ checking is done in the non __ versions. */
+
+extern int __sigismember (__const __sigset_t *, int);
+extern int __sigaddset (__sigset_t *, int);
+extern int __sigdelset (__sigset_t *, int);
+
+# ifdef __USE_EXTERN_INLINES
+# define __SIGSETFN(NAME, BODY, CONST) \
+ _EXTERN_INLINE int \
+ NAME (CONST __sigset_t *__set, int __sig) \
+ { \
+ unsigned long int __mask = __sigmask (__sig); \
+ unsigned long int __word = __sigword (__sig); \
+ return BODY; \
+ }
+
+__SIGSETFN (__sigismember, (__set->__val[__word] & __mask) ? 1 : 0, __const)
+__SIGSETFN (__sigaddset, ((__set->__val[__word] |= __mask), 0), )
+__SIGSETFN (__sigdelset, ((__set->__val[__word] &= ~__mask), 0), )
+
+# undef __SIGSETFN
+# endif
+
+
+#endif /* ! _SIGSET_H_fns. */
diff --git a/libc/sysdeps/linux/i386/setjmp.S b/libc/sysdeps/linux/i386/setjmp.S
index 3ff05425f..d6f2cba8b 100644
--- a/libc/sysdeps/linux/i386/setjmp.S
+++ b/libc/sysdeps/linux/i386/setjmp.S
@@ -1,88 +1,59 @@
-/* These are predefined by new versions of GNU cpp. */
-
-#ifndef __USER_LABEL_PREFIX__
-#define __USER_LABEL_PREFIX__ _
-#endif
-
-#ifndef __REGISTER_PREFIX__
-#define __REGISTER_PREFIX__
-#endif
-
-/* ANSI concatenation macros. */
-
-#define CONCAT1(a, b) CONCAT2(a, b)
-#define CONCAT2(a, b) a ## b
-
-/* Use the right prefix for global labels. */
-
-#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
-
-/* Use the right prefix for registers. */
-
-#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
-
-#define d0 REG (d0)
-#define d1 REG (d1)
-#define d2 REG (d2)
-#define d3 REG (d3)
-#define d4 REG (d4)
-#define d5 REG (d5)
-#define d6 REG (d6)
-#define d7 REG (d7)
-#define a0 REG (a0)
-#define a1 REG (a1)
-#define a2 REG (a2)
-#define a3 REG (a3)
-#define a4 REG (a4)
-#define a5 REG (a5)
-#define a6 REG (a6)
-#define fp REG (fp)
-#define sp REG (sp)
-
-.global SYM (setjmp)
-.global SYM (longjmp)
-
-SYM (setjmp):
- moveal sp@(4),a0
- movel sp@(0),a0@(12)
- movel sp,a0@(8)
- moveml d2-d7/a2-a6,a0@(20)
- clrl d0
- rts
-
-SYM (longjmp):
- moveal sp@(4),a0
- movel sp@(8),d0
- bne 1f
- movel #1,d0
-1:
- moveml a0@(20),d2-d7/a2-a6
- moveal a0@(8),sp
- movel a0@(12),sp@
- rts
-
-#ifdef M68881
-.global SYM (setjmp_68881)
-.global SYM (longjmp_68881)
-
-SYM (setjmp_68881):
- moveal sp@(4),a0
- movel sp@(0),a0@(12)
- movel sp,a0@(8)
- moveml d2-d7/a2-a6,a0@(20)
- fmovemx fp2-fp7,a0@(64)
- clrl d0
- rts
-
-SYM (longjmp_68881):
- moveal sp@(4),a0
- fmovemx a0@(64),fp2-fp7
- movel sp@(8),d0
- bne 1f
- movel #1,d0
-1:
- moveml a0@(20),d2-d7/a2-a6
- moveal a0@(8),sp
- movel a0@(12),sp@
- rts
+/* setjmp for i386.
+ Copyright (C) 1995, 1996, 1997 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+#define _ASM
+#define _SETJMP_H
+#include <machine/setjmp.h>
+
+ENTRY (__setjmp)
+ popl %eax /* Pop return address. */
+ popl %ecx /* Pop jmp_buf. */
+ pushl $0 /* Push zero argument. */
+ pushl %ecx /* Push jmp_buf. */
+ pushl %eax /* Push back return address. */
+
+ENTRY (__sigsetjmp)
+ movl 4(%esp), %eax /* User's jmp_buf in %eax. */
+ /* Save registers. */
+ movl %ebx, (JB_BX*4)(%eax)
+ movl %esi, (JB_SI*4)(%eax)
+ movl %edi, (JB_DI*4)(%eax)
+ movl %ebp, (JB_BP*4)(%eax)
+ leal 4(%esp), %ecx /* Save SP as it will be after we return. */
+ movl %ecx, (JB_SP*4)(%eax)
+ movl 0(%esp), %ecx /* Save PC we are returning to now. */
+ movl %ecx, (JB_PC*4)(%eax)
+
+ /* Make a tail call to __sigjmp_save; it takes the same args. */
+#ifdef PIC
+ /* We cannot use the PLT, because it requires that %ebx be set, but
+ we can't save and restore our caller's value. Instead, we do an
+ indirect jump through the GOT, using for the temporary register
+ %ecx, which is call-clobbered. */
+ call L(here)
+L(here):
+ popl %ecx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ecx
+ movl C_SYMBOL_NAME(__sigjmp_save@GOT)(%ecx), %ecx
+ jmp *%ecx
+#else
+ jmp __sigjmp_save
#endif
+.size __sigsetjmp,.-__sigsetjmp;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 23:41:00 +0000