JehanneOS/mksh
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to speed up mksh, get rid of arc4random(3) uses and use the LCG always;

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depend on ASLR for seeding
This commit is contained in:
tg
2010-07-04 17:33:58 +00:00
parent 2d6b4acba1
commit 4cbb5a9d46
8 changed files with 186 additions and 279 deletions
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59
Build.sh
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@ -1,5 +1,5 @@
#!/bin/sh
srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.452 2010/05/13 18:41:13 tg Exp $'
srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.453 2010/07/04 17:33:53 tg Exp $'
#-
# Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
# Thorsten Glaser <tg@mirbsd.org>
@ -1200,51 +1200,6 @@ EOF
#
# Environment: library functions
#
ac_testn arc4random <<-'EOF'
#include <sys/types.h>
#if HAVE_STDINT_H
#include <stdint.h>
#endif
extern u_int32_t arc4random(void);
int main(void) { return ((int)(arc4random() & 0xFF)); }
EOF
save_LIBS=$LIBS
if test 0 = $HAVE_ARC4RANDOM; then
test -f arc4random.c || if test -f "$srcdir/arc4random.c"; then
# ensure isolation of source directory from build directory
cp "$srcdir/arc4random.c" .
fi
if test -f arc4random.c; then
ac_testn can_uint8t '' "for uint8_t" <<-'EOF'
#include <sys/types.h>
#if HAVE_STDINT_H
#include <stdint.h>
#endif
int main(void) { return (1 - (uint8_t)1); }
EOF
test $HAVE_CAN_UINT8T = 1 || \
CPPFLAGS="$CPPFLAGS -D\"uint8_t=unsigned char\""
ac_header sys/sysctl.h
addsrcs '!' HAVE_ARC4RANDOM arc4random.c
HAVE_ARC4RANDOM=1
LIBS="$LIBS arc4random.c"
fi
fi
ac_cppflags ARC4RANDOM
ac_test arc4random_pushb arc4random 0 <<-'EOF'
#include <sys/types.h>
#if HAVE_STDINT_H
#include <stdint.h>
#endif
extern uint32_t arc4random_pushb(void *, size_t);
int main(int ac, char *av[]) { return ((int)(arc4random_pushb(*av,
(size_t)ac)) & 0xFF); }
EOF
LIBS=$save_LIBS
ac_testn flock_ex '' 'flock and mmap' <<-'EOF'
#include <sys/types.h>
#include <sys/file.h>
@ -1366,18 +1321,6 @@ EOF
#
save_CC=$CC; save_LDFLAGS=$LDFLAGS; save_LIBS=$LIBS
CC="$CC -c -o $tcfn"; LDFLAGS=; LIBS=
ac_test '!' arc4random_decl arc4random 1 'if arc4random() does not need to be declared' <<-'EOF'
#define MKSH_INCLUDES_ONLY
#include "sh.h"
long arc4random(void); /* this clashes if defined before */
int main(void) { return ((int)arc4random()); }
EOF
ac_test '!' arc4random_pushb_decl arc4random_pushb 1 'if arc4random_pushb() does not need to be declared' <<-'EOF'
#define MKSH_INCLUDES_ONLY
#include "sh.h"
int arc4random_pushb(char, int); /* this clashes if defined before */
int main(int ac, char *av[]) { return ((int)arc4random_pushb(**av, ac)); }
EOF
ac_test '!' flock_decl flock_ex 1 'if flock() does not need to be declared' <<-'EOF'
#define MKSH_INCLUDES_ONLY
#include "sh.h"