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Diffstat (limited to 'man3/makecontext.3')
| -rw-r--r-- | man3/makecontext.3 | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/man3/makecontext.3 b/man3/makecontext.3 index 1815b227de..0a6a96dddb 100644 --- a/man3/makecontext.3 +++ b/man3/makecontext.3 @@ -22,7 +22,7 @@ .\" the source, must acknowledge the copyright and authors of this work. .\" 2006-08-02, mtk, Added example program .\" -.TH MAKECONTEXT 3 2008-08-06 "GNU" "Linux Programmer's Manual" +.TH MAKECONTEXT 3 2008-11-07 "GNU" "Linux Programmer's Manual" .SH NAME makecontext, swapcontext \- manipulate user context .SH SYNOPSIS @@ -113,6 +113,22 @@ to be used as the stack, regardless of the direction of growth of the stack. Thus, it is not necessary for the user program to worry about this direction. + +On architectures where +.I int +and pointer types are the same size +(e.g., x86-32, where both types are 32 bits), +you may be able to get away with passing pointers as arguments to +.BR makecontext () +following +.IR argc . +However, doing this is not guaranteed to be portable, +is undefined according to the standards, +and won't work on architectures where pointers are larger than +.IR int s. +Nevertheless, starting with version 2.8 glibc makes some changes to +.BR makecontext (3), +to permit this on some 64-bit architectures (e.g., x86-64). .SH EXAMPLE .PP The example program below demonstrates the use of |