RepoMirrors
/
musl
mirror of git://git.musl-libc.org/musl
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
musl/include/ucontext.h

26 lines
495 B
C
Raw Normal View History

initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _UCONTEXT_H
#define _UCONTEXT_H
#ifdef __cplusplus
extern "C" {
#endif
default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-08 03:13:55 +00:00
#include <features.h>
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#include <signal.h>
fixup mcontext stuff to expost gregset_t/fpregset_t as appropriate
2012-11-26 04:04:23 +00:00
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define NGREG (sizeof(gregset_t)/sizeof(greg_t))
support the ugly and deprecated ucontext and sigcontext header stuff... only the structures, not the functions from ucontext.h, are supported at this point. the main goal of this commit is to make modern gcc with dwarf2 unwinding build without errors. honestly, it probably doesn't matter how we define these as long as they have members with the right names to prevent errors while compiling libgcc. the only time they will be used is for propagating exceptions across signal-handler boundaries, which invokes undefined behavior anyway. but as-is, they're probably correct and may be useful to various low-level applications dealing with virtualization, jit code generation, and so on...
2011-02-19 03:03:03 +00:00
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
avoid errors in ucontext.h when no feature test macros are defined
2011-06-29 21:13:01 +00:00
struct __ucontext;
int getcontext(struct __ucontext *);
fix signature of function accepted by makecontext This parameter was incorrectly declared to be a pointer to a function accepting zero parameters. The intent of makecontext is that it is possible to pass integer parameters to the function, so this should have been a pointer to a function accepting an unspecified set of parameters.
2019-04-05 17:26:17 +00:00
void makecontext(struct __ucontext *, void (*)(), int, ...);
consistency: use struct __ucontext instead of ucontext_t in prototypes this is necessary to avoid build errors if feature test macros are not properly defined when including ucontext.h
2011-07-31 04:10:29 +00:00
int setcontext(const struct __ucontext *);
avoid errors in ucontext.h when no feature test macros are defined
2011-06-29 21:13:01 +00:00
int swapcontext(struct __ucontext *, const struct __ucontext *);
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifdef __cplusplus
}
#endif
#endif