mirror of
https://github.com/fluencelabs/musl
synced 2025-04-25 07:12:15 +00:00
c72fc23843
with these changes, the members/types of mcontext_t and related stuff should closely match the glibc definitions. unlike glibc, however, the definitions here avoid using typedefs as much as possible and work directly with the underlying types, to minimize namespace pollution from signal.h in the default (_BSD_SOURCE) profile. this is a first step in improving compatibility with applications which poke at context/register information -- mainly debuggers, trace utilities, etc. additional definitions in ucontext.h and other headers may be needed later. if feature test macros are used to request a conforming namespace, mcontext_t is replaced with an opaque structure of the equivalent size and alignment; conforming programs cannot examine its contents anyway.
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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struct _fpstate {
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unsigned long cw, sw, tag, ipoff, cssel, dataoff, datasel;
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struct {
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unsigned short significand[4], exponent;
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} _st[8];
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unsigned long status;
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};
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struct sigcontext {
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unsigned short gs, __gsh, fs, __fsh, es, __esh, ds, __dsh;
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unsigned long edi, esi, ebp, esp, ebx, edx, ecx, eax;
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unsigned long trapno, err, eip;
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unsigned short cs, __csh;
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unsigned long eflags, esp_at_signal;
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unsigned short ss, __ssh;
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struct _fpstate *fpstate;
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unsigned long oldmask, cr2;
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};
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typedef struct {
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unsigned gregs[19];
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struct _fpstate *fpregs;
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unsigned long oldmask, cr2;
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} mcontext_t;
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#else
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typedef struct {
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unsigned __space[22];
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} mcontext_t;
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#endif
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typedef struct __ucontext {
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unsigned long uc_flags;
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struct __ucontext *uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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unsigned long __fpregs_mem[28];
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} ucontext_t;
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#define SA_NOCLDSTOP 1
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#define SA_NOCLDWAIT 2
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#define SA_SIGINFO 4
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#define SA_ONSTACK 0x08000000
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#define SA_RESTART 0x10000000
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#define SA_NODEFER 0x40000000
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#define SA_RESETHAND 0x80000000
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#define SA_RESTORER 0x04000000
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#endif
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#define SIGHUP 1
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#define SIGINT 2
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#define SIGQUIT 3
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#define SIGILL 4
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#define SIGTRAP 5
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#define SIGABRT 6
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#define SIGBUS 7
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#define SIGFPE 8
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#define SIGKILL 9
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#define SIGUSR1 10
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#define SIGSEGV 11
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#define SIGUSR2 12
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#define SIGPIPE 13
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#define SIGALRM 14
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#define SIGTERM 15
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#define SIGSTKFLT 16
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#define SIGCHLD 17
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#define SIGCONT 18
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#define SIGSTOP 19
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#define SIGTSTP 20
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#define SIGTTIN 21
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#define SIGTTOU 22
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#define SIGURG 23
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#define SIGXCPU 24
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#define SIGXFSZ 25
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#define SIGVTALRM 26
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#define SIGPROF 27
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#define SIGWINCH 28
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#define SIGIO 29
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#define SIGPOLL 29
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#define SIGPWR 30
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#define SIGSYS 31
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#define SIGUNUSED SIGSYS
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#define _NSIG 65
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