4 static inline os_context_t *arch_os_get_context(void **void_context) {
5 return (os_context_t *) *void_context;
8 /* The different BSD variants have diverged in exactly where they
9 * store signal context information, but at least they tend to use the
10 * same stems to name the structure fields, so by using this macro we
11 * can share a fair amount of code between different variants. */
12 #if defined __FreeBSD__
13 #define CONTEXT_ADDR_FROM_STEM(stem) &context->uc_mcontext.mc_ ## stem
14 #elif defined(__OpenBSD__)
15 #define CONTEXT_ADDR_FROM_STEM(stem) &context->sc_ ## stem
16 #elif defined __NetBSD__
17 #define CONTEXT_ADDR_FROM_STEM(stem) &((context)->uc_mcontext.__gregs[_REG_ ## stem])
19 #error unsupported BSD variant
22 #if defined(LISP_FEATURE_SB_THREAD)
24 #if defined LISP_FEATURE_FREEBSD
25 /* FIXME: why is this only done for SB-THREAD? */
26 #define RESTORE_FP_CONTROL_FROM_CONTEXT
27 void os_restore_fp_control(os_context_t *context);
32 #endif /* _X86_BSD_OS_H */