diff options
Diffstat (limited to 'libguile/__scm.h')
-rw-r--r-- | libguile/__scm.h | 39 |
1 files changed, 9 insertions, 30 deletions
diff --git a/libguile/__scm.h b/libguile/__scm.h index b5db4dcb4..f88475c8d 100644 --- a/libguile/__scm.h +++ b/libguile/__scm.h @@ -337,54 +337,33 @@ typedef void *scm_t_subr; -/* Setjmp and longjmp +/* scm_i_jmp_buf + * + * The corresponding SCM_I_SETJMP and SCM_I_LONGJMP are defined in the + * _scm.h private header. */ #if defined (vms) -/* VMS: Implement setjmp in terms of setjump. */ -typedef int jmp_buf[17]; -extern int setjump(jmp_buf env); -extern int longjump(jmp_buf env, int ret); -# define setjmp setjump -# define longjmp longjump +typedef int scm_i_jmp_buf[17]; #elif defined (_CRAY1) -/* Cray: Implement setjmp in terms of setjump. */ -typedef int jmp_buf[112]; -extern int setjump(jmp_buf env); -extern int longjump(jmp_buf env, int ret); -# define setjmp setjump -# define longjmp longjump +typedef int scm_i_jmp_buf[112]; #elif defined (__ia64__) -/* IA64: Implement setjmp in terms of getcontext. */ # include <signal.h> # include <ucontext.h> typedef struct { ucontext_t ctx; int fresh; } scm_i_jmp_buf; -# define SCM_I_SETJMP(JB) \ - ( (JB).fresh = 1, \ - getcontext (&((JB).ctx)), \ - ((JB).fresh ? ((JB).fresh = 0, 0) : 1) ) -# define SCM_I_LONGJMP(JB,VAL) scm_ia64_longjmp (&(JB), VAL) -void scm_ia64_longjmp (scm_i_jmp_buf *, int); #else -/* All other systems just use setjmp.h. */ # include <setjmp.h> - +typedef jmp_buf scm_i_jmp_buf; #endif -/* For any platform where SCM_I_SETJMP hasn't been defined in some - special way above, map SCM_I_SETJMP, SCM_I_LONGJMP and - scm_i_jmp_buf to setjmp, longjmp and jmp_buf. */ -#ifndef SCM_I_SETJMP -#define scm_i_jmp_buf jmp_buf -#define SCM_I_SETJMP setjmp -#define SCM_I_LONGJMP longjmp -#endif + + /* If stack is not longword aligned then */ |