summaryrefslogtreecommitdiff
path: root/libguile/control.c
diff options
context:
space:
mode:
Diffstat (limited to 'libguile/control.c')
-rw-r--r--libguile/control.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/libguile/control.c b/libguile/control.c
index 66bb5f8a8..bcbc6a136 100644
--- a/libguile/control.c
+++ b/libguile/control.c
@@ -22,6 +22,7 @@
#include "libguile/_scm.h"
#include "libguile/control.h"
+#include "libguile/vm.h"
@@ -47,6 +48,36 @@ SCM_DEFINE (scm_atprompt, "@prompt", 4, 0, 0,
}
#undef FUNC_NAME
+SCM
+scm_c_make_prompt (SCM vm, SCM k, SCM handler, SCM pre_unwind,
+ scm_t_uint8 inline_p, scm_t_uint8 escape_only_p)
+{
+ scm_t_bits tag;
+ SCM ret;
+ struct scm_prompt_registers *regs;
+
+ tag = scm_tc7_prompt;
+ if (inline_p)
+ tag |= SCM_F_PROMPT_INLINE;
+ if (escape_only_p)
+ tag |= SCM_F_PROMPT_ESCAPE;
+ ret = scm_words (tag, 6);
+
+ regs = scm_gc_malloc_pointerless (sizeof (*regs), "prompt registers");
+ regs->fp = SCM_VM_DATA (vm)->fp;
+ regs->sp = SCM_VM_DATA (vm)->sp;
+ regs->ip = SCM_VM_DATA (vm)->ip;
+
+ SCM_SET_CELL_OBJECT (ret, 1, k);
+ SCM_SET_CELL_WORD (ret, 2, (scm_t_bits)regs);
+ SCM_SET_CELL_OBJECT (ret, 3, scm_i_dynwinds ());
+ SCM_SET_CELL_OBJECT (ret, 4, handler);
+ SCM_SET_CELL_OBJECT (ret, 5, pre_unwind);
+
+ return ret;
+}
+
+
static void