Add signal() and raise()

git-svn-id: svn://svn.cc65.org/cc65/trunk@2017 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-03-14 00:02:58 +00:00
parent a39db251a2
commit c556f14e66
4 changed files with 139 additions and 0 deletions
--- a/libsrc/common/raise.s
+++ b/libsrc/common/raise.s
@@ -0,0 +1,44 @@
+;
+; Ullrich von Bassewitz, 2003-03-14
+;
+; int __fastcall__ raise (int sig);
+;
+
+        .import         jmpvec
+
+        .include        "signal.inc"
+
+
+;----------------------------------------------------------------------------
+; int __fastcall__ raise (int sig);
+
+
+_raise:
+        cpx     #0
+        bne     invalidsig
+        cmp     #SIGCOUNT
+        bcs     invalidsig
+
+; Save the signal number low byte, then setup the function vector
+
+        pha
+        asl     a
+        tax
+        lda     sigtable,x
+        sta     jmpvec+1
+        lda     sigtable+1,x
+        sta     jmpvec+2
+
+; Restore the signal number and call the function
+
+        pla                     ; Low byte
+        ldx     #0              ; High byte
+        jsr     jmpvec          ; Call signal function
+
+; raise() returns zero on success and any other value on failure
+
+        lda     #0
+        tax
+invalidsig:
+        rts
+