--- /dev/null
+/*
+ * Generate the syscall functions
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "syscall_name.h"
+
+static char namebuf[128];
+
+static void write_call(int n)
+{
+ int args;
+ FILE *fp;
+ snprintf(namebuf, 128, "fuzixpdp11/syscall_%s.s", syscall_name[n]);
+ fp = fopen(namebuf, "w");
+ if (fp == NULL) {
+ perror(namebuf);
+ exit(1);
+ }
+ fprintf(fp, "\t.text\n\t.even\n\n"
+ "\t.globl _%1$s\n\n"
+ "_%1$s:\n", syscall_name[n]);
+ /* All current varargs max at 3 */
+ if (syscall_args[n] == VARARGS)
+ args = 3;
+ else
+ args = syscall_args[n];
+
+ /* FIXME: save r2/r3 if needed */
+ switch(n) {
+ case 2:
+ fprintf(fp, "\tmov 4(sp),r1\n");
+ case 1:
+ fprintf(fp, "\tmov 2(sp),r0\n");
+ case 0:
+ break;
+ case 3:
+ fprintf(fp, "\tmov r2,-(sp)\n\tmov 4(sp),r0\n"
+ "\tmov 6(sp),r1\n\tmov 8(sp),r2\n");
+ break;
+ case 4:
+ fprintf(fp, "\tmov r2,-(sp)\n\tmov r3,-(sp)\n"
+ "\tmov 6(sp),r0\n\tmov 8(sp),r1\n"
+ "\tmov 10(sp),r0\n\tmov 12(sp),r1\n");
+ break;
+ }
+ fprintf(fp, "\ttrap $%d\n", n);
+ fprintf(fp, "\ttst r1\n\tbeq noerr\n");
+ fprintf(fp, "\tmov r1,_errno\n");
+ fprintf(fp, "\tnoerr:\n");
+ switch(n) {
+ case 3:
+ fprintf(fp, "\tmov (sp)+, r3\n");
+ case 2:
+ fprintf(fp, "\tmov (sp)+, r2\n");
+ }
+ fprintf(fp, "\trts pc\n"); /* And restore R2/R3 if needed */
+ fclose(fp);
+}
+
+static void write_call_table(void)
+{
+ int i;
+ for (i = 0; i < NR_SYSCALL; i++)
+ write_call(i);
+}
+
+static void write_makefile(void)
+{
+ int i;
+ FILE *fp = fopen("fuzixpdp11/Makefile", "w");
+ if (fp == NULL) {
+ perror("Makefile");
+ exit(1);
+ }
+ fprintf(fp, "# Autogenerated by tools/syscall_pdp11\n");
+ fprintf(fp, "CROSS_AS=pdp11-aout-as\nCROSS_LD=pdp11-aout-ld\nCROSS_AR=pdp11-aout-ar\n");
+ fprintf(fp, "ASOPTS=\n\n");
+ fprintf(fp, "ASRCS = syscall_%s.s\n", syscall_name[0]);
+ for (i = 1; i < NR_SYSCALL; i++)
+ fprintf(fp, "ASRCS += syscall_%s.s\n", syscall_name[i]);
+ fprintf(fp, "\n\nASRCALL = $(ASRCS)\n");
+ fprintf(fp, "\nAOBJS = $(ASRCALL:.s=.o)\n\n");
+ fprintf(fp, "syslib.lib: $(AOBJS)\n");
+ fprintf(fp, "\techo $(AOBJS) >syslib.l\n");
+ fprintf(fp, "\t$(CROSS_AR) rc syslib.lib $(AOBJS)\n\n");
+ fprintf(fp, "$(AOBJS): %%.o: %%.s\n");
+ fprintf(fp, "\t$(CROSS_AS) $(ASOPTS) -o $*.o $<\n\n");
+ fprintf(fp, "clean:\n");
+ fprintf(fp, "\trm -f $(AOBJS) $(ASRCS) syslib.lib syslib.l *~\n\n");
+ fclose(fp);
+}
+
+int main(int argc, char *argv[])
+{
+ write_makefile();
+ write_call_table();
+ exit(0);
+}