From 250be7f64dbaa878ef78aab6b70180e7c7fb2e77 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Fri, 16 Jan 2015 15:41:24 +0000
Subject: [PATCH] tools/syscall6502: corrections

This now generates some vaguely plausible looking code 8)
---
 Library/Makefile             |  2 +-
 Library/tools/syscall_6502.c | 65 ++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 1 deletion(-)
 create mode 100644 Library/tools/syscall_6502.c

diff --git a/Library/Makefile b/Library/Makefile
index 9ea55687..0158ee97 100644
--- a/Library/Makefile
+++ b/Library/Makefile
@@ -9,5 +9,5 @@ clean:
 
 tools/syscall: tools/syscall.c ../Kernel/include/syscall_name.h
 tools/syscall-z88dk: tools/syscall-z88dk.c ../Kernel/include/syscall_name.h
-
+tools/syscall_6502: tools/syscall_6502.c ../Kernel/include/syscall_name.h
 tools/binman: tools/binman.c
diff --git a/Library/tools/syscall_6502.c b/Library/tools/syscall_6502.c
new file mode 100644
index 00000000..422a7a28
--- /dev/null
+++ b/Library/tools/syscall_6502.c
@@ -0,0 +1,65 @@
+/*
+ *	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)
+{
+  FILE *fp;
+  snprintf(namebuf, 128, "fuzix6502/syscall_%s.s", syscall_name[n]);
+  fp = fopen(namebuf, "w");
+  if (fp == NULL) {
+    perror(namebuf);
+    exit(1);
+  }
+  fprintf(fp, "\t.export _%s\n\n", syscall_name[n]);
+  fprintf(fp, ".proc _%s\n\tldx #%d\n", syscall_name[n], n);
+  fprintf(fp, "\tldy #%d\n", 2 * syscall_args[n]);
+  fprintf(fp, "\tjmp ($fe)\n\n.endproc\n");
+  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("fuzix6502/Makefile", "w");
+  if (fp == NULL) {
+    perror("Makefile");
+    exit(1);
+  }
+  fprintf(fp, "# Autogenerated by tools/syscall_6502\n");
+  fprintf(fp, "AS = ca65\n");
+  fprintf(fp, "AR = ar65\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) $(ASYS)\n");
+  fprintf(fp, "\nAOBJS = $(ASRCALL:.s=.o)\n\n");
+  fprintf(fp, "../syslib.lib: $(AOBJS)\n");
+  fprintf(fp, "\t$(AR) a ../syslib.lib $(AOBJS)\n\n");
+  fprintf(fp, "$(AOBJS): %%.o: %%.s\n");
+  fprintf(fp, "\t$(AS) -o $*.o $<\n\n");
+  fprintf(fp, "clean:\n");
+  fprintf(fp, "\trm -f $(AOBJS) $(ASRCS) *~\n\n");
+  fclose(fp);
+}
+
+int main(int argc, char *argv[])
+{
+  write_makefile();
+  write_call_table();
+  exit(0);
+}
-- 
2.34.1