Library: Generate 6809 syscall glue

Signed-off-by: Tormod Volden <debian.tormod@gmail.com>

diff --git a/Library/Makefile b/Library/Makefile
index 0158ee9..4e45b6c 100644 (file)
--- a/Library/Makefile
+++ b/Library/Makefile
@@ -10,4 +10,5 @@ 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/syscall_6809: tools/syscall_6809.c ../Kernel/include/syscall_name.h
 tools/binman: tools/binman.c

diff --git a/Library/libs/fuzix6809/syscall.s b/Library/libs/fuzix6809/syscall.s
new file mode 100644 (file)
index 0000000..8e586d9
--- /dev/null
+++ b/Library/libs/fuzix6809/syscall.s
@@ -0,0 +1,15 @@
+       .globl __syscall
+       .globl _errno
+
+       .area .text
+
+__syscall:
+       swi2
+       bne     error
+       rts
+error:
+       sta     _errno
+       ldx     #0
+       stx     _errno+1
+       leax    -1,x            ; Return $FFFF (-1)
+       rts

diff --git a/Library/tools/syscall_6809.c b/Library/tools/syscall_6809.c
new file mode 100644 (file)
index 0000000..64a0577
--- /dev/null
+++ b/Library/tools/syscall_6809.c
@@ -0,0 +1,68 @@
+/*
+ *     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, "fuzix6809/syscall_%s.s", syscall_name[n]);
+  fp = fopen(namebuf, "w");
+  if (fp == NULL) {
+    perror(namebuf);
+    exit(1);
+  }
+  fprintf(fp, "\t.area .text\n\n");
+  fprintf(fp, "\t.globl __syscall\n");
+  fprintf(fp, "\t.globl _%s\n\n", syscall_name[n]);
+  fprintf(fp, "_%s:\n\tldx #%d\n", syscall_name[n], n);
+  fprintf(fp, "\tjmp __syscall\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("fuzix6809/Makefile", "w");
+  if (fp == NULL) {
+    perror("Makefile");
+    exit(1);
+  }
+  fprintf(fp, "# Autogenerated by tools/syscall_6809\n");
+  fprintf(fp, "CROSS_AS=m6809-unknown-as\nCROSS_LD=m6809-unknown-ld\nCROSS_AR=m6809-unknown-ar\n");
+  fprintf(fp, "ASOPTS=\n\n");
+  fprintf(fp, "ASYS=syscall$(PLATFORM).s\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, "\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);
+}