Add support for the Z80 processor family

1 files changed, 85 insertions, 0 deletions

diff --git a/ld/emultempl/z80.em b/ld/emultempl/z80.em
new file mode 100644
index 0000000..d36c943
--- /dev/null
+++ b/ld/emultempl/z80.em
@@ -0,0 +1,85 @@
+# This shell script emits C code -*- C -*-
+# to keep track of the machine type of Z80 object files
+# It does some substitutions.
+
+LDEMUL_BEFORE_PARSE=gldz80_before_parse
+LDEMUL_RECOGNIZED_FILE=gldz80_recognized_file
+LDEMUL_AFTER_OPEN=gldz80_after_open
+
+cat >>e${EMULATION_NAME}.c <<EOF
+/* --- \begin{z80.em} */
+/* Codes for machine types, bitwise or gives the code to use for the
+   output.  */
+#define M_Z80STRICT 1
+#define M_Z80 3
+#define M_Z80FULL 7
+#define M_R800 11
+#define M_Z80ANY 15
+
+/* Bitwise or of the machine types seen so far.  */
+static int result_mach_type;
+
+static void 
+${LDEMUL_BEFORE_PARSE} (void)
+{
+#ifndef TARGET_			/* I.e., if not generic.  */
+  ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
+#endif /* not TARGET_ */
+  result_mach_type = M_Z80STRICT;
+}
+
+
+/* Update result_mach_type.  */
+static bfd_boolean
+${LDEMUL_RECOGNIZED_FILE} (lang_input_statement_type *entry)
+{
+  unsigned long mach_type;
+
+  mach_type = bfd_get_mach (entry->the_bfd);
+  switch (mach_type) 
+    {
+    case bfd_mach_z80strict:      
+      result_mach_type |= M_Z80STRICT; 
+      break;
+    case bfd_mach_z80:
+      result_mach_type |= M_Z80; 
+      break;
+    case bfd_mach_z80full:
+      result_mach_type |= M_Z80FULL; 
+      break;
+    case bfd_mach_r800:
+      result_mach_type |= M_R800; 
+      break;
+    default:
+      result_mach_type |= M_Z80ANY;
+    }
+  return FALSE;
+}
+
+/* Set the machine type of the output file based on result_mach_type.  */
+static void
+gldz80_after_open (void)
+{
+  unsigned long mach_type;
+
+  switch (result_mach_type)
+    {
+    case M_Z80STRICT:
+      mach_type = bfd_mach_z80strict;
+      break;
+    case M_Z80:
+      mach_type = bfd_mach_z80;
+      break;
+    case M_Z80FULL:
+      mach_type = bfd_mach_z80full;
+      break;
+    case M_R800:
+      mach_type = bfd_mach_r800;
+      break;
+    default:
+      mach_type = 0;
+    }
+  bfd_set_arch_mach (output_bfd, bfd_arch_z80, mach_type);
+}
+/* --- \end{z80.em} */
+EOF