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authorKen Raeburn <raeburn@cygnus>1994-07-14 21:35:54 +0000
committerKen Raeburn <raeburn@cygnus>1994-07-14 21:35:54 +0000
commit1fb83be62b5f5a9003124a42c276b9821f58dce1 (patch)
treebef9114abac1f77ee395fdc27fa6f03d0deffbf0 /bfd/pc532-mach.c
parent8e3ff8235415e2ae6bb56e21b020ac585616993a (diff)
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NS32K changes from Ian Dall.
Note: Some of the ns32k-specific files do require gcc to compile at present. This will be fixed.
Diffstat (limited to 'bfd/pc532-mach.c')
-rw-r--r--bfd/pc532-mach.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/bfd/pc532-mach.c b/bfd/pc532-mach.c
new file mode 100644
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--- /dev/null
+++ b/bfd/pc532-mach.c
@@ -0,0 +1,101 @@
+/* Written by Ian Dall
+ * 19-Apr-94
+ *
+ * Formerly part of aout-pc532-mach.c. Split out to allow more
+ * flexibility with multiple formats.
+ *
+ */
+/* This architecture has N_TXTOFF and N_TXTADDR defined as if
+ * N_HEADER_IN_TEXT, but the a_text entry (text size) does not include the
+ * space for the header. So we have N_HEADER_IN_TEXT defined to
+ * 1 and specially define our own N_TXTSIZE
+ */
+
+#define N_HEADER_IN_TEXT(x) 1
+#define N_TXTSIZE(x) ((x).a_text)
+
+
+#define TEXT_START_ADDR 0x10000 /* from old ld */
+#define PAGE_SIZE 0x1000 /* from old ld, 032 & 532 are really 512/4k */
+
+/* Use a_entry of 0 to distinguish object files from OMAGIC executables */
+#define N_TXTADDR(x) \
+ (N_MAGIC(x) == OMAGIC ? \
+ ((x).a_entry < TEXT_START_ADDR? 0: TEXT_START_ADDR): \
+ (N_MAGIC(x) == NMAGIC? TEXT_START_ADDR: \
+ TEXT_START_ADDR + EXEC_BYTES_SIZE))
+
+#define ARCH 32
+
+#define SEGMENT_SIZE PAGE_SIZE
+
+#define N_SHARED_LIB(x) 0
+#define SEGMENT_SIZE PAGE_SIZE
+#define DEFAULT_ARCH bfd_arch_ns32k
+
+#define MY(OP) CAT(pc532mach_,OP)
+
+#define TARGETNAME "a.out-pc532-mach"
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "aout-ns32k.h"
+#include "libaout.h"
+#include "libbfd.h"
+#include "aout/aout64.h"
+
+/* We can`t use the MYNS macro here for cpp reasons too subtle
+ * for me -- IWD
+ */
+#define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup
+
+/* libaout doesn't use NAME for these ... */
+#define MY_get_section_contents aout_32_get_section_contents
+
+/* Forward declaration. Defined in aout-target.h */
+static boolean MY(set_sizes)();
+
+static CONST struct aout_backend_data MY(backend_data) = {
+ 0, /* zmagic contiguous */
+ 1, /* text incl header */
+ 0,
+ 0, /* text vma? */
+ MY(set_sizes),
+ 1, /* exec header is not counted */
+};
+
+#define MY_backend_data &MY(backend_data)
+
+static boolean
+MY(write_object_contents) (abfd)
+ bfd *abfd;
+{
+ struct external_exec exec_bytes;
+ struct internal_exec *execp = exec_hdr (abfd);
+
+#if CHOOSE_RELOC_SIZE
+ CHOOSE_RELOC_SIZE(abfd);
+#else
+ obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
+#endif
+
+ BFD_ASSERT(bfd_get_arch(abfd) == bfd_arch_ns32k);
+ switch (bfd_get_mach(abfd)) {
+ case 32032:
+ N_SET_MACHTYPE (*execp, M_NS32032);
+ break;
+ case 32532:
+ default:
+ N_SET_MACHTYPE (*execp, M_NS32532);
+ break;
+ }
+ N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
+
+ WRITE_HEADERS(abfd, execp);
+
+ return true;
+}
+
+#define MY_write_object_contents MY(write_object_contents)
+
+#include "aout-target.h"