Add support for new load commands added by Apple to the MACH-O file format.

bfd	* mach-o.h: Add new enums for BFD_MACH_O_PLATFORM_MACOS,
	BFD_MACH_O_PLATFORM_IOS, BFD_MACH_O_PLATFORM_TVOS,
	BFD_MACH_O_PLATFORM_WATCHOS, BFD_MACH_O_PLATFORM_BRIDGEOS,
	BFD_MACH_O_TOOL_CLANG, BFD_MACH_O_TOOL_SWIFT, BFD_MACH_O_TOOL_LD.
	(struct bfd_mach_o_note_command): New.
	(struct bfd_mach_o_build_version_tool): New.
	(struct bfd_mach_o_build_version_command): New.
	(bfd_mach_o_read_version_min): Don't split version into
	a few fields. Rename reserved to sdk.
	* mach-o.c (bfd_mach_o_read_version_min): Don't split version into a
	few fields. Rename reserved to sdk.
	(bfd_mach_o_read_command): Handle LC_VERSION_MIN_TVOS, LC_NOTE,
	LC_BUILD_VERSION.
	(bfd_mach_o_read_note): New.
	(bfd_mach_o_read_build_version): New.

	PR 23728
binutils* od-macho.c (printf_version): New.
	(dump_load_command): Use it to print version. Print sdk version. Print
	version info for watchOS and tvOS. Print LC_NOTE, LC_BUILD_VERSION.
	(dump_buld_version): New.
	(bfd_mach_o_platform_name): New
	(bfd_mach_o_tool_name): New

	* mach-o/external.h (mach_o_nversion_min_command_external): Rename
	reserved to sdk.
	(mach_o_note_command_external): New.
	(mach_o_build_version_command_external): New.
	* mach-o/loader.h (BFD_MACH_O_LC_VERSION_MIN_TVOS): Define.
	(BFD_MACH_O_LC_NOTE): Define.

1 files changed, 42 insertions, 6 deletions

diff --git a/bfd/mach-o.h b/bfd/mach-o.h
index d80d439..61428d6 100644
--- a/bfd/mach-o.h
+++ b/bfd/mach-o.h
@@ -113,6 +113,18 @@ bfd_mach_o_segment_command;
 #define BFD_MACH_O_PROT_WRITE   0x02
 #define BFD_MACH_O_PROT_EXECUTE 0x04
 
+/* Target platforms.  */
+#define BFD_MACH_O_PLATFORM_MACOS    1
+#define BFD_MACH_O_PLATFORM_IOS      2
+#define BFD_MACH_O_PLATFORM_TVOS     3
+#define BFD_MACH_O_PLATFORM_WATCHOS  4
+#define BFD_MACH_O_PLATFORM_BRIDGEOS 5
+
+/* Build tools.  */
+#define BFD_MACH_O_TOOL_CLANG 1
+#define BFD_MACH_O_TOOL_SWIFT 2
+#define BFD_MACH_O_TOOL_LD    3
+
 /* Expanded internal representation of a relocation entry.  */
 typedef struct bfd_mach_o_reloc_info
 {
@@ -519,10 +531,8 @@ bfd_mach_o_dyld_info_command;
 
 typedef struct bfd_mach_o_version_min_command
 {
-  unsigned char rel;
-  unsigned char maj;
-  unsigned char min;
-  unsigned int reserved;
+  uint32_t version;
+  uint32_t sdk;
 }
 bfd_mach_o_version_min_command;
 
@@ -551,6 +561,30 @@ typedef struct bfd_mach_o_source_version_command
 }
 bfd_mach_o_source_version_command;
 
+typedef struct bfd_mach_o_note_command
+{
+  char data_owner[16];
+  bfd_uint64_t offset;
+  bfd_uint64_t size;
+}
+bfd_mach_o_note_command;
+
+typedef struct bfd_mach_o_build_version_tool
+{
+  uint32_t tool;
+  uint32_t version;
+}
+bfd_mach_o_build_version_tool;
+
+typedef struct bfd_mach_o_build_version_command
+{
+  uint32_t platform;
+  uint32_t minos;
+  uint32_t sdk;
+  uint32_t ntools;
+}
+bfd_mach_o_build_version_command;
+
 typedef struct bfd_mach_o_load_command
 {
   /* Next command in the single linked list.  */
@@ -584,6 +618,8 @@ typedef struct bfd_mach_o_load_command
     bfd_mach_o_fvmlib_command fvmlib;
     bfd_mach_o_main_command main;
     bfd_mach_o_source_version_command source_version;
+    bfd_mach_o_note_command note;
+    bfd_mach_o_build_version_command build_version;
   } command;
 }
 bfd_mach_o_load_command;
@@ -617,10 +653,10 @@ typedef struct mach_o_data_struct
   /* A place to stash dwarf2 info for this bfd.  */
   void *dwarf2_find_line_info;
 
-  /* BFD of .dSYM file. */
+  /* BFD of .dSYM file.  */
   bfd *dsym_bfd;
 
-  /* Cache of dynamic relocs. */
+  /* Cache of dynamic relocs.  */
   arelent *dyn_reloc_cache;
 }
 bfd_mach_o_data_struct;