* mips.h (OMAGIC): Define.

2 files changed, 66 insertions, 13 deletions

diff --git a/include/coff/ChangeLog b/include/coff/ChangeLog
index 71cfcc3..f2d84b6 100644
--- a/include/coff/ChangeLog
+++ b/include/coff/ChangeLog
@@ -1,3 +1,15 @@
+Wed Jun  9 15:09:09 1993  Ian Lance Taylor  (ian@cygnus.com)
+
+	* mips.h (OMAGIC): Define.
+
+Mon Apr 26 18:04:47 1993  Steve Chamberlain  (sac@thepub.cygnus.com)
+
+	* internal.h, sh.h: Support for SH.
+
+Sat Apr 24 21:34:59 1993  Jim Kingdon  (kingdon@cygnus.com)
+
+	* a29k.h: Define _LIT.
+
 Fri Apr 23 18:41:23 1993  Steve Chamberlain  (sac@thepub.cygnus.com)
 
 	* alpha.h: New file.
diff --git a/include/coff/mips.h b/include/coff/mips.h
index 5d15274..c0277d6 100644
--- a/include/coff/mips.h
+++ b/include/coff/mips.h
@@ -15,14 +15,16 @@ struct external_filehdr {
 };
 
 
-/* Mips magics */
+/* Mips magic numbers used in filehdr.  MIPS_MAGIC_LITTLE is used on
+   little endian machines.  MIPS_MAGIC_BIG is used on big endian
+   machines.  Where is MIPS_MAGIC_1 from?  */
 #define MIPS_MAGIC_1 0x0180
-#define MIPS_MAGIC_2 0x0162
-#define MIPS_MAGIC_3 0x0160
+#define MIPS_MAGIC_LITTLE 0x0162
+#define MIPS_MAGIC_BIG 0x0160
 
 #define ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
-			((x).f_magic!=MIPS_MAGIC_2) &&\
-			((x).f_magic!=MIPS_MAGIC_3))
+			((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
+			((x).f_magic!=MIPS_MAGIC_BIG))
 
 
 #define	FILHDR	struct external_filehdr
@@ -41,12 +43,17 @@ typedef struct external_aouthdr
   unsigned char	entry[4];	/* entry pt.				*/
   unsigned char text_start[4];	/* base of text used for this file */
   unsigned char data_start[4];	/* base of data used for this file */
+  unsigned char bss_start[4];	/* base of bss used for this file */
+  unsigned char gprmask[4];	/* ?? */
+  unsigned char cprmask[4][4];	/* ?? */
+  unsigned char gp_value[4];	/* value for gp register */
 } AOUTHDR;
 
 /* compute size of a header */
 
 #define AOUTSZ (sizeof(AOUTHDR))
 
+#define OMAGIC		0407	/* not demand paged (ld -N).  */
 #define ZMAGIC          0413    /* demand load format, eg normal ld output */
 
 /********************** SECTION HEADER **********************/
@@ -103,9 +110,11 @@ struct external_reloc {
   unsigned char r_bits[4];
 };
 
+#define RELOC struct external_reloc
+#define RELSZ 8
+
 /* MIPS ECOFF uses a packed 8 byte format for relocs.  These constants
-   are used to unpack the r_bits field.  FIXME: Check these on a big
-   endian machine.  */
+   are used to unpack the r_bits field.  */
 
 #define RELOC_BITS0_SYMNDX_SH_LEFT_BIG		16
 #define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE	0
@@ -116,8 +125,8 @@ struct external_reloc {
 #define RELOC_BITS2_SYMNDX_SH_LEFT_BIG		0
 #define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE	16
 
-#define RELOC_BITS3_TYPE_BIG			0x3C
-#define RELOC_BITS3_TYPE_SH_BIG			2
+#define RELOC_BITS3_TYPE_BIG			0x1E
+#define RELOC_BITS3_TYPE_SH_BIG			1
 #define RELOC_BITS3_TYPE_LITTLE			0x78
 #define RELOC_BITS3_TYPE_SH_LITTLE		3
 
@@ -128,10 +137,32 @@ struct external_reloc {
    internal_reloc.  FIXME: Do this more sensibly.  */
 #define r_extern r_offset
 
-/* Relevent values for r_type and ecoff.  Would someone please document them */
-
-#define RELOC struct external_reloc
-#define RELSZ 8
+/* If the extern bit is 1, then r_symndx is an index into the external
+   symbol table.  If the extern bit is 0, then r_symndx indicates a
+   section, and is one of the following values.  */
+#define RELOC_SECTION_TEXT	1
+#define RELOC_SECTION_RDATA	2
+#define RELOC_SECTION_DATA	3
+#define RELOC_SECTION_SDATA	4
+#define RELOC_SECTION_SBSS	5
+#define RELOC_SECTION_BSS	6
+#define RELOC_SECTION_INIT	7
+#define RELOC_SECTION_LIT8	8
+#define RELOC_SECTION_LIT4	9
+
+/* The r_type field is one of the following values.  I don't know if
+   any other values can appear.  These seem to be all that occur in
+   the Ultrix 4.2 libraries.  */
+#define ECOFF_R_IGNORE	0
+#define ECOFF_R_REFHALF	1
+#define ECOFF_R_REFWORD	2
+#define ECOFF_R_JMPADDR	3
+#define ECOFF_R_REFHI	4
+#define ECOFF_R_REFLO	5
+#define ECOFF_R_GPREL	6
+#define ECOFF_R_LITERAL	7
+
+/********************** STABS **********************/
 
 /* gcc uses mips-tfile to output type information in special stabs
    entries.  These must match the corresponding definition in
@@ -143,3 +174,13 @@ struct external_reloc {
 #define MIPS_MARK_STAB(code) ((code)+CODE_MASK)
 #define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK)
 #define STABS_SYMBOL "@stabs"
+
+/********************** COFF **********************/
+
+/* gcc also uses mips-tfile to output COFF debugging information.
+   These are the values it uses when outputting the .type directive.
+   These should also be in a shared include file.  */
+#define N_BTMASK	(017)
+#define N_TMASK		(060)
+#define N_BTSHFT	(4)
+#define N_TSHIFT	(2)