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-rw-r--r--include/coff/ChangeLog12
-rw-r--r--include/coff/mips.h67
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)