From a434bccf172f3542ffe7da605292c3614c780bc9 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Wed, 9 Jun 1993 22:09:38 +0000 Subject: [PATCH] * mips.h (OMAGIC): Define. --- include/coff/ChangeLog | 12 ++++++++ include/coff/mips.h | 67 ++++++++++++++++++++++++++++++++++-------- 2 files changed, 66 insertions(+), 13 deletions(-) diff --git a/include/coff/ChangeLog b/include/coff/ChangeLog index 71cfcc34743..f2d84b6e057 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 5d15274e6e5..c0277d68536 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) -- 2.30.2