FreeChainXenon/binutils-gdb
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

* mips.h (OMAGIC): Define.

Browse source
This commit is contained in:
Ian Lance Taylor 1993-06-09 22:09:38 +00:00
parent de17306e90
commit a434bccf17
2 changed files with 65 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
include/coff/ChangeLog
View file

@ -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.

65
include/coff/mips.h
View file

@ -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 */
/* 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
#define RELOC struct external_reloc
#define RELSZ 8
/* 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)