-/* Rudimentary ECOFF support on MIPS machines.
- This lacks symbol information, normally provided on MIPS Unix systems
- in the files <sym.h> and <symconst.h>. */
+/* ECOFF support on MIPS machines.
+ coff/ecoff.h must be included before this file. */
/********************** FILE HEADER **********************/
unsigned char f_flags[2]; /* flags */
};
-
-/* 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_LITTLE 0x0162
-#define MIPS_MAGIC_BIG 0x0160
-
-#define ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
- ((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
- ((x).f_magic!=MIPS_MAGIC_BIG))
-
+/* Magic numbers are defined in coff/ecoff.h. */
+#define MIPS_ECOFF_BADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
+ ((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
+ ((x).f_magic!=MIPS_MAGIC_BIG) && \
+ ((x).f_magic!=MIPS_MAGIC_LITTLE2) && \
+ ((x).f_magic!=MIPS_MAGIC_BIG2) && \
+ ((x).f_magic!=MIPS_MAGIC_LITTLE3) && \
+ ((x).f_magic!=MIPS_MAGIC_BIG3))
#define FILHDR struct external_filehdr
#define FILHSZ 20
#define AOUTSZ (sizeof(AOUTHDR))
-#define OMAGIC 0407 /* not demand paged (ld -N). */
-#define ZMAGIC 0413 /* demand load format, eg normal ld output */
-
/********************** SECTION HEADER **********************/
struct external_scnhdr {
#define SCNHDR struct external_scnhdr
#define SCNHSZ sizeof(SCNHDR)
-/*
- * names of "special" sections
- */
-#define _TEXT ".text"
-#define _DATA ".data"
-#define _BSS ".bss"
-#define _RDATA ".rdata"
-#define _SDATA ".sdata"
-#define _SBSS ".sbss"
-#define _LIT4 ".lit4"
-#define _LIT8 ".lit8"
-#define _LIB ".lib"
-
-#define DEFAULT_DATA_SECTION_ALIGNMENT 4
-#define DEFAULT_BSS_SECTION_ALIGNMENT 4
-#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
-/* For new sections we havn't heard of before */
-#define DEFAULT_SECTION_ALIGNMENT 4
-
-/* MIPS ECOFF uses some additional section types. */
-#define STYP_RDATA 0x100
-#define STYP_SDATA 0x200
-#define STYP_SBSS 0x400
-#define STYP_LIT8 0x8000000
-#define STYP_LIT4 0x10000000
-
-/* I don't know when this is used. */
-#define STYP_OTHER_LOAD 0x80000000
-
/********************** RELOCATION DIRECTIVES **********************/
struct external_reloc {
#define RELOC_BITS3_EXTERN_BIG 0x01
#define RELOC_BITS3_EXTERN_LITTLE 0x80
-/* We store the extern field in the r_offset field of a struct
- internal_reloc. FIXME: Do this more sensibly. */
-#define r_extern r_offset
-
-/* 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
+/* The r_type field in a reloc 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 MIPS_R_IGNORE 0
+#define MIPS_R_REFHALF 1
+#define MIPS_R_REFWORD 2
+#define MIPS_R_JMPADDR 3
+#define MIPS_R_REFHI 4
+#define MIPS_R_REFLO 5
+#define MIPS_R_GPREL 6
+#define MIPS_R_LITERAL 7
+
+/* This reloc type is a Cygnus extension used when generating position
+ independent code for embedded systems. */
+#define MIPS_R_PCREL16 8
+
+/* This reloc type is a Cygnus extension used when generating position
+ independent code for embedded systems. It is used for an entry in
+ a switch table, which looks like this:
+ .switch $L3-$LS12
+ The object file will contain the correct difference, and does not
+ require adjustment. However, when the linker is relaxing PC
+ relative calls, it is possible for $L3 to move farther away. This
+ reloc always appears in the .text section, and is always against
+ the .text section. However, the symbol index is not
+ RELOC_SECTION_TEXT. It is, instead, the distance between this
+ switch table entry and $LS12. Thus, the original value of $L12 is
+ vaddr - symndx
+ and the original value of $L3 is
+ vaddr - symndx + addend
+ where addend is the value in the object file. Knowing this, the
+ linker can know whether the addend in the object file must be
+ adjusted. */
+#define MIPS_R_SWITCH 9
/********************** STABS **********************/
-/* gcc uses mips-tfile to output type information in special stabs
- entries. These must match the corresponding definition in
- gcc/config/mips.h. At some point, these should probably go into a
- shared include file, but currently gcc and gdb do not share any
- directories. */
-#define CODE_MASK 0x8F300
-#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
-#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)
+#define MIPS_IS_STAB ECOFF_IS_STAB
+#define MIPS_MARK_STAB ECOFF_MARK_STAB
+#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
+
+#define DEFAULT_DATA_SECTION_ALIGNMENT 4
+#define DEFAULT_BSS_SECTION_ALIGNMENT 4
+#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
+/* For new sections we havn't heard of before */
+#define DEFAULT_SECTION_ALIGNMENT 4
+
+/********************** SYMBOLIC INFORMATION **********************/
+
+/* Written by John Gilmore. */
+
+/* ECOFF uses COFF-like section structures, but its own symbol format.
+ This file defines the symbol format in fields whose size and alignment
+ will not vary on different host systems. */
+
+/* File header as a set of bytes */
+
+struct hdr_ext {
+ unsigned char h_magic[2];
+ unsigned char h_vstamp[2];
+ unsigned char h_ilineMax[4];
+ unsigned char h_cbLine[4];
+ unsigned char h_cbLineOffset[4];
+ unsigned char h_idnMax[4];
+ unsigned char h_cbDnOffset[4];
+ unsigned char h_ipdMax[4];
+ unsigned char h_cbPdOffset[4];
+ unsigned char h_isymMax[4];
+ unsigned char h_cbSymOffset[4];
+ unsigned char h_ioptMax[4];
+ unsigned char h_cbOptOffset[4];
+ unsigned char h_iauxMax[4];
+ unsigned char h_cbAuxOffset[4];
+ unsigned char h_issMax[4];
+ unsigned char h_cbSsOffset[4];
+ unsigned char h_issExtMax[4];
+ unsigned char h_cbSsExtOffset[4];
+ unsigned char h_ifdMax[4];
+ unsigned char h_cbFdOffset[4];
+ unsigned char h_crfd[4];
+ unsigned char h_cbRfdOffset[4];
+ unsigned char h_iextMax[4];
+ unsigned char h_cbExtOffset[4];
+};
+
+/* File descriptor external record */
+
+struct fdr_ext {
+ unsigned char f_adr[4];
+ unsigned char f_rss[4];
+ unsigned char f_issBase[4];
+ unsigned char f_cbSs[4];
+ unsigned char f_isymBase[4];
+ unsigned char f_csym[4];
+ unsigned char f_ilineBase[4];
+ unsigned char f_cline[4];
+ unsigned char f_ioptBase[4];
+ unsigned char f_copt[4];
+ unsigned char f_ipdFirst[2];
+ unsigned char f_cpd[2];
+ unsigned char f_iauxBase[4];
+ unsigned char f_caux[4];
+ unsigned char f_rfdBase[4];
+ unsigned char f_crfd[4];
+ unsigned char f_bits1[1];
+ unsigned char f_bits2[3];
+ unsigned char f_cbLineOffset[4];
+ unsigned char f_cbLine[4];
+};
+
+#define FDR_BITS1_LANG_BIG 0xF8
+#define FDR_BITS1_LANG_SH_BIG 3
+#define FDR_BITS1_LANG_LITTLE 0x1F
+#define FDR_BITS1_LANG_SH_LITTLE 0
+
+#define FDR_BITS1_FMERGE_BIG 0x04
+#define FDR_BITS1_FMERGE_LITTLE 0x20
+
+#define FDR_BITS1_FREADIN_BIG 0x02
+#define FDR_BITS1_FREADIN_LITTLE 0x40
+
+#define FDR_BITS1_FBIGENDIAN_BIG 0x01
+#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
+
+#define FDR_BITS2_GLEVEL_BIG 0xC0
+#define FDR_BITS2_GLEVEL_SH_BIG 6
+#define FDR_BITS2_GLEVEL_LITTLE 0x03
+#define FDR_BITS2_GLEVEL_SH_LITTLE 0
+
+/* We ignore the `reserved' field in bits2. */
+
+/* Procedure descriptor external record */
+
+struct pdr_ext {
+ unsigned char p_adr[4];
+ unsigned char p_isym[4];
+ unsigned char p_iline[4];
+ unsigned char p_regmask[4];
+ unsigned char p_regoffset[4];
+ unsigned char p_iopt[4];
+ unsigned char p_fregmask[4];
+ unsigned char p_fregoffset[4];
+ unsigned char p_frameoffset[4];
+ unsigned char p_framereg[2];
+ unsigned char p_pcreg[2];
+ unsigned char p_lnLow[4];
+ unsigned char p_lnHigh[4];
+ unsigned char p_cbLineOffset[4];
+};
+
+/* Line numbers */
+
+struct line_ext {
+ unsigned char l_line[4];
+};
+
+/* Symbol external record */
+
+struct sym_ext {
+ unsigned char s_iss[4];
+ unsigned char s_value[4];
+ unsigned char s_bits1[1];
+ unsigned char s_bits2[1];
+ unsigned char s_bits3[1];
+ unsigned char s_bits4[1];
+};
+
+#define SYM_BITS1_ST_BIG 0xFC
+#define SYM_BITS1_ST_SH_BIG 2
+#define SYM_BITS1_ST_LITTLE 0x3F
+#define SYM_BITS1_ST_SH_LITTLE 0
+
+#define SYM_BITS1_SC_BIG 0x03
+#define SYM_BITS1_SC_SH_LEFT_BIG 3
+#define SYM_BITS1_SC_LITTLE 0xC0
+#define SYM_BITS1_SC_SH_LITTLE 6
+
+#define SYM_BITS2_SC_BIG 0xE0
+#define SYM_BITS2_SC_SH_BIG 5
+#define SYM_BITS2_SC_LITTLE 0x07
+#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
+
+#define SYM_BITS2_RESERVED_BIG 0x10
+#define SYM_BITS2_RESERVED_LITTLE 0x08
+
+#define SYM_BITS2_INDEX_BIG 0x0F
+#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
+#define SYM_BITS2_INDEX_LITTLE 0xF0
+#define SYM_BITS2_INDEX_SH_LITTLE 4
+
+#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
+#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
+
+#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
+#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
+
+/* External symbol external record */
+
+struct ext_ext {
+ unsigned char es_bits1[1];
+ unsigned char es_bits2[1];
+ unsigned char es_ifd[2];
+ struct sym_ext es_asym;
+};
+
+#define EXT_BITS1_JMPTBL_BIG 0x80
+#define EXT_BITS1_JMPTBL_LITTLE 0x01
+
+#define EXT_BITS1_COBOL_MAIN_BIG 0x40
+#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
+
+#define EXT_BITS1_WEAKEXT_BIG 0x20
+#define EXT_BITS1_WEAKEXT_LITTLE 0x04
+
+/* Dense numbers external record */
+
+struct dnr_ext {
+ unsigned char d_rfd[4];
+ unsigned char d_index[4];
+};
+
+/* Relative file descriptor */
+
+struct rfd_ext {
+ unsigned char rfd[4];
+};
+
+/* Optimizer symbol external record */
+
+struct opt_ext {
+ unsigned char o_bits1[1];
+ unsigned char o_bits2[1];
+ unsigned char o_bits3[1];
+ unsigned char o_bits4[1];
+ struct rndx_ext o_rndx;
+ unsigned char o_offset[4];
+};
+
+#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
+#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
+
+#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
+#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
+
+#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
+#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
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