19990502 sourceware importbinu_ss_19990502

1 files changed, 369 insertions, 0 deletions

diff --git a/include/coff/mips.h b/include/coff/mips.h
new file mode 100644
index 0000000..d4665b1
--- /dev/null
+++ b/include/coff/mips.h
@@ -0,0 +1,369 @@
+/* ECOFF support on MIPS machines.
+   coff/ecoff.h must be included before this file.  */
+
+/********************** FILE HEADER **********************/
+
+struct external_filehdr {
+  unsigned char f_magic[2];	/* magic number			*/
+  unsigned char f_nscns[2];	/* number of sections		*/
+  unsigned char f_timdat[4];	/* time & date stamp		*/
+  unsigned char f_symptr[4];	/* file pointer to symtab	*/
+  unsigned char f_nsyms[4];	/* number of symtab entries	*/
+  unsigned char f_opthdr[2];	/* sizeof(optional hdr)		*/
+  unsigned char f_flags[2];	/* flags			*/
+};
+
+/* 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
+
+/********************** AOUT "OPTIONAL HEADER" **********************/
+
+
+typedef struct external_aouthdr
+{
+  unsigned char magic[2];	/* type of file				*/
+  unsigned char	vstamp[2];	/* version stamp			*/
+  unsigned char	tsize[4];	/* text size in bytes, padded to FW bdry*/
+  unsigned char	dsize[4];	/* initialized data "  "		*/
+  unsigned char	bsize[4];	/* uninitialized data "   "		*/
+  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 56
+#define AOUTHDRSZ 56
+
+/********************** SECTION HEADER **********************/
+
+struct external_scnhdr {
+  unsigned char	s_name[8];	/* section name			*/
+  unsigned char	s_paddr[4];	/* physical address, aliased s_nlib */
+  unsigned char	s_vaddr[4];	/* virtual address		*/
+  unsigned char	s_size[4];	/* section size			*/
+  unsigned char	s_scnptr[4];	/* file ptr to raw data for section */
+  unsigned char	s_relptr[4];	/* file ptr to relocation	*/
+  unsigned char	s_lnnoptr[4];	/* file ptr to line numbers	*/
+  unsigned char	s_nreloc[2];	/* number of relocation entries	*/
+  unsigned char	s_nlnno[2];	/* number of line number entries*/
+  unsigned char	s_flags[4];	/* flags			*/
+};
+
+#define	SCNHDR	struct external_scnhdr
+#define	SCNHSZ	40
+
+/********************** RELOCATION DIRECTIVES **********************/
+
+struct external_reloc {
+  unsigned char r_vaddr[4];
+  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.  */
+
+#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG		16
+#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE	0
+
+#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG		8
+#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE	8
+
+#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG		0
+#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE	16
+
+/* Originally, ECOFF used four bits for the reloc type and had three
+   reserved bits.  Irix 4 added another bit for the reloc type, which
+   was easy because it was big endian and one of the spare bits became
+   the new most significant bit.  To make this also work for little
+   endian ECOFF, we need to wrap one of the reserved bits around to
+   become the most significant bit of the reloc type.  */
+#define RELOC_BITS3_TYPE_BIG			0x3E
+#define RELOC_BITS3_TYPE_SH_BIG			1
+#define RELOC_BITS3_TYPE_LITTLE			0x78
+#define RELOC_BITS3_TYPE_SH_LITTLE		3
+#define RELOC_BITS3_TYPEHI_LITTLE		0x04
+#define RELOC_BITS3_TYPEHI_SH_LITTLE		2
+
+#define RELOC_BITS3_EXTERN_BIG			0x01
+#define RELOC_BITS3_EXTERN_LITTLE		0x80
+
+/* 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
+
+/* These reloc types are a Cygnus extension used when generating
+   position independent code for embedded systems.  The numbers are
+   taken from Irix 4, but at least for internal relocs Irix 5 does not
+   give them the same meaning.  For an internal reloc the symbol index
+   of RELHI and RELLO is modified as described below for
+   MIPS_R_SWITCH.  */
+#define MIPS_R_PCREL16	12
+#define MIPS_R_RELHI	13
+#define MIPS_R_RELLO	14
+
+/* 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:
+     .word $L3-$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	22
+
+/********************** STABS **********************/
+
+#define MIPS_IS_STAB ECOFF_IS_STAB
+#define MIPS_MARK_STAB ECOFF_MARK_STAB
+#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
+
+/********************** 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];
+};
+
+/* Runtime procedure table */
+
+struct rpdr_ext {
+	unsigned char	p_adr[4];
+	unsigned char	p_regmask[4];
+	unsigned char	p_regoffset[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_irpss[4];
+	unsigned char	p_reserved[4];
+	unsigned char	p_exception_info[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