BFD and include/coff support for tic54x target.
This commit is contained in:
Tim Wall
parent
25a99cabd3
commit
2cf1695b81
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@ -1,3 +1,9 @@
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2000-04-07 Timothy Wall <twall@cygnus.com>
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* internal.h: Fix some comments related to TI COFF (instead of tic80).
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* ti.h: New.
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* tic54x.h: New.
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Wed Apr 5 22:08:41 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
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* sh.h (R_SH_LOOP_START, R_SH_LOOP_END): Define.
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@ -53,7 +53,7 @@ struct internal_filehdr
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long f_nsyms; /* number of symtab entries */
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unsigned short f_opthdr; /* sizeof(optional hdr) */
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unsigned short f_flags; /* flags */
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unsigned short f_target_id; /* (TIc80 specific) */
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unsigned short f_target_id; /* (TI COFF specific) */
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};
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@ -222,7 +222,7 @@ struct internal_aouthdr
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#define C_WEAKEXT 127 /* weak symbol -- GNU extension */
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/* New storage classes for TIc80 */
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/* New storage classes for TI COFF */
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#define C_UEXT 19 /* Tentative external definition */
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#define C_STATLAB 20 /* Static load time label */
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#define C_EXTLAB 21 /* External load time label */
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@ -0,0 +1,431 @@
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/*** COFF information for generic Texas Instruments COFF flavour */
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/********************** FILE HEADER **********************/
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struct external_filehdr {
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char f_magic[2]; /* magic number */
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char f_nscns[2]; /* number of sections */
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char f_timdat[4]; /* time & date stamp */
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char f_symptr[4]; /* file pointer to symtab */
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char f_nsyms[4]; /* number of symtab entries */
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char f_opthdr[2]; /* sizeof(optional hdr) */
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char f_flags[2]; /* flags */
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char f_target_id[2]; /* magic no. (TI COFF-specific) */
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};
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/* COFF0 has magic number in f_magic, and omits f_target_id from the file
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header; for later versions, f_magic is 0xC1 for COFF1 and 0xC2 for COFF2
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and the target-specific magic number is found in f_target_id */
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#define TICOFF0MAGIC TI_TARGET_ID
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#define TICOFF1MAGIC 0x00C1
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#define TICOFF2MAGIC 0x00C2
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#define TICOFF_AOUT_MAGIC 0x0108 /* magic number in optional header */
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#define TICOFF 1 /* customize coffcode.h */
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/* The target_id field changes depending on the particular CPU target */
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/* for COFF0, the target id appeared in f_magic, where COFFX magic is now */
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#ifndef TI_TARGET_ID
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#error "TI_TARGET_ID needs to be defined for your CPU"
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#endif
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/* Which bfd_arch to use... */
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#ifndef TICOFF_TARGET_ARCH
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#error "TICOFF_TARGET_ARCH needs to be defined for your CPU"
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#endif
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/* Default to COFF2 for file output */
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#ifndef TICOFF_DEFAULT_MAGIC
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#define TICOFF_DEFAULT_MAGIC TICOFF2MAGIC
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#endif
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/* This value is made available in the rare case where a bfd is unavailable */
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#ifndef OCTETS_PER_BYTE_POWER
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#warn OCTETS_PER_BYTE_POWER not defined for this CPU, it will default to 0
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#else
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#define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
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#endif
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/* default alignment is on a byte (not octet!) boundary */
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#ifndef COFF_DEFAULT_SECTION_ALIGNMENT_POWER
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
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#endif
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/* TI COFF encodes the section alignment in the section header flags */
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#define COFF_ALIGN_IN_SECTION_HEADER 1
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#define COFF_ALIGN_IN_S_FLAGS 1
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/* requires a power-of-two argument */
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#define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8))
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/* result is a power of two */
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#define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF)
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#define COFF0_P(ABFD) (bfd_coff_filhsz(ABFD) == FILHSZ_V0)
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#define COFF2_P(ABFD) (bfd_coff_scnhsz(ABFD) != SCNHSZ_V01)
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#define COFF0_BADMAG(x) ((x).f_magic != TICOFF0MAGIC)
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#define COFF1_BADMAG(x) ((x).f_magic != TICOFF1MAGIC || (x).f_target_id != TI_TARGET_ID)
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#define COFF2_BADMAG(x) ((x).f_magic != TICOFF2MAGIC || (x).f_target_id != TI_TARGET_ID)
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/* we need to read/write an extra field in the coff file header */
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#ifndef COFF_ADJUST_FILEHDR_IN_POST
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#define COFF_ADJUST_FILEHDR_IN_POST(abfd,src,dst) \
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do { ((struct internal_filehdr *)(dst))->f_target_id = \
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bfd_h_get_16(abfd, (bfd_byte *)(((FILHDR *)(src))->f_target_id)); \
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((struct internal_filehdr *)(dst))->f_flags |= F_LDPAGE; \
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} while(0)
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#endif
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#ifndef COFF_ADJUST_FILEHDR_OUT_POST
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#define COFF_ADJUST_FILEHDR_OUT_POST(abfd,src,dst) \
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do { bfd_h_put_16(abfd, ((struct internal_filehdr *)(src))->f_target_id, \
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(bfd_byte *)(((FILHDR *)(dst))->f_target_id)); \
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} while(0)
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#endif
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#define FILHDR struct external_filehdr
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#define FILHSZ 22
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#define FILHSZ_V0 20 /* COFF0 omits target_id field */
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/* File header flags */
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#define F_RELFLG (0x0001)
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#define F_EXEC (0x0002)
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#define F_LNNO (0x0004)
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/* F_LSYMS needs to be redefined in your source file */
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#define F_LSYMS_TICOFF (0x0010) /* normal COFF is 0x8 */
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#define F_10 0x00 /* file built for TMS320C1x devices */
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#define F_20 0x10 /* file built for TMS320C2x devices */
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#define F_25 0x20 /* file built for TMS320C2x/C5x devices */
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#define F_LENDIAN 0x0100 /* 16 bits/word, LSB first */
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#define F_SYMMERGE 0x1000 /* duplicate symbols were removed */
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/********************** OPTIONAL HEADER **********************/
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typedef struct
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{
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char magic[2]; /* type of file (0x108) */
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char vstamp[2]; /* version stamp */
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char tsize[4]; /* text size in bytes, padded to FW bdry*/
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char dsize[4]; /* initialized data " " */
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char bsize[4]; /* uninitialized data " " */
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char entry[4]; /* entry pt. */
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char text_start[4]; /* base of text used for this file */
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char data_start[4]; /* base of data used for this file */
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}
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AOUTHDR;
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#define AOUTHDRSZ 28
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#define AOUTSZ 28
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/********************** SECTION HEADER **********************/
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/* COFF0, COFF1 */
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struct external_scnhdr_v01 {
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char s_name[8]; /* section name */
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char s_paddr[4]; /* physical address, aliased s_nlib */
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char s_vaddr[4]; /* virtual address */
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char s_size[4]; /* section size (in WORDS) */
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char s_scnptr[4]; /* file ptr to raw data for section */
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char s_relptr[4]; /* file ptr to relocation */
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char s_lnnoptr[4]; /* file ptr to line numbers */
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char s_nreloc[2]; /* number of relocation entries */
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char s_nlnno[2]; /* number of line number entries*/
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char s_flags[2]; /* flags */
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char s_reserved[1]; /* reserved */
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char s_page[1]; /* section page number (LOAD) */
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};
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/* COFF2 */
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struct external_scnhdr {
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char s_name[8]; /* section name */
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char s_paddr[4]; /* physical address, aliased s_nlib */
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char s_vaddr[4]; /* virtual address */
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char s_size[4]; /* section size (in WORDS) */
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char s_scnptr[4]; /* file ptr to raw data for section */
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char s_relptr[4]; /* file ptr to relocation */
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char s_lnnoptr[4]; /* file ptr to line numbers */
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char s_nreloc[4]; /* number of relocation entries */
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char s_nlnno[4]; /* number of line number entries*/
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char s_flags[4]; /* flags */
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char s_reserved[2]; /* reserved */
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char s_page[2]; /* section page number (LOAD) */
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};
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/*
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* Special section flags
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* TI COFF puts the section alignment power of two in the section flags
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* e.g. 2**N is alignment, flags |= (N & 0xF) << 8
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*/
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/* recognized load pages */
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#define PG_PROG 0x0 /* PROG page */
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#define PG_DATA 0x1 /* DATA page */
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/* TI COFF defines these flags;
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STYP_CLINK: the section should be excluded from the final
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linker output if there are no references found to any symbol in the section
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STYP_BLOCK: the section should be blocked, i.e. if the section would cross
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a page boundary, it is started at a page boundary instead.
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*/
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#define STYP_CLINK (0x4000)
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#define STYP_BLOCK (0x1000)
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#define STYP_ALIGN (0x0F00) /* TI COFF stores section alignment here */
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#define SCNHDR_V01 struct external_scnhdr_v01
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#define SCNHDR struct external_scnhdr
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#define SCNHSZ_V01 40 /* for v0 and v1 */
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#define SCNHSZ 48
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/* COFF2 changes the offsets and sizes of these fields
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Assume we're dealing with the COFF2 scnhdr structure, and adjust
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accordingly
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*/
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#define GET_SCNHDR_NRELOC(ABFD,PTR) \
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(COFF2_P(ABFD) ? bfd_h_get_32 (ABFD,PTR) : bfd_h_get_16 (ABFD, PTR))
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#define PUT_SCNHDR_NRELOC(ABFD,VAL,PTR) \
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(COFF2_P(ABFD) ? bfd_h_put_32 (ABFD,VAL,PTR) : bfd_h_put_16 (ABFD,VAL,PTR))
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#define GET_SCNHDR_NLNNO(ABFD,PTR) \
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(COFF2_P(ABFD) ? bfd_h_get_32 (ABFD,PTR) : bfd_h_get_16 (ABFD, (PTR)-2))
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#define PUT_SCNHDR_NLNNO(ABFD,VAL,PTR) \
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(COFF2_P(ABFD) ? bfd_h_put_32 (ABFD,VAL,PTR) : bfd_h_put_16 (ABFD,VAL,(PTR)-2))
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#define GET_SCNHDR_FLAGS(ABFD,PTR) \
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(COFF2_P(ABFD) ? bfd_h_get_32 (ABFD,PTR) : bfd_h_get_16 (ABFD, (PTR)-4))
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#define PUT_SCNHDR_FLAGS(ABFD,VAL,PTR) \
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(COFF2_P(ABFD) ? bfd_h_put_32 (ABFD,VAL,PTR) : bfd_h_put_16 (ABFD,VAL,(PTR)-4))
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#define GET_SCNHDR_PAGE(ABFD,PTR) \
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(COFF2_P(ABFD) ? bfd_h_get_16 (ABFD,PTR) : bfd_h_get_8 (ABFD, (PTR)-7))
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/* on output, make sure that the "reserved" field is zero */
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#define PUT_SCNHDR_PAGE(ABFD,VAL,PTR) \
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(COFF2_P(ABFD) ? bfd_h_put_16 (ABFD,VAL,PTR) : \
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bfd_h_put_8 (ABFD,VAL,(PTR)-7), bfd_h_put_8 (ABFD, 0, (PTR)-8))
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/* TI COFF stores section size as number of bytes (address units, not octets),
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so adjust to be number of octets, which is what BFD expects */
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#define GET_SCNHDR_SIZE(ABFD,SZP) \
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(bfd_h_get_32(ABFD,SZP)*bfd_octets_per_byte(ABFD))
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#define PUT_SCNHDR_SIZE(ABFD,SZ,SZP) \
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bfd_h_put_32(ABFD,(SZ)/bfd_octets_per_byte(ABFD),SZP)
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#define COFF_ADJUST_SCNHDR_IN_POST(ABFD,EXT,INT) \
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do { ((struct internal_scnhdr *)(INT))->s_page = \
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GET_SCNHDR_PAGE(ABFD,(bfd_byte *)((SCNHDR *)(EXT))->s_page); \
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} while(0)
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/* The line number and reloc overflow checking in coff_swap_scnhdr_out in
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coffswap.h doesn't use PUT_X for s_nlnno and s_nreloc.
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Due to different sized v0/v1/v2 section headers, we have to re-write these
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fields.
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*/
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#define COFF_ADJUST_SCNHDR_OUT_POST(ABFD,INT,EXT) \
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do { \
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PUT_SCNHDR_NLNNO(ABFD,((struct internal_scnhdr *)(INT))->s_nlnno,\
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(bfd_byte *)((SCNHDR *)(EXT))->s_nlnno); \
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PUT_SCNHDR_NRELOC(ABFD,((struct internal_scnhdr *)(INT))->s_nreloc,\
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(bfd_byte *)((SCNHDR *)(EXT))->s_nreloc); \
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PUT_SCNHDR_FLAGS(ABFD,((struct internal_scnhdr *)(INT))->s_flags, \
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(bfd_byte *)((SCNHDR *)(EXT))->s_flags); \
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PUT_SCNHDR_PAGE(ABFD,((struct internal_scnhdr *)(INT))->s_page, \
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(bfd_byte *)((SCNHDR *)(EXT))->s_page); \
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} while(0)
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/* page macros
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the first GDB port requires flags in its remote memory access commands to
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distinguish between data/prog space. hopefully we can make this go away
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eventually. stuff the page in the upper bits of a 32-bit address, since
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the c5x family only uses 16 or 23 bits.
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c2x, c5x and most c54x devices have 16-bit addresses, but the c548 has
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23-bit program addresses. make sure the page flags don't interfere
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*/
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#define LONG_ADDRESSES 1
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#define PG_SHIFT (LONG_ADDRESSES ? 30 : 16)
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#define ADDR_MASK ((1ul<<PG_SHIFT)-1)/* 16 or 24-bit addresses */
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#define PG_MASK (3ul<<PG_SHIFT)
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#define PG_TO_FLAG(p) ((p)<<PG_SHIFT)
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#define FLAG_TO_PG(f) (((f)&PG_MASK)>>PG_SHIFT)
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/*
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* names of "special" sections
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*/
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#define _TEXT ".text"
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#define _DATA ".data"
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#define _BSS ".bss"
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#define _CINIT ".cinit" /* initialized C data */
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#define _SCONST ".const" /* constants */
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#define _SWITCH ".switch" /* switch tables */
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#define _STACK ".stack" /* C stack */
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#define _SYSMEM ".sysmem" /* used for malloc et al. syscalls */
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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* Line numbers are grouped on a per function basis; first entry in a function
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* grouping will have l_lnno = 0 and in place of physical address will be the
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* symbol table index of the function name.
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*/
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struct external_lineno {
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union {
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char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
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char l_paddr[4]; /* (physical) address of line number */
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} l_addr;
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char l_lnno[2]; /* line number */
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};
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#define LINENO struct external_lineno
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#define LINESZ 6
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/********************** SYMBOLS **********************/
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/* NOTE: this is what a local label looks like in assembly source; what it
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looks like in COFF output is undefined */
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#define TICOFF_LOCAL_LABEL_P(NAME) \
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((NAME[0] == '$' && NAME[1] >= '0' && NAME[1] <= '9' && NAME[2] == '\0') \
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|| NAME[strlen(NAME)-1] == '?')
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#define E_SYMNMLEN 8 /* # characters in a symbol name */
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#define E_FILNMLEN 14 /* # characters in a file name */
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#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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union {
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char e_name[E_SYMNMLEN];
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struct {
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char e_zeroes[4];
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char e_offset[4];
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} e;
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} e;
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char e_value[4];
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char e_scnum[2];
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char e_type[2];
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char e_sclass[1];
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char e_numaux[1];
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};
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#define N_BTMASK (017)
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#define N_TMASK (060)
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#define N_BTSHFT (4)
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#define N_TSHIFT (2)
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union external_auxent {
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struct {
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char x_tagndx[4]; /* str, un, or enum tag indx */
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union {
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struct {
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char x_lnno[2]; /* declaration line number */
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char x_size[2]; /* str/union/array size */
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} x_lnsz;
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char x_fsize[4]; /* size of function */
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} x_misc;
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union {
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struct { /* if ISFCN, tag, or .bb */
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char x_lnnoptr[4]; /* ptr to fcn line # */
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char x_endndx[4]; /* entry ndx past block end */
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} x_fcn;
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struct { /* if ISARY, up to 4 dimen. */
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char x_dimen[E_DIMNUM][2];
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} x_ary;
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} x_fcnary;
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char x_tvndx[2]; /* tv index */
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} x_sym;
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union {
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char x_fname[E_FILNMLEN];
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struct {
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char x_zeroes[4];
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char x_offset[4];
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} x_n;
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} x_file;
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struct {
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char x_scnlen[4]; /* section length */
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char x_nreloc[2]; /* # relocation entries */
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char x_nlinno[2]; /* # line numbers */
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} x_scn;
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struct {
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char x_tvfill[4]; /* tv fill value */
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char x_tvlen[2]; /* length of .tv */
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char x_tvran[2][2]; /* tv range */
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} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
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};
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#define SYMENT struct external_syment
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#define SYMESZ 18
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#define AUXENT union external_auxent
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#define AUXESZ 18
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/* section lengths are in target bytes (not host bytes) */
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#define GET_SCN_SCNLEN(ABFD,EXT) \
|
||||
(bfd_h_get_32(ABFD,(bfd_byte *)(EXT)->x_scn.x_scnlen)*bfd_octets_per_byte(ABFD))
|
||||
#define PUT_SCN_SCNLEN(ABFD,INT,EXT) \
|
||||
bfd_h_put_32(ABFD,(INT)/bfd_octets_per_byte(ABFD),\
|
||||
(bfd_byte *)(EXT)->x_scn.x_scnlen)
|
||||
|
||||
/* lnsz size is in bits in COFF file, in bytes in BFD */
|
||||
#define GET_LNSZ_SIZE(abfd, ext) \
|
||||
(bfd_h_get_16(abfd, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_size) / \
|
||||
(class != C_FIELD ? 8 : 1))
|
||||
|
||||
#define PUT_LNSZ_SIZE(abfd, in, ext) \
|
||||
bfd_h_put_16(abfd, ((class != C_FIELD) ? (in)*8 : (in)), \
|
||||
(bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
|
||||
|
||||
/* TI COFF stores offsets for MOS and MOU in bits; BFD expects bytes */
|
||||
#define COFF_ADJUST_SYM_IN_POST(ABFD,EXT,INT) \
|
||||
do { struct internal_syment *dst = (struct internal_syment *)(INT); \
|
||||
if (dst->n_sclass == C_MOS || dst->n_sclass == C_MOU) dst->n_value /= 8; \
|
||||
} while (0)
|
||||
|
||||
#define COFF_ADJUST_SYM_OUT_POST(ABFD,INT,EXT) \
|
||||
do { struct internal_syment *src = (struct internal_syment *)(INT); \
|
||||
SYMENT *dst = (SYMENT *)(EXT); \
|
||||
if(src->n_sclass == C_MOU || src->n_sclass == C_MOS) \
|
||||
bfd_h_put_32(abfd,src->n_value * 8,(bfd_byte *)dst->e_value); \
|
||||
} while (0)
|
||||
|
||||
/* detect section-relative absolute symbols so they get flagged with a sym
|
||||
index of -1
|
||||
*/
|
||||
#define SECTION_RELATIVE_ABSOLUTE_SYMBOL_P(RELOC,SECT) \
|
||||
((*(RELOC)->sym_ptr_ptr)->section->output_section == (SECT) \
|
||||
&& (RELOC)->howto->name[0] == 'A')
|
||||
|
||||
/********************** RELOCATION DIRECTIVES **********************/
|
||||
|
||||
struct external_reloc_v0 {
|
||||
char r_vaddr[4];
|
||||
char r_symndx[2];
|
||||
char r_reserved[2];
|
||||
char r_type[2];
|
||||
};
|
||||
|
||||
struct external_reloc {
|
||||
char r_vaddr[4];
|
||||
char r_symndx[4];
|
||||
char r_reserved[2]; /* extended pmad byte for COFF2 */
|
||||
char r_type[2];
|
||||
};
|
||||
|
||||
#define RELOC struct external_reloc
|
||||
#define RELSZ_V0 10 /* FIXME -- coffcode.h needs fixing */
|
||||
#define RELSZ 12 /* for COFF1/2 */
|
||||
|
||||
/* various relocation types. */
|
||||
#define R_ABS 0x0000 /* no relocation */
|
||||
#define R_REL13 0x002A /* 13-bit direct reference (???) */
|
||||
#define R_PARTLS7 0x0028 /* 7 LSBs of an address */
|
||||
#define R_PARTMS9 0x0029 /* 9MSBs of an address */
|
||||
#define R_EXTWORD 0x002B /* 23-bit direct reference */
|
||||
#define R_EXTWORD16 0x002C /* 16-bit direct reference to 23-bit addr*/
|
||||
#define R_EXTWORDMS7 0x002D /* upper 7 bits of 23-bit address */
|
||||
/*EOF*/
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
/*** COFF information for Texas Instruments TMS320C54X */
|
||||
#define TIC54X_TARGET_ID 0x98
|
||||
#define TIC54XALGMAGIC 0x009B /* c54x algebraic assembler output */
|
||||
#define TIC5X_TARGET_ID 0x92
|
||||
#define TI_TARGET_ID TIC54X_TARGET_ID
|
||||
#define OCTETS_PER_BYTE_POWER 1 /* octets per byte, as a power of two */
|
||||
#define HOWTO_BANK 6 /* add to howto to get absolute/sect-relative version */
|
||||
#define TICOFF_TARGET_ARCH bfd_arch_tic54x
|
||||
#define TICOFF_DEFAULT_MAGIC TICOFF1MAGIC /* we use COFF1 for compatibility */
|
||||
#include "coff/ti.h"
|
||||
/*EOF*/
|
||||
Loading…
Reference in New Issue