* bfd-in.h (bfd_get_cacheable, bfd_set_cacheable): New accessors.
* bfd.c, opncls.c: Improve comments on file descriptor cacheing.
This commit is contained in:
John Gilmore
parent
4ec8fed342
commit
baf205c4f2
3 changed files with 110 additions and 29 deletions
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@ -1,3 +1,8 @@
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Thu Nov 4 14:46:14 1993 John Gilmore (gnu@rtl.cygnus.com)
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* bfd-in.h (bfd_get_cacheable, bfd_set_cacheable): New accessors.
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* bfd.c, opncls.c: Improve comments on file descriptor cacheing.
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Thu Nov 4 08:54:30 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
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* From Pete Hoogenboom (hoogen@cs.utah.edu)
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96
bfd/bfd.c
96
bfd/bfd.c
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@ -48,7 +48,8 @@ CODE_FRAGMENT
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. is the result of an fopen on the filename. *}
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. char *iostream;
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.
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. {* Is the file being cached *}
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. {* Is the file descriptor being cached? That is, can it be closed as
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. needed, and re-opened when accessed later? *}
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.
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. boolean cacheable;
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.
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@ -156,9 +157,11 @@ CODE_FRAGMENT
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. struct bout_data_struct *bout_data;
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. struct sun_core_struct *sun_core_data;
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. struct trad_core_struct *trad_core_data;
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. struct hppa_data_struct *hppa_data;
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. struct som_data_struct *som_data;
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. struct hpux_core_struct *hpux_core_data;
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. struct sgi_core_struct *sgi_core_data;
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. struct lynx_core_struct *lynx_core_data;
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. struct osf_core_struct *osf_core_data;
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. PTR any;
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. } tdata;
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.
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@ -181,17 +184,12 @@ CODE_FRAGMENT
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#include "coff/sym.h"
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#include "libcoff.h"
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#include "libecoff.h"
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#undef obj_symbols
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#include "libelf.h"
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#undef strerror
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extern char *strerror();
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CONST short _bfd_host_big_endian = 0x0100;
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/* Accessing the above as (*(char*)&_bfd_host_big_endian), will
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return 1 if the host is big-endian, 0 otherwise.
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(assuming that a short is two bytes long!!! FIXME)
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(See HOST_IS_BIG_ENDIAN_P in bfd.h.) */
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/** Error handling
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o - Most functions return nonzero on success (check doc for
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precise semantics); 0 or NULL on error.
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@ -605,8 +603,8 @@ SYNOPSIS
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DESCRIPTION
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Set the maximum size of objects to be optimized using the GP
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register under MIPS ECOFF. This is typically set by the -G
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argument to the compiler, assembler or linker.
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register under ECOFF or MIPS ELF. This is typically set by
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the -G argument to the compiler, assembler or linker.
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*/
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void
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@ -616,6 +614,82 @@ bfd_set_gp_size (abfd, i)
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{
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if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
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ecoff_data (abfd)->gp_size = i;
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else if (abfd->xvec->flavour == bfd_target_elf_flavour)
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elf_gp_size (abfd) = i;
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}
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/*
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FUNCTION
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bfd_scan_vma
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DESCRIPTION
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Converts, like strtoul, a numerical expression as a
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string into a bfd_vma integer, and returns that integer.
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(Though without as many bells and whistles as strtoul.)
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The expression is assumed to be unsigned (i.e. positive).
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If given a base, it is used as the base for conversion.
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A base of 0 causes the function to interpret the string
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in hex if a leading "0x" or "0X" is found, otherwise
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in octal if a leading zero is found, otherwise in decimal.
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Overflow is not detected.
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SYNOPSIS
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bfd_vma bfd_scan_vma(CONST char *string, CONST char **end, int base);
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*/
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bfd_vma
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DEFUN(bfd_scan_vma,(string, end, base),
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CONST char *string AND
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CONST char **end AND
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int base)
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{
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bfd_vma value;
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int digit;
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/* Let the host do it if possible. */
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if (sizeof(bfd_vma) <= sizeof(unsigned long))
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return (bfd_vma) strtoul (string, 0, base);
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/* A negative base makes no sense, and we only need to go as high as hex. */
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if ((base < 0) || (base > 16))
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return (bfd_vma) 0;
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if (base == 0)
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{
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if (string[0] == '0')
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{
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if ((string[1] == 'x') || (string[1] == 'X'))
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base = 16;
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/* XXX should we also allow "0b" or "0B" to set base to 2? */
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else
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base = 8;
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}
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else
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base = 10;
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}
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if ((base == 16) &&
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(string[0] == '0') && ((string[1] == 'x') || (string[1] == 'X')))
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string += 2;
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/* XXX should we also skip over "0b" or "0B" if base is 2? */
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/* Speed could be improved with a table like hex_value[] in gas. */
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#define HEX_VALUE(c) \
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(isxdigit(c) ? \
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(isdigit(c) ? \
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(c - '0') : \
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(10 + c - (islower(c) ? 'a' : 'A'))) : \
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42)
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for (value = 0; (digit = HEX_VALUE(*string)) < base; string++)
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{
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value = value * base + digit;
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}
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if (end)
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*end = string;
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return value;
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}
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/*
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38
bfd/opncls.c
38
bfd/opncls.c
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@ -34,7 +34,8 @@ FILE *bfd_open_file PARAMS ((bfd *));
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/* Return a new BFD. All BFD's are allocated through this routine. */
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bfd *new_bfd PARAMS ((void))
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bfd *
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new_bfd PARAMS ((void))
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{
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bfd *nbfd;
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@ -58,26 +59,27 @@ bfd *new_bfd PARAMS ((void))
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nbfd->output_has_begun = false;
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nbfd->section_count = 0;
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nbfd->usrdata = (PTR)NULL;
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nbfd->sections = (asection *)NULL;
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nbfd->cacheable = false;
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nbfd->flags = NO_FLAGS;
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nbfd->mtime_set = false;
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return nbfd;
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}
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/* Allocate a new BFD as a member of archive OBFD. */
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bfd *new_bfd_contained_in(obfd)
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bfd *obfd;
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bfd *
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new_bfd_contained_in (obfd)
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bfd *obfd;
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{
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bfd *nbfd = new_bfd();
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nbfd->xvec = obfd->xvec;
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nbfd->my_archive = obfd;
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nbfd->direction = read_direction;
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nbfd->target_defaulted = obfd->target_defaulted;
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return nbfd;
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bfd *nbfd;
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nbfd = new_bfd();
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nbfd->xvec = obfd->xvec;
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nbfd->my_archive = obfd;
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nbfd->direction = read_direction;
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nbfd->target_defaulted = obfd->target_defaulted;
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return nbfd;
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}
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/*
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@ -158,8 +160,8 @@ DESCRIPTION
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If the caller desires that this file descriptor be cached by BFD
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(opened as needed, closed as needed to free descriptors for
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other opens), with the supplied @var{fd} used as an initial
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file descriptor (but subject to closure at any time), set
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bfd->cacheable nonzero in the returned BFD. The default is to
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file descriptor (but subject to closure at any time), call
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bfd_set_cacheable(bfd, 1) on the returned BFD. The default is to
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assume no cacheing; the file descriptor will remain open until
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bfd_close, and will not be affected by BFD operations on other
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files.
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@ -440,7 +442,7 @@ FUNCTION
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bfd_create
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SYNOPSIS
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bfd *bfd_create(CONST char *filename, bfd *template);
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bfd *bfd_create(CONST char *filename, bfd *templ);
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DESCRIPTION
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This routine creates a new BFD in the manner of
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@ -451,9 +453,9 @@ DESCRIPTION
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*/
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bfd *
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DEFUN(bfd_create,(filename, template),
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DEFUN(bfd_create,(filename, templ),
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CONST char *filename AND
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bfd *template)
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bfd *templ)
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{
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bfd *nbfd = new_bfd();
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if (nbfd == (bfd *)NULL) {
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@ -461,8 +463,8 @@ DEFUN(bfd_create,(filename, template),
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return (bfd *)NULL;
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}
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nbfd->filename = filename;
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if(template) {
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nbfd->xvec = template->xvec;
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if(templ) {
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nbfd->xvec = templ->xvec;
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}
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nbfd->direction = no_direction;
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bfd_set_format(nbfd, bfd_object);
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