diff options
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 16 | ||||
| -rw-r--r-- | gas/config/obj-elf.c | 49 | ||||
| -rw-r--r-- | gas/config/obj-elf.h | 1 | ||||
| -rw-r--r-- | gas/doc/as.texi | 13 |
4 files changed, 65 insertions, 14 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index b5c358d..aa3f613 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,19 @@ +2021-05-07 Nick Clifton <nickc@redhat.com> + + PR 3136 + * config/obj-elf.c (elf_pseudo_table): Add entry for .bss. + (obj_elf_bss): New function. Change to the .bss section. + Support an optional subsection number. + (obj_elf_change_section): Call obj_elf_section_change_hook. + (obj_elf_section): Likewise. + (obj_elf_data): Likewise. + (obj_elf_text): Likewise. + (obj_elf_struct): Likewise. + (obj_elf_subsection): Likewise. + (obj_elf_previous): Likewise. + * config/obj-elf.h (obj_elf_bss): Prototype. + * doc/as.texi (Bss): New node. + 2021-05-07 Clément Chigot <clement.chigot@atos.net> * config/obj-coff.c (coff_frob_symbol): Don't skip C_DWARF. diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c index 9f85c57..e93d59c 100644 --- a/gas/config/obj-elf.c +++ b/gas/config/obj-elf.c @@ -131,6 +131,7 @@ static const pseudo_typeS elf_pseudo_table[] = {"offset", obj_elf_struct, 0}, {"struct", obj_elf_struct, 0}, {"text", obj_elf_text, 0}, + {"bss", obj_elf_bss, 0}, {"tls_common", obj_elf_tls_common, 0}, @@ -603,8 +604,8 @@ obj_elf_change_section (const char *name, elt->prev_subseg = previous_subsection; section_stack = elt; } - previous_section = now_seg; - previous_subsection = now_subseg; + + obj_elf_section_change_hook (); old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section_by_match, (void *) match_p); @@ -1125,8 +1126,7 @@ obj_elf_section (int push) md_flush_pending_output (); #endif - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); s_mri_sect (&mri_type); @@ -1467,6 +1467,28 @@ obj_elf_section (int push) subseg_set (now_seg, new_subsection); } +/* Change to the .bss section. */ + +void +obj_elf_bss (int i ATTRIBUTE_UNUSED) +{ + int temp; + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + obj_elf_section_change_hook (); + + temp = get_absolute_expression (); + subseg_set (bss_section, (subsegT) temp); + demand_empty_rest_of_line (); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + /* Change to the .data section. */ void @@ -1476,8 +1498,8 @@ obj_elf_data (int i) md_flush_pending_output (); #endif - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); + s_data (i); #ifdef md_elf_section_change_hook @@ -1494,8 +1516,8 @@ obj_elf_text (int i) md_flush_pending_output (); #endif - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); + s_text (i); #ifdef md_elf_section_change_hook @@ -1512,8 +1534,8 @@ obj_elf_struct (int i) md_flush_pending_output (); #endif - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); + s_struct (i); #ifdef md_elf_section_change_hook @@ -1530,8 +1552,7 @@ obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) md_flush_pending_output (); #endif - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); temp = get_absolute_expression (); subseg_set (now_seg, (subsegT) temp); @@ -1570,8 +1591,8 @@ obj_elf_previous (int ignore ATTRIBUTE_UNUSED) new_section = previous_section; new_subsection = previous_subsection; - previous_section = now_seg; - previous_subsection = now_subseg; + obj_elf_section_change_hook (); + subseg_set (new_section, new_subsection); #ifdef md_elf_section_change_hook diff --git a/gas/config/obj-elf.h b/gas/config/obj-elf.h index c096cfc..d1fd315 100644 --- a/gas/config/obj-elf.h +++ b/gas/config/obj-elf.h @@ -189,6 +189,7 @@ extern const char * obj_elf_section_name (void); extern void obj_elf_previous (int); extern void obj_elf_version (int); extern void obj_elf_common (int); +extern void obj_elf_bss (int); extern void obj_elf_data (int); extern void obj_elf_text (int); extern void obj_elf_change_section diff --git a/gas/doc/as.texi b/gas/doc/as.texi index e0559cf..292c4af2 100644 --- a/gas/doc/as.texi +++ b/gas/doc/as.texi @@ -4365,6 +4365,7 @@ Some machine configurations provide additional directives. * Asciz:: @code{.asciz "@var{string}"}@dots{} * Attach_to_group:: @code{.attach_to_group @var{name}} * Balign:: @code{.balign [@var{abs-expr}[, @var{abs-expr}]]} +* Bss:: @code{.bss @var{subsection}} * Bundle directives:: @code{.bundle_align_mode @var{abs-expr}}, etc * Byte:: @code{.byte @var{expressions}} * CFI directives:: @code{.cfi_startproc [simple]}, @code{.cfi_endproc}, etc. @@ -4709,6 +4710,18 @@ filled in with the value 0x368d (the exact placement of the bytes depends upon the endianness of the processor). If it skips 1 or 3 bytes, the fill value is undefined. +@node Bss +@section @code{.bss @var{subsection}} +@cindex @code{bss} directive + +@code{.bss} tells @command{@value{AS}} to assemble the following statements +onto the end of the bss section. +@ifset ELF +For ELF based targets an optional @var{subsection} expression (which must +evaluate to a positive integer) can be provided. In this case the statements +are appended to the end of the indicated bss subsection. +@end ifset + @node Bundle directives @section Bundle directives @subsection @code{.bundle_align_mode @var{abs-expr}} |