path: root/doc/nasmdoc.src
diff options
authorH. Peter Anvin <hpa@zytor.com>2019-06-06 18:33:42 -0700
committerH. Peter Anvin <hpa@zytor.com>2019-06-06 18:33:42 -0700
commite678020878c79830bf59db3ad0bddebab4537409 (patch)
treecfa40384759384ee3d39e7639f32f3189dfc9f30 /doc/nasmdoc.src
parentdb6960c3fa0483514eb2e6042ddd4bddf6536b0a (diff)
outelf: get rid of long-since-obsolete gnu extensions warning
R_386_[PC]{8,16} have been part of the official ELF32 spec for a very long time now. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'doc/nasmdoc.src')
1 files changed, 9 insertions, 10 deletions
diff --git a/doc/nasmdoc.src b/doc/nasmdoc.src
index 015dbcc2..cb6fdc6a 100644
--- a/doc/nasmdoc.src
+++ b/doc/nasmdoc.src
@@ -810,9 +810,9 @@ Some conditions are even less severe than that: they are only
sometimes worth mentioning to the user. Therefore NASM supports the
\c{-w} command-line option, which enables or disables certain
classes of assembly warning. Such warning classes are described by a
-name, for example \c{orphan-labels}; you can enable warnings of
-this class by the command-line option \c{-w+orphan-labels} and
-disable it by \c{-w-orphan-labels}.
+name, for example \c{label-orphan}; you can enable warnings of
+this class by the command-line option \c{-w+label-orphan} and
+disable it by \c{-w-label-orphan}.
The current \i{warning classes} are:
@@ -1127,7 +1127,7 @@ optional. (Note that this means that if you intend to code \c{lodsb}
alone on a line, and type \c{lodab} by accident, then that's still a
valid source line which does nothing but define a label. Running
NASM with the command-line option
-\I{orphan-labels}\c{-w+orphan-labels} will cause it to warn you if
+\I{label-orphan}\c{-w+orphan-labels} will cause it to warn you if
you define a label alone on a line without a \i{trailing colon}.)
\i{Valid characters} in labels are letters, numbers, \c{_}, \c{$},
@@ -6090,12 +6090,11 @@ requires that it be aligned on a 4-byte boundary.
\S{elf16} 16-bit code and ELF
\I{ELF, 16-bit code}
-The \c{ELF32} specification doesn't provide relocations for 8- and
-16-bit values, but the GNU \c{ld} linker adds these as an extension.
-NASM can generate GNU-compatible relocations, to allow 16-bit code to
-be linked as ELF using GNU \c{ld}. If NASM is used with the
-\c{-w+gnu-elf-extensions} option, a warning is issued when one of
-these relocations is generated.
+Older versions of the \c{ELF32} specification did not provide
+relocations for 8- and 16-bit values. It is now part of the formal
+specification, and any new enough linker should support them.
+ELF has currently no support for segmented programming.
\S{elfdbg} Debug formats and ELF
\I{ELF, debug formats}