Add linker relaxation to v850 toolchain

1 files changed, 22 insertions, 1 deletions

diff --git a/gas/doc/c-v850.texi b/gas/doc/c-v850.texi
index 4b36461ee5..f67ad5c743 100644
--- a/gas/doc/c-v850.texi
+++ b/gas/doc/c-v850.texi
@@ -62,6 +62,14 @@ routines used by the code produced by GCC for all versions of the v850
 architecture, together with support routines only used by the V850E
 architecture.
 
+@cindex @code{-mrelax} command line option, V850
+@item -mrelax
+Enables relaxation.  This allows the .longcall and .longjump pseudo
+ops to be used in the assembler source code.  These ops label sections
+of code which are either a long function call or a long branch.  The
+assembler will then flag these sections of code and the linker will
+attempt to relax them.
+
 @end table
 
 
@@ -354,10 +362,23 @@ example:
 will put the call the function whoes address is held in the call table
 at the location labeled 'table_func1'.
 
+@cindex @code{longcall} pseudo-op, V850
+@item .longcall @code{name}
+Indicates that the following sequence of instructions is a long call
+to function @code{name}.  The linker will attempt to shorten this call
+sequence if @code{name} is within a 22bit offset of the call.  Only
+valid if the @code{-mrelax} command line switch has been enabled.
+
+@cindex @code{longjump} pseudo-op, V850
+@item .longjump @code{name}
+Indicates that the following sequence of instructions is a long jump
+to label @code{name}.  The linker will attempt to shorten this code
+sequence if @code{name} is within a 22bit offset of the jump.  Only
+valid if the @code{-mrelax} command line switch has been enabled.
+
 @end table
 
 
 For information on the V850 instruction set, see @cite{V850
 Family 32-/16-Bit single-Chip Microcontroller Architecture Manual} from NEC.
 Ltd.
-