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Add MN10300 linker relaxation support for symbol differences

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Nick Clifton
2007-10-19 17:31:31 +00:00
parent 97030eea00
commit bfff164249
32 changed files with 672 additions and 100 deletions
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12
gas/doc/internals.texi
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@ -1535,6 +1535,18 @@ The function should return the debug format that is preferred by the CPU
backend. This format will be used when generating assembler specific debug
information.
@item md_allow_local_subtract (@var{left}, @var{right}, @var{section})
If defined, GAS will call this macro when evaluating an expression which is the
difference of two symbols defined in the same section. It takes three
arguments: @code{expressioS * @var{left}} which is the symbolic expression on
the left hand side of the subtraction operation, @code{expressionS *
@var{right}} which is the symbolic expression on the right hand side of the
subtraction, and @code{segT @var{section}} which is the section containing the two
symbols. The macro should return a non-zero value if the expression should be
evaluated. Targets which implement link time relaxation which may change the
position of the two symbols relative to each other should ensure that this
macro returns zero in situations where this can occur.
@end table
@node Object format backend