diff options
Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 28dcf2e..0ba3af2 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -4655,6 +4655,23 @@ page of memory, and changes them to use the eight-bit address form. (That is: the linker turns @samp{mov.b @code{@@}@var{aa}:16} into @samp{mov.b @code{@@}@var{aa}:8} whenever the address @var{aa} is in the top page of memory). + +@item bit manipulation instructions +@command{ld} finds all bit manipulation instructions like @code{band, bclr, +biand, bild, bior, bist, bixor, bld, bnot, bor, bset, bst, btst, bxor} +which use 32 bit and 16 bit absolute address form, but refer to the top +page of memory, and changes them to use the 8 bit address form. +(That is: the linker turns @samp{bset #xx:3,@code{@@}@var{aa}:32} into +@samp{bset #xx:3,@code{@@}@var{aa}:8} whenever the address @var{aa} is in +the top page of memory). + +@item system control instructions +@command{ld} finds all @code{ldc.w, stc.w} instrcutions which use the +32 bit absolute address form, but refer to the top page of memory, and +changes them to use 16 bit address form. +(That is: the linker turns @samp{ldc.w @code{@@}@var{aa}:32,ccr} into +@samp{ldc.w @code{@@}@var{aa}:16,ccr} whenever the address @var{aa} is in +the top page of memory). @end table @ifclear GENERIC |