Commit graph

6 commits

Author SHA1 Message Date
David Given 8edbff9795 Add assembler support for fixing up arbitrary oris/addi pairs of instructions;
this should allow oris/lwz constant value loads, which will save an opcode.
2017-01-15 00:15:01 +01:00
David Given a8c4dac67c Merge from default (merging in George Koehler's PowerPC changes). 2016-10-29 22:40:40 +02:00
David Given 4a093b9eba Add li and mr pseudoinstructions. 2016-10-18 00:21:32 +02:00
George Koehler 5b69777647 Rename our pseudo-opcode 'la' to 'li32'.
GNU as has "la %r4,8(%r3)" as an alias for "addi %r4,%r3,8", meaning
to load the address of the thing at 8(%r3).  Our 'la', now 'li32',
makes an addis/ori pair to load an immediate 32-bit value.  For
example, "li32 r4,23456789" loads a big number.
2016-09-18 17:03:23 -04:00
David Given 80cb6ba927 Eliminate the RELOH2 relocation, as it never worked --- the address would be
calculated incorrectly because of overflow errors.

Replace it with an extended RELOPPC relocation which understands addis/ori
pairs; add an la pseudoop to the assembler which generates these and the
appropriate relocation. Make good.

--HG--
branch : dtrg-experimental-powerpc-branch
2016-09-17 12:43:15 +02:00
dtrg 4dd1ff6d80 Archival checkin (semi-working code). 2007-11-02 18:56:58 +00:00