Chris Lattner
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c877d8f44c
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add basic encoding support for immediates and registers, allowing us
to encode all of these instructions correctly (for example):
mflr r0 ; encoding: [0x7c,0x08,0x02,0xa6]
stw r0, 8(r1) ; encoding: [0x90,0x01,0x00,0x08]
stwu r1, -64(r1) ; encoding: [0x94,0x21,0xff,0xc0]
llvm-svn: 119118
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2010-11-15 04:51:55 +00:00 |
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Chris Lattner
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9ec375c8ea
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Implement a basic MCCodeEmitter for PPC. This doesn't handle
fixups yet, and doesn't handle actually encoding operand values,
but this is enough for llc -show-mc-encoding to show the base
instruction encoding information, e.g.:
mflr r0 ; encoding: [0x7c,0x08,0x02,0xa6]
stw r0, 8(r1) ; encoding: [0x90,0x00,0x00,0x00]
stwu r1, -64(r1) ; encoding: [0x94,0x00,0x00,0x00]
Ltmp0:
lhz r4, 4(r3) ; encoding: [0xa0,0x00,0x00,0x00]
cmplwi cr0, r4, 8 ; encoding: [0x28,0x00,0x00,0x00]
beq cr0, LBB0_2 ; encoding: [0x40,0x00,0x00,0x00]
llvm-svn: 119116
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2010-11-15 04:16:32 +00:00 |