From a5b5f4112abd2c6aefaeb4c048064f847f4be7af Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Mon, 5 Sep 2011 18:27:05 +0200
Subject: PPC: Disassemble y-bit instead of at-bits for conditional branches.
---
lib/dis_ppc.lua | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/lib/dis_ppc.lua b/lib/dis_ppc.lua
index 13d87c70..b061a26e 100644
--- a/lib/dis_ppc.lua
+++ b/lib/dis_ppc.lua
@@ -464,23 +464,13 @@ local function disass_ins(ctx)
cn = band(bo, 2) == 0 and "dnz" or "dz"
if band(bo, 0x10) == 0 then
cn = cn..(band(bo, 8) == 0 and "f" or "t")
- if band(bo, 1) ~= 0 then
- name = name..(band(op, 0x8000) ~= 0 and "-" or "+")
- end
- elseif band(bo, 8) ~= 0 then
- name = name..(band(bo, 1) == 0 and "-" or "+")
- elseif band(bo, 1) ~= 0 then
- name = name..(band(op, 0x8000) ~= 0 and "-" or "+")
end
if band(bo, 0x10) == 0 then x = condfmt(cond) end
+ name = name..(band(bo, 1) == band(rshift(op, 15), 1) and "-" or "+")
elseif band(bo, 0x10) == 0 then
cn = map_cond[band(cond, 3) + (band(bo, 8) == 0 and 4 or 0)]
- if band(bo, 2) ~= 0 then
- name = name..(band(bo, 1) == 0 and "-" or "+")
- elseif band(bo, 1) ~= 0 then
- name = name..(band(op, 0x8000) ~= 0 and "-" or "+")
- end
if cond > 3 then x = "cr"..rshift(cond, 2) end
+ name = name..(band(bo, 1) == band(rshift(op, 15), 1) and "-" or "+")
end
name = gsub(name, "_", cn)
elseif p == "J" then
--
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