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Add some register aliases + documentation, and correct a bound 

git-svn-id: file:///home/svn/incoming/trunk@3279 4d416f70-5f16-0410-b530-b9f4589650da
This commit is contained in:
vlad902 2005-12-30 20:26:06 +00:00
parent 0d9875d40f
commit 61c715ac27
1 changed files with 10 additions and 5 deletions
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15
lib/rex/arch/sparc.rb
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@ -4,7 +4,7 @@ module Rex
module Arch
#
# Everything here is mostly stolen from vlad's perl x86 stuff
# Everything here is mostly stolen from vlad's perl sparc stuff
#
module Sparc
@ -21,10 +21,11 @@ module Sparc
'l4' => 20, 'l5' => 21, 'l6' => 22, 'l7' => 23,
'i0' => 24, 'i1' => 25, 'i2' => 26, 'i3' => 27,
'i4' => 28, 'i5' => 29, 'i6' => 30, 'i7' => 31,
'sp' => 14, 'fp' => 30,
} # :nodoc:
#
# TODO: documentation required.
# Encodes a SETHI instruction with the value 'constant' being put into 'dst' register
#
def self.sethi(constant, dst)
[
@ -35,7 +36,7 @@ module Sparc
end
#
# TODO: documentation required.
# Encodes an OR instruction with the value 'constant' being OR'ed with the 'src' register into the 'dst' register
#
def self.ori(src, constant, dst)
[
@ -49,10 +50,11 @@ module Sparc
end
#
# TODO: documentation required.
# Puts 'constant' into the 'dst' register using as few instructions as possible by checking the size of the value.
# XXX: signedness support
#
def self.set(constant, dst)
if (constant <= 4096 and constant >= 0)
if (constant <= 4095 and constant >= 0)
ori('g0', constant, dst)
elsif (constant & 0x3ff)
set_dword(constant, dst)
@ -61,6 +63,9 @@ module Sparc
end
end
#
# Puts 'constant' into the 'dst' register using both sethi and ori (necessary to use both uncessarily in some cases with encoders)
#
#
# TODO: documentation required.
#