hiword macro, problem

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snifit

Joined: 10 Dec 2004
Posts: 12
Location: Sweden

snifit 11 Jan 2005, 22:36

What I want is:
First compare the HIWORD in a 32 bit value, if it's a match then jump somewhere and there test the LOWORD.

This is what my macros look like:

HIWORD

Code:

macro casehiw var,[cons,label] {
  common
  push var
  xor var,0FFFFh
  shr var,16

  forward
  cmp var,cons
  je label

  common
  pop var
}

LOWORD

Code:

macro caselow var,[cons,label] {
  common
  push var
  and var,0FFFFh

  forward
  cmp var,cons
  je label

  common
  pop var
}

I need the pushed value poped before jumping to the label and in these macros I don't think that's the case.
So somehow i need to pop the value if equal (so I can check the loword later on), and that's what I don't know how to do.

Any help is appreciated.

11 Jan 2005, 22:36

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 12 Jan 2005, 00:08

maybe:

Code:

macro casehiw var,[cons,label] { 
  common 
  local ..behind,..taken
  push var 
  xor var,0FFFFh 
  shr var,16 

  forward 
  cmp var,cons 
  je ..taken

  common 
  jmp ..behind
  ..taken:
  pop var
  jmp label
..behind
  pop var 
}

12 Jan 2005, 00:08

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 12 Jan 2005, 06:30

In all cases

Code:

xor var,0FFFFh

is meaningless. Smile

12 Jan 2005, 06:30

snifit

Joined: 10 Dec 2004
Posts: 12
Location: Sweden

snifit 12 Jan 2005, 08:20

True, since shr shifts in zeros, well thanks guys

12 Jan 2005, 08:20

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