Difference between revisions of "Assembler:Commands:CALL"

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'''command''' call ''mnemonic'' ''operand''
+
'''command''' call ''size'' ''operand''
  
 
Calls the given operand (address or function), jumps to the given operand then returns.
 
Calls the given operand (address or function), jumps to the given operand then returns.
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!style="width: 80%;background-color:white;" align="left"|Description
 
!style="width: 80%;background-color:white;" align="left"|Description
 
|-
 
|-
|mnemonic '''OPTIONAL'''
+
|size '''OPTIONAL'''
 
|The preferred size of the assembled address
 
|The preferred size of the assembled address
 
|-
 
|-

Revision as of 04:37, 14 March 2017

command call size operand

Calls the given operand (address or function), jumps to the given operand then returns.

Note: A RET must be hit for a CALL to work properly, best to use JMPs if unsure.

Command Parameters

Parameter Description
size OPTIONAL The preferred size of the assembled address
operand The address or symbol to call


Examples

call +1A   // Call from end of command to +1A (hex).
call 00123ABC   // Call the address.
call 0000123456ABCDEF   // Call the address.
call eax   // Call the value of eax.
call rax   // Call the value of rax.
call someSymbol   // Call the user defined symbol.
call someLabel   // Call the label.
call short someLabel   // Call the label with short byte code.
call long someLabel   // Call the label with full address.
call @b   // Call back the closest label
call @f   // Call forward the closest label


Running this script in 64 bit mode:

globalAlloc(memTest, 0x200)
label(testLbl)
memTest:
                          add [rax],al // db 00 00
@@:
                          add [rax],al
                          ret
call short @b
call short @f
                          add [rax],al
@@:
                          add [rax],al
                          ret
                          add [rax],al
call short -8
call short +2
                          add [rax],al
testLbl:
                          add [rax],al
                          ret
call 01160002
                          add [rax],al
call rax
                          add [rax],al
call memTest
                          add [rax],al
call testLbl
                          add [rax],al
call short testLbl
                          add [rax],al
call long testLbl
                          add [rax],al
db 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90

Assembler.CALL.01.png

See also

External links