[A89] Re: more questions (return value)

To: assembly-89@lists.ticalc.org
Subject: [A89] Re: more questions (return value)
From: Joel Thompson <joelt49@yahoo.com>
Date: Thu, 22 Aug 2002 20:35:44 -0700 (PDT)
In-Reply-To: <p05100300b98b18e4781b@[192.168.0.2]>
Reply-To: assembly-89@lists.ticalc.org

   /* Support for RETURN_VALUE */
   move.l (%sp)+,%a0
   cmpi.w #0x21EE,(%a0)
   bne.s __A2
   addq.l #2,%a0
__A2:
   jmp (%a0,4)

OK, this is a VERY, VERY, VERY, VERY dirty hack in the
TIGCC lib code. OK, the move.l (%sp)+,%a0 pops the
return address off the stack. Then, it compares it
with 0x21EE. If it is, then it adds 6 bytes to the
return address, otherwise it just adds 4 and jumps to
the address. What it does is is bypass the AMS code to
restore the estack to its value before running the program.

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Follow-Ups:

[A89] Re: more questions (return value)

From: "R.A." <funkaster@mac.com>

References:

[A89] more questions (return value)

From: "R.A." <funkaster@mac.com>