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-version 1.222, 2010/04/25 18:27:09
+version 1.223, 2010/08/02 19:03:49
  Line 13001  conditional branch and leaving away the
  then,
  @end example
+ The calling conventions for 32-bit MIPS machines is to pass the first
+arguments in registers @code{$4}..@code{$7}, and to use
+ @code{$v0}-@code{$v1} for return values.  In addition to these
+ registers, it is ok to clobber registers @code{$t0}-@code{$t8} without
+ saving and restoring them.
+ If you use @code{jalr,} to call into dynamic library routines, you
+ must first load the called function's address into @code{$t9}, which
+ is used by position-indirect code to do relative memory accesses.
+ Here is an example of a MIPS32 @code{abi-code} word:
+ @example
+ abi-code my+  ( n1 n2 -- n3 )
+   \ SP passed in $4, returned in $v0
+   $t0  0 $4  lw,         \ load n1, n2 from stack
+   $t1  4 $4  lw,
+   $t0  $t0  $t1  addu,   \ add n1+n2, result in $t0
+   $t0  4 $4  sw,         \ store result (overwriting n1)
+   $ra  jr,               \ return to caller
+   $v0  $4  4  addiu,     \ (delay slot) return uptated SP in $v0
+ end-code
+ @end example
  @node PowerPC assembler, ARM Assembler, MIPS assembler, Assembler and Code Words
  @subsection PowerPC assembler