* MIPS fppipe(): added error handling, and fixed parameter location (assembler procedures should not modify initial location of parameters, but one of MIPS code generator hacks copies parameters to stack. That hack is subject to remove).

git-svn-id: trunk@23610 -

rtl/linux/mips/bsyscall.inc

@@ -24,12 +24,25 @@ Function fppipe(var fildes : tfildes):cint;assembler;
   * argument.  Historically that used to be expensive in Linux.  These days
   * the performance advantage is negligible.
 }
+var
+  tmp: pointer;
 asm
-  li $v0,syscall_nr_pipe
+  sw   $a0,tmp             { if $a0 is preserved in syscall then this is not needed }
+  li   $v0,syscall_nr_pipe
   syscall
+  nop
+  beq  $a3,$0,.L1
+  nop
+  move $a0,$v0
+  jal  fpseterrno
+  nop
+  b    .L2
+  li   $v0,-1              { in delay slot }
+.L1:
   { the two files descriptors are now in v0 and v1 registers 
     copying them back into fildes variable }
-  lw $t1,fildes
-  sw $v0,($t1)
-  sw $v1,4($t1)
+  lw   $t1,tmp
+  sw   $v0,($t1)
+  sw   $v1,4($t1)
+.L2:
 end;