Look for $a0 as argument of exit syscall.

ChangeLog

+2003-08-13  Benot Perrot  <benoit@lrde.epita.fr>
+
+	* src/vm/virtual_machine.cc (syscall): Look for $a0 as argument of 
+	exit syscall.
+	* tests/good/add-sub.s,
+	* tests/good/and-or-nor-xor.s,
+	* tests/good/exit.s,
+	* tests/good/extended-euclide.s,
+	* tests/good/gtcd.s,
+	* tests/good/modular-exponent.s,
+	* tests/good/neg.s,
+	* tests/good/not.s,
+	* tests/good/print.s,
+	* tests/good/print_int.s,
+	* tests/good/read_int.s,
+	* tests/good/seq-sne.s,
+	* tests/good/shift.s,
+	* tests/runtime/neg.s,
+	* tests/runtime/no-main.s,
+	* tests/solve/undefined-labels.s,
+	* tests/syntax/asciiz-wrong-param.s,
+	* tests/syntax/too-many-operands.s,
+	* tests/unlimited/simple-exp.s:
+	Use exit(0).
+	
 2003-08-11  Benot Perrot  <benoit@lrde.epita.fr>
 
 	* tests/Makefile.am: Distribute tests machinery.

NEWS

 -*- text -*-
 
 New in 0.4:
+* Look for $a0 as argument of exit syscall.
+* Distribute testsuite.
 * --fill-delay-slot: fill delay slot of native branch instructions with NOP.
 
 New in 0.3, 2003-07-29:

prj

@@ -2,15 +2,16 @@
 (Created-By-Prcs-Version 1 3 2)
 
 (Project-Description "")
-(Project-Version     mipsy 0 47)
-(Parent-Version      mipsy 0 46)
+(Project-Version     mipsy 0 48)
+(Parent-Version      mipsy 0 47)
 
 (Version-Log
-"More Ignores.")
+"Look for $a0 as argument of exit syscall.
+")
 (New-Version-Log
 "")
 
-(Checkin-Time        "Tue, 12 Aug 2003 21:21:22 +0200")
+(Checkin-Time        "Wed, 13 Aug 2003 15:20:52 +0200")
 (Checkin-Login       benoit)
 
 (Files
@@ -18,9 +19,9 @@
     ;; ./
   (AUTHORS (mipsy/0_AUTHORS 1.1 644))
   (COPYING (mipsy/1_COPYING 1.1 644))
-  (ChangeLog (mipsy/2_ChangeLog 1.41 644))
+  (ChangeLog (mipsy/2_ChangeLog 1.42 644))
   (Makefile.am (mipsy/3_Makefile.a 1.4 644))
-  (NEWS (mipsy/b/25_NEWS 1.3 644))
+  (NEWS (mipsy/b/25_NEWS 1.4 644))
   (README (mipsy/4_README 1.2 644))
   (TODO (mipsy/5_TODO 1.2 644))
   (bootstrap (mipsy/b/14_bootstrap 1.1 755))
@@ -98,7 +99,7 @@
   (src/vm/memory.hh (mipsy/b/2_memory.hh 1.6 644))
   (src/vm/segment.hh (mipsy/b/3_segment.hh 1.2 644))
   (src/vm/table.hh (mipsy/b/4_table.hh 1.2 644))
-  (src/vm/virtual_machine.cc (mipsy/b/5_virtual_ma 1.14 604))
+  (src/vm/virtual_machine.cc (mipsy/b/5_virtual_ma 1.15 604))
   (src/vm/virtual_machine.hh (mipsy/b/6_virtual_ma 1.10 604))
   (src/vm/vm-tasks.cc (mipsy/b/7_vm-tasks.c 1.4 604))
   (src/vm/vm-tasks.hh (mipsy/b/8_vm-tasks.h 1.3 604))
@@ -111,20 +112,20 @@
 
     ;; ./tests/good/
   (tests/good/Makefile.am (mipsy/b/30_Makefile.a 1.1 644))
-  (tests/good/add-sub.s (mipsy/b/31_add-sub.s 1.1 644))
-  (tests/good/and-or-nor-xor.s (mipsy/b/32_and-or-nor 1.1 644))
-  (tests/good/exit.s (mipsy/b/33_exit.s 1.1 644))
-  (tests/good/extended-euclide.s (mipsy/b/34_extended-e 1.1 644))
-  (tests/good/gtcd.s (mipsy/b/35_gtcd.s 1.1 644))
-  (tests/good/modular-exponent.s (mipsy/b/36_modular-ex 1.1 644))
-  (tests/good/neg.s (mipsy/b/37_neg.s 1.1 644))
-  (tests/good/not.s (mipsy/b/38_not.s 1.1 644))
-  (tests/good/print.s (mipsy/b/39_print.s 1.1 644))
-  (tests/good/print_int.s (mipsy/b/40_print_int. 1.1 644))
+  (tests/good/add-sub.s (mipsy/b/31_add-sub.s 1.2 644))
+  (tests/good/and-or-nor-xor.s (mipsy/b/32_and-or-nor 1.2 644))
+  (tests/good/exit.s (mipsy/b/33_exit.s 1.2 644))
+  (tests/good/extended-euclide.s (mipsy/b/34_extended-e 1.2 644))
+  (tests/good/gtcd.s (mipsy/b/35_gtcd.s 1.2 644))
+  (tests/good/modular-exponent.s (mipsy/b/36_modular-ex 1.2 644))
+  (tests/good/neg.s (mipsy/b/37_neg.s 1.2 644))
+  (tests/good/not.s (mipsy/b/38_not.s 1.2 644))
+  (tests/good/print.s (mipsy/b/39_print.s 1.2 644))
+  (tests/good/print_int.s (mipsy/b/40_print_int. 1.2 644))
   (tests/good/read_int.in (mipsy/b/41_read_int.i 1.1 644))
-  (tests/good/read_int.s (mipsy/b/42_read_int.s 1.1 644))
-  (tests/good/seq-sne.s (mipsy/b/43_seq-sne.s 1.1 644))
-  (tests/good/shift.s (mipsy/b/44_shift.s 1.1 644))
+  (tests/good/read_int.s (mipsy/b/42_read_int.s 1.2 644))
+  (tests/good/seq-sne.s (mipsy/b/43_seq-sne.s 1.2 644))
+  (tests/good/shift.s (mipsy/b/44_shift.s 1.2 644))
 
     ;; ./tests/lexical/
   (tests/lexical/Makefile.am (mipsy/b/45_Makefile.a 1.1 644))
@@ -136,21 +137,21 @@
 
     ;; ./tests/runtime/
   (tests/runtime/Makefile.am (mipsy/b/51_Makefile.a 1.1 644))
-  (tests/runtime/neg.s (mipsy/c/0_neg.s 1.1 644))
-  (tests/runtime/no-main.s (mipsy/c/1_no-main.s 1.1 644))
+  (tests/runtime/neg.s (mipsy/c/0_neg.s 1.2 644))
+  (tests/runtime/no-main.s (mipsy/c/1_no-main.s 1.2 644))
 
     ;; ./tests/solve/
   (tests/solve/Makefile.am (mipsy/c/2_Makefile.a 1.1 644))
-  (tests/solve/undefined-labels.s (mipsy/c/3_undefined- 1.1 644))
+  (tests/solve/undefined-labels.s (mipsy/c/3_undefined- 1.2 644))
 
     ;; ./tests/syntax/
   (tests/syntax/Makefile.am (mipsy/c/4_Makefile.a 1.1 644))
-  (tests/syntax/asciiz-wrong-param.s (mipsy/c/5_asciiz-wro 1.1 604))
-  (tests/syntax/too-many-operands.s (mipsy/c/6_too-many-o 1.1 644))
+  (tests/syntax/asciiz-wrong-param.s (mipsy/c/5_asciiz-wro 1.2 604))
+  (tests/syntax/too-many-operands.s (mipsy/c/6_too-many-o 1.2 644))
 
     ;; ./tests/unlimited/
   (tests/unlimited/Makefile.am (mipsy/c/7_Makefile.a 1.1 644))
-  (tests/unlimited/simple-exp.s (mipsy/c/8_simple-exp 1.1 644))
+  (tests/unlimited/simple-exp.s (mipsy/c/8_simple-exp 1.2 644))
 
   (prj (mipsy.prj) :symlink)
 )

src/vm/virtual_machine.cc

@@ -542,9 +542,11 @@ namespace vm
 	cpu.set_v0(memory.sbrk(cpu.get_a0()));
 	break;
 
-	// exit
+	// exit (status : $a0)
       case 10:
 	halt = true;
+	if (!exit_status)
+	  exit_status = (exit_t) cpu.get_a0();
 	break;
 	
       default:

tests/good/add-sub.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/and-or-nor-xor.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/exit.s

 ### test exit syscall
 	.text
 main:
+	li	$a0, 0
 	li	$v0, 10
 	syscall

tests/good/extended-euclide.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/gtcd.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/modular-exponent.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/neg.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/not.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/print.s

@@ -7,5 +7,6 @@ main:
 	li	$a0, msg
 	li	$v0, 4
 	syscall
+	li	$a0, 0
 	li	$v0, 10
 	syscall

tests/good/print_int.s

@@ -4,5 +4,6 @@ main:
 	li	$a0, 2097
 	li	$v0, 1
 	syscall
+	li	$a0, 0
 	li	$v0, 10
 	syscall

tests/good/read_int.s

@@ -62,5 +62,6 @@ main:
 	li	$v0, 4
 	syscall
 	
+	li	$a0, 0
 	li	$v0, 10
 	syscall

tests/good/seq-sne.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/good/shift.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/runtime/neg.s

 ### runtime library
 	.text
 exit:
+	li	$a0, 0
 	li	$v0, 10
 	syscall
 print:

tests/runtime/no-main.s

 	.text
 foo:	
+	li	$a0, 0
 	li	$v0, 10
 	syscall
\ No newline at end of file

tests/solve/undefined-labels.s

@@ -5,5 +5,6 @@ main:
 	la	$a0, baz
 	li	$v0, 4
 	syscall
+	li	$a0, 0
 	li	$v0, 10
 	syscall