sim: lm32: add a basic testsuite

sim/testsuite/sim/lm32/ChangeLog

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+2015-04-05  Mike Frysinger  <vapier@gentoo.org>
+
+	* pass.s, allinsn.exp, testutils.inc: New files.

sim/testsuite/sim/lm32/allinsn.exp

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+# lm32 simulator testsuite
+
+if [istarget lm32-*] {
+    # all machines
+    set all_machs "lm32"
+
+    foreach src [lsort [glob -nocomplain $srcdir/$subdir/*.s]] {
+	# If we're only testing specific files and this isn't one of them,
+	# skip it.
+	if ![runtest_file_p $runtests $src] {
+	    continue
+	}
+	run_sim_test $src $all_machs
+    }
+}

sim/testsuite/sim/lm32/pass.s

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+# check that the sim doesn't die immediately.
+# mach: lm32
+
+.include "testutils.inc"
+
+	start
+	pass

sim/testsuite/sim/lm32/testutils.inc

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+# MACRO: exit
+	.macro exit nr
+	mvi r1, \nr;
+	# Trap function 1: exit().
+	mvi r8, 1;
+	scall;
+	.endm
+
+# MACRO: pass
+# Write 'pass' to stdout and quit
+	.macro pass
+	# Trap function 5: write().
+	mvi r8, 5;
+	# Use stdout.
+	mvi r1, 1;
+	# Point to the string.
+	mvhi r2, hi(1f)
+	ori r2, r2, lo(1f)
+	# Number of bytes to write.
+	mvi r3, 5;
+	# Trigger OS trap.
+	scall;
+	exit 0
+	.data
+	1: .asciz "pass\n"
+	.endm
+
+# MACRO: fail
+# Write 'fail' to stdout and quit
+	.macro fail
+	# Trap function 5: write().
+	mvi r8, 5;
+	# Use stdout.
+	mvi r1, 1;
+	# Point to the string.
+	mvhi r2, hi(1f)
+	ori r2, r2, lo(1f)
+	# Number of bytes to write.
+	mvi r3, 5;
+	# Trigger OS trap.
+	scall;
+	exit 0
+	.data
+	1: .asciz "fail\n"
+	.endm
+
+# MACRO: start
+# All assembler tests should start with a call to "start"
+	.macro start
+	.data
+.global _fstack
+_fstack:
+	.rept 0x1024
+	.byte 00
+	.endr
+	.text
+.global _start
+_start:
+	.endm