13 files changed, 128 insertions, 22 deletions
diff --git a/tests/tcg/lm32/Makefile b/tests/tcg/lm32/Makefile
index 8e5d405459..57e7363b2c 100644
--- a/tests/tcg/lm32/Makefile
+++ b/tests/tcg/lm32/Makefile
@@ -3,7 +3,7 @@
 CROSS=lm32-elf-
 
 SIM = qemu-system-lm32
-SIMFLAGS = -M lm32-evr -nographic -device lm32-sys -net none -kernel
+SIMFLAGS = -M lm32-evr -nographic -semihosting -net none -kernel
 
 CC      = $(CROSS)gcc
 AS      = $(CROSS)as
@@ -18,6 +18,7 @@ LDFLAGS = -T$(TSRC_PATH)/linker.ld
 ASFLAGS += -Wa,-I,$(TSRC_PATH)/
 
 CRT        = crt.o
+HELPER     = helper.o
 TESTCASES += test_add.tst
 TESTCASES += test_addi.tst
 TESTCASES += test_and.tst
@@ -91,15 +92,15 @@ all: build
 %.o: $(TSRC_PATH)/%.S
 	$(AS) $(ASFLAGS) -c $< -o $@
 
-%.tst: %.o $(TSRC_PATH)/macros.inc $(CRT)
-	$(LD) $(LDFLAGS) $(NOSTDFLAGS) $(CRT) $< -o $@
+%.tst: %.o $(TSRC_PATH)/macros.inc $(CRT) $(HELPER)
+	$(LD) $(LDFLAGS) $(NOSTDFLAGS) $(CRT) $(HELPER) $< -o $@
 
-build: $(CRT) $(TESTCASES)
+build: $(TESTCASES)
 
 check: $(TESTCASES:test_%.tst=check_%)
 
-check_%: test_%.tst $(CRT) $(SYS)
-	$(SIM) $(SIMFLAGS) $<
+check_%: test_%.tst
+	@$(SIM) $(SIMFLAGS) $<
 
 clean:
-	$(RM) -fr $(TESTCASES) $(CRT)
+	$(RM) -fr $(TESTCASES) $(CRT) $(HELPER)
diff --git a/tests/tcg/lm32/crt.S b/tests/tcg/lm32/crt.S
index 5f9cfd95d3..fc437a3de1 100644
--- a/tests/tcg/lm32/crt.S
+++ b/tests/tcg/lm32/crt.S
@@ -8,9 +8,9 @@ _reset_handler:
 	ori r1, r1, lo(_start)
 	wcsr eba, r1
 	wcsr deba, r1
+	mvhi sp, hi(_fstack)
+	ori sp, sp, lo(_fstack)
 	bi _main
-	nop
-	nop
 
 _breakpoint_handler:
 	ori r25, r25, 1
diff --git a/tests/tcg/lm32/helper.S b/tests/tcg/lm32/helper.S
new file mode 100644
index 0000000000..3351d41e84
--- /dev/null
+++ b/tests/tcg/lm32/helper.S
@@ -0,0 +1,65 @@
+.text
+.global _start, _write, _exit
+.global _tc_fail, _tc_pass
+
+_write:
+	addi sp, sp, -4
+	sw (sp+4), r8
+	mvi r8, 5
+	scall
+	lw r8, (sp+4)
+	addi sp, sp, 4
+	ret
+
+_exit:
+	mvi r8, 1
+	scall
+1:
+	bi 1b
+
+_tc_pass:
+.data
+1:
+	.ascii "OK\n"
+2:
+.text
+	addi sp, sp, -16
+	sw (sp+4), ra
+	sw (sp+8), r1
+	sw (sp+12), r2
+	sw (sp+16), r3
+	mvi r1, 1
+	mvhi r2, hi(1b)
+	ori r2, r2, lo(1b)
+	mvi r3, (2b - 1b)
+	calli _write
+	lw r3, (sp+16)
+	lw r2, (sp+12)
+	lw r1, (sp+8)
+	lw ra, (sp+4)
+	addi sp, sp, 16
+	ret
+
+_tc_fail:
+.data
+1:
+	.ascii "FAILED\n"
+2:
+.text
+	addi sp, sp, -16
+	sw (sp+4), ra
+	sw (sp+8), r1
+	sw (sp+12), r2
+	sw (sp+16), r3
+	sw (sp+4), ra
+	mvi r1, 1
+	mvhi r2, hi(1b)
+	ori r2, r2, lo(1b)
+	mvi r3, (2b - 1b)
+	calli _write
+	lw r3, (sp+16)
+	lw r2, (sp+12)
+	lw r1, (sp+8)
+	lw ra, (sp+4)
+	addi sp, sp, 16
+	ret
diff --git a/tests/tcg/lm32/macros.inc b/tests/tcg/lm32/macros.inc
index 367c7c50d8..360ad53c9f 100644
--- a/tests/tcg/lm32/macros.inc
+++ b/tests/tcg/lm32/macros.inc
@@ -1,12 +1,26 @@
 
+.equ MAX_TESTNAME_LEN, 32
 .macro test_name name
 	.data
 tn_\name:
-	.asciz "\name"
+	.ascii "\name"
+	.space MAX_TESTNAME_LEN - (. - tn_\name), ' '
 	.text
-	mvhi r13, hi(tn_\name)
-	ori r13, r13, lo(tn_\name)
-	sw (r12+8), r13
+	.global \name
+\name:
+	addi sp, sp, -12
+	sw (sp+4), r1
+	sw (sp+8), r2
+	sw (sp+12), r3
+	mvi r1, 1
+	mvhi r2, hi(tn_\name)
+	ori r2, r2, lo(tn_\name)
+	mvi r3, MAX_TESTNAME_LEN
+	calli _write
+	lw r3, (sp+12)
+	lw r2, (sp+8)
+	lw r1, (sp+4)
+	addi sp, sp, 12
 .endm
 
 .macro load reg val
@@ -15,13 +29,12 @@ tn_\name:
 .endm
 
 .macro tc_pass
-	mvi r13, 0
-	sw (r12+4), r13
+	calli _tc_pass
 .endm
 
 .macro tc_fail
-	mvi r13, 1
-	sw (r12+4), r13
+	addi r12, r12, 1
+	calli _tc_fail
 .endm
 
 .macro check_r3 val
@@ -63,14 +76,12 @@ tn_\name:
 	.global _main
 	.text
 _main:
-	mvhi r12, hi(0xffff0000)      # base address of test block
-	ori r12, r12, lo(0xffff0000)
+	mvi r12, 0
 .endm
 
 .macro end
-	sw (r12+0), r0
-1:
-	bi 1b
+	mv r1, r12
+	calli _exit
 .endm
 
 # base +
diff --git a/tests/tcg/lm32/test_lb.S b/tests/tcg/lm32/test_lb.S
index f84d21ead9..d677eea4c4 100644
--- a/tests/tcg/lm32/test_lb.S
+++ b/tests/tcg/lm32/test_lb.S
@@ -8,10 +8,12 @@ lb r3, (r1+0)
 check_r3 0x7e
 
 test_name LB_2
+load r1 data
 lb r3, (r1+1)
 check_r3 0x7f
 
 test_name LB_3
+load r1 data
 lb r3, (r1+-1)
 check_r3 0x7d
 
@@ -21,10 +23,12 @@ lb r3, (r1+0)
 check_r3 0xfffffffe
 
 test_name LB_5
+load r1 data_msb
 lb r3, (r1+1)
 check_r3 0xffffffff
 
 test_name LB_6
+load r1 data_msb
 lb r3, (r1+-1)
 check_r3 0xfffffffd
 
diff --git a/tests/tcg/lm32/test_lbu.S b/tests/tcg/lm32/test_lbu.S
index 4c1786ad71..dc5d5f67d3 100644
--- a/tests/tcg/lm32/test_lbu.S
+++ b/tests/tcg/lm32/test_lbu.S
@@ -8,10 +8,12 @@ lbu r3, (r1+0)
 check_r3 0x7e
 
 test_name LBU_2
+load r1 data
 lbu r3, (r1+1)
 check_r3 0x7f
 
 test_name LBU_3
+load r1 data
 lbu r3, (r1+-1)
 check_r3 0x7d
 
@@ -21,10 +23,12 @@ lbu r3, (r1+0)
 check_r3 0xfe
 
 test_name LBU_5
+load r1 data_msb
 lbu r3, (r1+1)
 check_r3 0xff
 
 test_name LBU_6
+load r1 data_msb
 lbu r3, (r1+-1)
 check_r3 0xfd
 
diff --git a/tests/tcg/lm32/test_lh.S b/tests/tcg/lm32/test_lh.S
index e57d9e35cf..397996bddd 100644
--- a/tests/tcg/lm32/test_lh.S
+++ b/tests/tcg/lm32/test_lh.S
@@ -8,10 +8,12 @@ lh r3, (r1+0)
 check_r3 0x7e7f
 
 test_name LH_2
+load r1 data
 lh r3, (r1+2)
 check_r3 0x7071
 
 test_name LH_3
+load r1 data
 lh r3, (r1+-2)
 check_r3 0x7c7d
 
@@ -21,10 +23,12 @@ lh r3, (r1+0)
 check_r3 0xfffffeff
 
 test_name LH_5
+load r1 data_msb
 lh r3, (r1+2)
 check_r3 0xfffff0f1
 
 test_name LH_6
+load r1 data_msb
 lh r3, (r1+-2)
 check_r3 0xfffffcfd
 
diff --git a/tests/tcg/lm32/test_lhu.S b/tests/tcg/lm32/test_lhu.S
index e648775d94..8de7c52560 100644
--- a/tests/tcg/lm32/test_lhu.S
+++ b/tests/tcg/lm32/test_lhu.S
@@ -8,10 +8,12 @@ lhu r3, (r1+0)
 check_r3 0x7e7f
 
 test_name LHU_2
+load r1 data
 lhu r3, (r1+2)
 check_r3 0x7071
 
 test_name LHU_3
+load r1 data
 lhu r3, (r1+-2)
 check_r3 0x7c7d
 
@@ -21,10 +23,12 @@ lhu r3, (r1+0)
 check_r3 0xfeff
 
 test_name LHU_5
+load r1 data_msb
 lhu r3, (r1+2)
 check_r3 0xf0f1
 
 test_name LHU_6
+load r1 data_msb
 lhu r3, (r1+-2)
 check_r3 0xfcfd
 
diff --git a/tests/tcg/lm32/test_lw.S b/tests/tcg/lm32/test_lw.S
index f8c919d2b8..996e5f8c88 100644
--- a/tests/tcg/lm32/test_lw.S
+++ b/tests/tcg/lm32/test_lw.S
@@ -8,10 +8,12 @@ lw r3, (r1+0)
 check_r3 0x7e7f7071
 
 test_name LW_2
+load r1 data
 lw r3, (r1+4)
 check_r3 0x72737475
 
 test_name LW_3
+load r1 data
 lw r3, (r1+-4)
 check_r3 0x7a7b7c7d
 
diff --git a/tests/tcg/lm32/test_sb.S b/tests/tcg/lm32/test_sb.S
index 89e39d621d..b15a89d342 100644
--- a/tests/tcg/lm32/test_sb.S
+++ b/tests/tcg/lm32/test_sb.S
@@ -9,11 +9,13 @@ sb (r1+0), r2
 check_mem data 0xaa000000
 
 test_name SB_2
+load r1 data
 load r2 0xf0f1f2bb
 sb (r1+1), r2
 check_mem data 0xaabb0000
 
 test_name SB_3
+load r1 data
 load r2 0xf0f1f2cc
 sb (r1+-1), r2
 check_mem data0 0x000000cc
diff --git a/tests/tcg/lm32/test_scall.S b/tests/tcg/lm32/test_scall.S
index b442e32374..46032f841d 100644
--- a/tests/tcg/lm32/test_scall.S
+++ b/tests/tcg/lm32/test_scall.S
@@ -5,6 +5,10 @@ start
 test_name SCALL_1
 mvi r1, 1
 wcsr IE, r1
+# we are running in a semi hosted environment
+# therefore we have to set r8 to some unused system
+# call
+mvi r8, 0
 insn:
 scall
 check_excp 64
diff --git a/tests/tcg/lm32/test_sh.S b/tests/tcg/lm32/test_sh.S
index ea8b3f2067..bba10224f6 100644
--- a/tests/tcg/lm32/test_sh.S
+++ b/tests/tcg/lm32/test_sh.S
@@ -9,11 +9,13 @@ sh (r1+0), r2
 check_mem data 0xaaaa0000
 
 test_name SH_2
+load r1 data
 load r2 0xf0f1bbbb
 sh (r1+2), r2
 check_mem data 0xaaaabbbb
 
 test_name SH_3
+load r1 data
 load r2 0xf0f1cccc
 sh (r1+-2), r2
 check_mem data0 0x0000cccc
diff --git a/tests/tcg/lm32/test_sw.S b/tests/tcg/lm32/test_sw.S
index d1fdadce61..2b1c017e7b 100644
--- a/tests/tcg/lm32/test_sw.S
+++ b/tests/tcg/lm32/test_sw.S
@@ -9,16 +9,19 @@ sw (r1+0), r2
 check_mem data 0xaabbccdd
 
 test_name SW_2
+load r1 data
 load r2 0x00112233
 sw (r1+4), r2
 check_mem data1 0x00112233
 
 test_name SW_3
+load r1 data
 load r2 0x44556677
 sw (r1+-4), r2
 check_mem data0 0x44556677
 
 test_name SW_4
+load r1 data
 sw (r1+0), r1
 lw r3, (r1+0)
 check_r3 data