initial commit

.gitignore

@@ -0,0 +1,2 @@
+/true
+/false

Makefile

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+TARGET ?= riscv64-linux-gnu
+AS = $(TARGET)-as
+LD = $(TARGET)-ld
+
+.SUFFIXES:
+
+all: true false
+#all: cat echo
+
+%: %.o
+	$(LD) -o $@ $<
+
+%.o: %.s
+	$(AS) -o $@ $<

false.s

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+.globl _start
+.option rvc # enable compressed instructions
+
+.text
+
+_start:
+    li a7, 93 # sys_exit
+    li a0, 1
+    ecall
+

true.s

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+.globl _start
+.option rvc # enable compressed instructions
+
+.text
+
+_start:
+    li a7, 93 # sys_exit
+    li a0, 0
+    ecall
+