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+# MACRO: exit
+ .macro exit nr
+ ori r5, r0, \nr;
+ # Trap function 1: exit().
+ ori r4, r0, 1;
+ syscall;
+ .endm
+
+# MACRO: pass
+# Write 'pass' to stdout and quit
+ .macro pass
+ # Trap function 5: write().
+ ori r4, r0, 5;
+ # Use stdout.
+ ori r5, r0, 1;
+ # Point to the string.
+ lui r6, %hi(1f);
+ ori r6, r6, %lo(1f);
+ # Number of bytes to write.
+ ori r7, r0, 5;
+ # Trigger OS trap.
+ syscall;
+ exit 0
+ .data
+ 1: .asciz "pass\n"
+ .endm
+
+# MACRO: fail
+# Write 'fail' to stdout and quit
+ .macro fail
+ # Trap function 5: write().
+ ori r4, r0, 5;
+ # Use stdout.
+ ori r5, r0, 1;
+ # Point to the string.
+ lui r6, %hi(1f);
+ ori r6, r6, %lo(1f);
+ # Number of bytes to write.
+ ori r7, r0, 5;
+ # Trigger OS trap.
+ syscall;
+ exit 0
+ .data
+ 1: .asciz "fail\n"
+ .endm
+
+# MACRO: start
+# All assembler tests should start with a call to "start"
+ .macro start
+ .text
+.global _start
+_start:
+ .endm