1 files changed, 44 insertions, 0 deletions
diff --git a/tests/fixtures/argc-argv.s b/tests/fixtures/argc-argv.s
new file mode 100644
index 0000000..4c1d2ac
--- /dev/null
+++ b/tests/fixtures/argc-argv.s
@@ -0,0 +1,44 @@
+; Minimal argc/argv and explicit "--" separator example.
+;
+; Assemble/link:
+;   ../utils/mcpu-as -o argc-argv.o argc-argv.s
+;   ../utils/mcpu-ld -o argc-argv --stack-size=4K argc-argv.o
+;
+; Run:
+;   ../utils/mcpu-run \
+;     --on-step=print-int-regs:r64@0x00000,r8@0x00020,r8@0x00021 \
+;     -- \
+;     argc-argv --help -x
+;
+; Guest argv is:
+;   argv[0] = "argc-argv"
+;   argv[1] = "--help"
+;   argv[2] = "-x"
+;
+; The example prints argc, argv[1][2] ('h') and argv[2][1] ('x') as integers.
+; Expected output:
+;   3 104 120
+
+.text
+_start_life:
+loop:
+        ; Persistent McpuStartup at SP:
+        ;   SP+8  = argc
+        ;   SP+16 = argv (PTR64 to argv[0])
+        LDSP    r64@0x00000, 8
+        LDSP    r64@0x00008, 16
+
+        ; argv[1]
+        PADDI   r64@0x00010, r64@0x00008, 8
+        LOADP   r64@0x00018, r64@0x00010
+        PADDI   r64@0x00018, r64@0x00018, 2
+        LOADP   r8@0x00020, r64@0x00018
+
+        ; argv[2]
+        PADDI   r64@0x00010, r64@0x00008, 16
+        LOADP   r64@0x00018, r64@0x00010
+        PADDI   r64@0x00018, r64@0x00018, 1
+        LOADP   r8@0x00021, r64@0x00018
+
+        END
+        JMP     loop