62 lines
934 B
Text
62 lines
934 B
Text
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# Test LDR instructions with offsets misaligned by 1 byte.
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# mach(): all
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.macro invalid
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# This is "undefined" but it's not properly decoded yet.
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.word 0x07ffffff
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# This is stc which isn't recognized yet.
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stc 0,cr0,[r0]
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.endm
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.global _start
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_start:
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# Run some simple insns to confirm the engine is at least working.
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nop
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# Skip over output text.
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bl do_test
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pass:
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.asciz "pass\n"
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.p2align 2
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do_test:
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mov r4, r14
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bl continue
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word1:
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.word 0x5555
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continue:
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ldr r6, [r14, #1]
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ldr r7, word2
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cmp r6, r7
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# Failed.
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bne done
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output_next:
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# Output a character (in arm mode).
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mov r0,#3
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mov r1,r4
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swi #0x123456
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# Load next character, see if done.
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add r4,r4,#1
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sub r3,r3,r3
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ldrb r5,[r4,r3]
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teq r5,#0
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bne output_next
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done:
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mov r0,#0x18
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ldr r1,exit_code
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swi #0x123456
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# If that fails, try to die with an invalid insn.
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invalid
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exit_code:
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.word 0x20026
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.word 0xFFFFFFFF
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word2:
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.word 0x55000055
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.word 0xFFFFFFFF
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