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Verify that bpf2bpf updates r10 #245

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Verify that bpf2bpf updates r10 #245

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2a32754
Verify that bpf2bpf updates r10
May 10, 2024
34dffe2
Align stack access and fix sign extend issues
May 10, 2024
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15 changes: 15 additions & 0 deletions tests/call_local.data
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Original file line number Diff line number Diff line change
Expand Up @@ -13,15 +13,27 @@ mov %r6, 6
mov %r7, 7
mov %r8, 8
mov %r9, 9
# Write to the stack to make sure it's preserved.
stdw [%r10-8], 0x44332211
stdw [%r10-16], 0x88776655
call local func1
# %r0 contains the return value
# %r0 should contain 1 + 2 + 3 + 4 + 5
# Write to the stack to make sure it's preserved.
jne %r0, 15, failed
# %r6 through %r9 should be preserved
jne %r6, 6, failed
jne %r7, 7, failed
jne %r8, 8, failed
jne %r9, 9, failed
# Read back values from stack.
# Check that the values were not overwritten by func1.
ldxw %r6, [%r10-8]
mov32 %r0, 0x44332211
jne %r6, %r0, failed
ldxw %r7, [%r10-16]
mov32 %r0, 0x88776655
jne %r7, %r0, failed
# Success
mov %r0, 1
exit
Expand All @@ -36,6 +48,9 @@ add %r0, %r2
add %r0, %r3
add %r0, %r4
add %r0, %r5
# Write to the stack, shouldn't overwrite the callee's values.
stdw [%r10-8], 0xCCBBAA99
stdw [%r10-16], 0x00FFEEDD
mov %r6, 0
mov %r7, 0
mov %r8, 0
Expand Down