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authorMartin Storsjö <martin@martin.st>2016-09-30 12:06:49 +0300
committerMartin Storsjö <martin@martin.st>2016-10-16 23:26:33 +0300
commitc91d6a33f872574c95c8784277cf60ffcf6bff4f (patch)
tree82bbab8b7ab87ffa6af9616fad1c037a6275e84f /tests/checkasm/aarch64
parentf1b3e131385176c3c9d9783b25047856a0dcebf6 (diff)
downloadffmpeg-c91d6a33f872574c95c8784277cf60ffcf6bff4f.tar.gz
checkasm: aarch64: Add filler args to make sure all parameters are passed on the stack
This, combined with clobbering the stack space prior to the call, increases the chances of finding cases where 32 bit parameters are erroneously treated as 64 bit. Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'tests/checkasm/aarch64')
-rw-r--r--tests/checkasm/aarch64/checkasm.S16
1 files changed, 6 insertions, 10 deletions
diff --git a/tests/checkasm/aarch64/checkasm.S b/tests/checkasm/aarch64/checkasm.S
index c22204fa34..65b352104e 100644
--- a/tests/checkasm/aarch64/checkasm.S
+++ b/tests/checkasm/aarch64/checkasm.S
@@ -93,22 +93,18 @@ function checkasm_checked_call, export=1
sub sp, sp, #ARG_STACK
.equ pos, 0
-// the first stacked arg is copied to x7
.rept MAX_ARGS-8
- ldr x9, [x29, #16 + 8 + pos]
+ // Skip the first 8 args, that are loaded into registers
+ ldr x9, [x29, #16 + 8*8 + pos]
str x9, [sp, #pos]
.equ pos, pos + 8
.endr
mov x12, x0
- mov x0, x1
- mov x1, x2
- mov x2, x3
- mov x3, x4
- mov x4, x5
- mov x5, x6
- mov x6, x7
- ldr x7, [x29, #16]
+ ldp x0, x1, [x29, #16]
+ ldp x2, x3, [x29, #32]
+ ldp x4, x5, [x29, #48]
+ ldp x6, x7, [x29, #64]
blr x12
add sp, sp, #ARG_STACK
stp x0, x1, [sp, #-16]!