As per the spec:
the PARAMETER REGISTER contains the address of a pointer to a
four-field data block.
So we need to follow arg0 and place the results of SYS_HEAPINFO there.
Fixes: 3c37cfe0b1 ("semihosting: Change internal common-semi interfaces to use
CPUState *")
Signed-off-by: Alex Bennée <[email protected]>
Reviewed-by: Peter Maydell <[email protected]>
Cc: Bug 1915925 <[email protected]>
Cc: Keith Packard <[email protected]>
Bug: https://bugs.launchpad.net/bugs/1915925
Message-Id: <[email protected]>
diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c
index 0f0e129a7c..fe079ca93a 100644
--- a/semihosting/arm-compat-semi.c
+++ b/semihosting/arm-compat-semi.c
@@ -1214,7 +1214,11 @@ target_ulong do_common_semihosting(CPUState *cs)
for (i = 0; i < ARRAY_SIZE(retvals); i++) {
bool fail;
- fail = SET_ARG(i, retvals[i]);
+ if (is_64bit_semihosting(env)) {
+ fail = put_user_u64(retvals[i], arg0 + i * 8);
+ } else {
+ fail = put_user_u32(retvals[i], arg0 + i * 4);
+ }
if (fail) {
/* Couldn't write back to argument block */
--
2.20.1
