As per the spec: the PARAMETER REGISTER contains the address of a pointer to a four-field data block.
So we need to follow the pointer and place the results of SYS_HEAPINFO there. Bug: https://bugs.launchpad.net/bugs/1915925 Cc: Bug 1915925 <1915...@bugs.launchpad.net> Cc: Keith Packard <kei...@keithp.com> Signed-off-by: Alex Bennée <alex.ben...@linaro.org> --- semihosting/arm-compat-semi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c index 733eea1e2d..2ac9226d29 100644 --- a/semihosting/arm-compat-semi.c +++ b/semihosting/arm-compat-semi.c @@ -1210,6 +1210,8 @@ target_ulong do_common_semihosting(CPUState *cs) retvals[2] = rambase + limit; /* Stack base */ retvals[3] = rambase; /* Stack limit. */ #endif + /* The result array is pointed to by arg0 */ + args = arg0; for (i = 0; i < ARRAY_SIZE(retvals); i++) { bool fail; -- 2.20.1
