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[PULL,09/34] target/arm: fix handling of HLT semihosting in system mode

Message ID 20230105164417.3994639-10-peter.maydell@linaro.org
State Accepted
Commit 9788d4c007cbde7cda1b7a577b8b836335eb2b73
Headers show
Series [PULL,01/34] target/arm:Set lg_page_size to 0 if either S1 or S2 asks for it | expand

Commit Message

Peter Maydell Jan. 5, 2023, 4:43 p.m. UTC 
From: Alex Bennée <alex.bennee@linaro.org>

The check semihosting_enabled() wants to know if the guest is
currently in user mode. Unlike the other cases the test was inverted
causing us to block semihosting calls in non-EL0 modes.

Cc: qemu-stable@nongnu.org
Fixes: 19b26317e9 (target/arm: Honour -semihosting-config userspace=on)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target/arm/translate.c b/target/arm/translate.c
index 74a903072fe..1dcaefb8e75 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -1184,7 +1184,7 @@  static inline void gen_hlt(DisasContext *s, int imm)
      * semihosting, to provide some semblance of security
      * (and for consistency with our 32-bit semihosting).
      */
-    if (semihosting_enabled(s->current_el != 0) &&
+    if (semihosting_enabled(s->current_el == 0) &&
         (imm == (s->thumb ? 0x3c : 0xf000))) {
         gen_exception_internal_insn(s, EXCP_SEMIHOST);
         return;