hvf: Makes assert_hvf_ok report failed expression

When a macOS Hypervisor.framework call fails which is checked by
assert_hvf_ok(), Qemu exits printing the error value, but not the
location
in the code, as regular assert() macro expansions would.

This change turns assert_hvf_ok() into a macro similar to other
assertions, which expands to a call to the corresponding _impl()
function together with information about the expression that failed
the assertion and its location in the code.

Additionally, stringifying the numeric hv_return_t code is factored
into a helper function that can be reused for diagnostics and debugging
outside of assertions.

Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-ID: <20240605112556.43193-8-phil@philjordan.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h
index 30e739a..5b28d17 100644
--- a/include/sysemu/hvf_int.h
+++ b/include/sysemu/hvf_int.h
@@ -60,7 +60,10 @@ struct AccelCPUState {
     bool dirty;
 };
 
-void assert_hvf_ok(hv_return_t ret);
+void assert_hvf_ok_impl(hv_return_t ret, const char *file, unsigned int line,
+                        const char *exp);
+#define assert_hvf_ok(EX) assert_hvf_ok_impl((EX), __FILE__, __LINE__, #EX)
+const char *hvf_return_string(hv_return_t ret);
 int hvf_arch_init(void);
 int hvf_arch_init_vcpu(CPUState *cpu);
 void hvf_arch_vcpu_destroy(CPUState *cpu);