qemu/mcu/rv32: Fix test of mcause value in lookup_cause.

Plaque FCC · dpgeorge · commit 324871f3803a · 2024-10-22T14:52:01.000+11:00
Signed-off-by: Plaque FCC &lt;plaque-fcc@github&gt;
diff --git a/ports/qemu/mcu/rv32/interrupts.c b/ports/qemu/mcu/rv32/interrupts.c
@@ -144,7 +144,7 @@ const char *lookup_cause(uint32_t mcause) {
             case 11:
                 return exception_causes[6];
             default:
-                return (mcause >= 16) ?
+                return ((mcause & 0x7FFFFFFF) >= 16) ?
                        exception_causes[7] :
                        exception_causes[0];
         }

Original file line number	Diff line number	Diff line change
`@@ -144,7 +144,7 @@ const char *lookup_cause(uint32_t mcause) {`
`144`	`144`	`case 11:`
`145`	`145`	`return exception_causes[6];`
`146`	`146`	`default:`
`147`		`- return (mcause >= 16) ?`
	`147`	`+ return ((mcause & 0x7FFFFFFF) >= 16) ?`
`148`	`148`	`exception_causes[7] :`
`149`	`149`	`exception_causes[0];`
`150`	`150`	`}`