Author: gonzo
Date: Thu Mar 22 17:36:53 2012
New Revision: 233316
URL: http://svn.freebsd.org/changeset/base/233316
Log:
Fix PMC syscall on 64-bit big endian systems.
Sycall argument is pointer to array of register_t values. Casting it to
pointer to structure with fields of size smaller then register_t we rely
on compiler-dependent memory layout of structure.
Tested on: mips64 and amd64 systems
Modified:
head/sys/sys/pmc.h
Modified: head/sys/sys/pmc.h
==============================================================================
--- head/sys/sys/pmc.h Thu Mar 22 17:04:49 2012 (r233315)
+++ head/sys/sys/pmc.h Thu Mar 22 17:36:53 2012 (r233316)
@@ -589,7 +589,7 @@ struct pmc_op_getmsr {
*/
struct pmc_syscall_args {
- uint32_t pmop_code; /* one of PMC_OP_* */
+ register_t pmop_code; /* one of PMC_OP_* */
void *pmop_data; /* syscall parameter */
};
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