diff options
Diffstat (limited to 'bl31')
| -rw-r--r-- | bl31/runtime_svc.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/bl31/runtime_svc.c b/bl31/runtime_svc.c index f011f112..8729e292 100644 --- a/bl31/runtime_svc.c +++ b/bl31/runtime_svc.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: @@ -28,6 +28,7 @@ * POSSIBILITY OF SUCH DAMAGE. */ +#include <assert.h> #include <debug.h> #include <errno.h> #include <runtime_svc.h> @@ -42,11 +43,14 @@ * 'rt_svc_descs_indices' array. This gives the index of the descriptor in the * 'rt_svc_descs' array which contains the SMC handler. ******************************************************************************/ -#define RT_SVC_DESCS_START ((uint64_t) (&__RT_SVC_DESCS_START__)) -#define RT_SVC_DESCS_END ((uint64_t) (&__RT_SVC_DESCS_END__)) +#define RT_SVC_DESCS_START ((uintptr_t) (&__RT_SVC_DESCS_START__)) +#define RT_SVC_DESCS_END ((uintptr_t) (&__RT_SVC_DESCS_END__)) uint8_t rt_svc_descs_indices[MAX_RT_SVCS]; static rt_svc_desc_t *rt_svc_descs; +#define RT_SVC_DECS_NUM ((RT_SVC_DESCS_END - RT_SVC_DESCS_START)\ + / sizeof(rt_svc_desc_t)) + /******************************************************************************* * Simple routine to sanity check a runtime service descriptor before using it ******************************************************************************/ @@ -80,21 +84,20 @@ static int32_t validate_rt_svc_desc(rt_svc_desc_t *desc) ******************************************************************************/ void runtime_svc_init(void) { - int32_t rc = 0; - uint32_t index, start_idx, end_idx; - uint64_t rt_svc_descs_num; + int rc = 0, index, start_idx, end_idx; + + /* Assert the number of descriptors detected are less than maximum indices */ + assert((RT_SVC_DECS_NUM >= 0) && (RT_SVC_DECS_NUM < MAX_RT_SVCS)); /* If no runtime services are implemented then simply bail out */ - rt_svc_descs_num = RT_SVC_DESCS_END - RT_SVC_DESCS_START; - rt_svc_descs_num /= sizeof(rt_svc_desc_t); - if (rt_svc_descs_num == 0) + if (RT_SVC_DECS_NUM == 0) return; /* Initialise internal variables to invalid state */ memset(rt_svc_descs_indices, -1, sizeof(rt_svc_descs_indices)); rt_svc_descs = (rt_svc_desc_t *) RT_SVC_DESCS_START; - for (index = 0; index < rt_svc_descs_num; index++) { + for (index = 0; index < RT_SVC_DECS_NUM; index++) { /* * An invalid descriptor is an error condition since it is |