lib: cpus: aarch32: sanity check pointers before use
This is the AARCH32 update of patch [1].
[1] 601e3ed209eb ("lib: cpus: sanity check pointers before use")
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I43dbe00a5802a7e1c6f877e22d1c66ec8275c6fa
diff --git a/lib/cpus/aarch32/cpu_helpers.S b/lib/cpus/aarch32/cpu_helpers.S
index 9b5d787..6ed800c 100644
--- a/lib/cpus/aarch32/cpu_helpers.S
+++ b/lib/cpus/aarch32/cpu_helpers.S
@@ -78,6 +78,10 @@
mov r1, #CPU_PWR_DWN_OPS
add r1, r1, r2, lsl #2
ldr r1, [r0, r1]
+#if ENABLE_ASSERTIONS
+ cmp r1, #0
+ ASM_ASSERT(ne)
+#endif
bx r1
endfunc prepare_cpu_pwr_dwn
@@ -146,6 +150,10 @@
/* Subtract the increment and offset to get the cpu-ops pointer */
sub r0, r4, #(CPU_OPS_SIZE + CPU_MIDR)
+#if ENABLE_ASSERTIONS
+ cmp r0, #0
+ ASM_ASSERT(ne)
+#endif
error_exit:
bx lr
endfunc get_cpu_ops_ptr
@@ -224,7 +232,15 @@
* function. If it's non-NULL, jump to the function in turn.
*/
bl _cpu_data
+#if ENABLE_ASSERTIONS
+ cmp r0, #0
+ ASM_ASSERT(ne)
+#endif
ldr r1, [r0, #CPU_DATA_CPU_OPS_PTR]
+#if ENABLE_ASSERTIONS
+ cmp r1, #0
+ ASM_ASSERT(ne)
+#endif
ldr r0, [r1, #CPU_ERRATA_FUNC]
cmp r0, #0
beq 1f