diff options
Diffstat (limited to 'os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s')
| -rw-r--r-- | os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s b/os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s index 1d23a99f3..69bfaa59c 100644 --- a/os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s +++ b/os/rt/ports/ARMCMx/compilers/RVCT/chcoreasm_v7m.s @@ -67,8 +67,18 @@ _port_switch PROC #if CORTEX_USE_FPU
vpush {s16-s31}
#endif
- str sp, [r1, #CONTEXT_OFFSET]
+
+ str sp, [r1, #CONTEXT_OFFSET]
+#if (CORTEX_SIMPLIFIED_PRIORITY == FALSE) && \
+ ((CORTEX_MODEL == 3) || (CORTEX_MODEL == 4))
+ /* Workaround for ARM errata 752419, only applied if
+ condition exists for it to be triggered.*/
+ ldr r3, [r0, #CONTEXT_OFFSET]
+ mov sp, r3
+#else
ldr sp, [r0, #CONTEXT_OFFSET]
+#endif
+
#if CORTEX_USE_FPU
vpop {s16-s31}
#endif
|