diff options
Diffstat (limited to 'portable/IAR/ARM_CM0/portasm.s')
| -rw-r--r-- | portable/IAR/ARM_CM0/portasm.s | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/portable/IAR/ARM_CM0/portasm.s b/portable/IAR/ARM_CM0/portasm.s index 768ce41cb..ede492135 100644 --- a/portable/IAR/ARM_CM0/portasm.s +++ b/portable/IAR/ARM_CM0/portasm.s @@ -91,15 +91,15 @@ xPortPendSVHandler: vPortSVCHandler; /* This function is no longer used, but retained for backward - compatibility. */ + * compatibility. */ bx lr /*-----------------------------------------------------------*/ vPortStartFirstTask - /* The MSP stack is not reset as, unlike on M3/4 parts, there is no vector - table offset register that can be used to locate the initial stack value. - Not all M0 parts have the application vector table at address 0. */ + /* Don't reset the MSP stack as is done on CM3/4 devices. The vector table + * in some CM0 devices cannot be modified and thus may not hold the + * application's initial MSP value. */ ldr r3, =pxCurrentTCB /* Obtain location of pxCurrentTCB. */ ldr r1, [r3] |