diff options
Diffstat (limited to 'os/common/ports/ARMCMx/compilers/GCC/crt0.c')
| -rw-r--r-- | os/common/ports/ARMCMx/compilers/GCC/crt0.c | 68 |
1 files changed, 44 insertions, 24 deletions
diff --git a/os/common/ports/ARMCMx/compilers/GCC/crt0.c b/os/common/ports/ARMCMx/compilers/GCC/crt0.c index 21b2c4d84..daa6a63aa 100644 --- a/os/common/ports/ARMCMx/compilers/GCC/crt0.c +++ b/os/common/ports/ARMCMx/compilers/GCC/crt0.c @@ -26,36 +26,40 @@ */
#include <stdint.h>
+#include <stdbool.h>
#if !defined(FALSE)
#define FALSE 0
#endif
#if !defined(TRUE)
-#define TRUE (!FALSE)
+#define TRUE 1
#endif
#define SCB_CPACR *((uint32_t *)0xE000ED88U)
#define SCB_FPCCR *((uint32_t *)0xE000EF34U)
#define SCB_FPDSCR *((uint32_t *)0xE000EF3CU)
-#define FPCCR_ASPEN (0x1U << 31)
-#define FPCCR_LSPEN (0x1U << 30)
+#define FPCCR_ASPEN (uint32_t)((uint32_t)0x1U << (uint32_t)31U)
+#define FPCCR_LSPEN (uint32_t)((uint32_t)0x1U << (uint32_t)30U)
typedef void (*funcp_t)(void);
typedef funcp_t * funcpp_t;
-#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
+#define SYMVAL(sym) (uint32_t)&(sym)
/*
* Area fill code, it is a macro because here functions cannot be called
* until stacks are initialized.
*/
-#define fill32(start, end, filler) { \
+#define fill32(start, end, filler) do { \
uint32_t *p1 = (start); \
uint32_t *p2 = (end); \
- while (p1 < p2) \
+ /*lint -save -e681 [2.1] Lint cannot see the scatter file symbols.*/ \
+ while (p1 < p2) { \
+ /*lint -restore*/ \
*p1++ = (filler); \
-}
+ } \
+} while (false)
/*===========================================================================*/
/**
@@ -223,7 +227,9 @@ extern void main(void); #if !defined(__DOXYGEN__)
__attribute__((weak))
#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __early_init(void) {}
+/*lint -restore*/
/**
* @brief Late initialization.
@@ -235,7 +241,9 @@ void __early_init(void) {} #if !defined(__DOXYGEN__)
__attribute__((weak))
#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __late_init(void) {}
+/*lint -restore*/
/**
* @brief Default @p main() function exit handler.
@@ -246,9 +254,12 @@ void __late_init(void) {} #if !defined(__DOXYGEN__)
__attribute__((noreturn, weak))
#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void _default_exit(void) {
- while (1)
- ;
+/*lint -restore*/
+
+ while (true) {
+ }
}
/**
@@ -257,63 +268,68 @@ void _default_exit(void) { #if !defined(__DOXYGEN__)
__attribute__((naked))
#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void Reset_Handler(void) {
+/*lint -restore*/
uint32_t psp, reg;
/* Process Stack initialization, it is allocated starting from the
symbol __process_stack_end__ and its lower limit is the symbol
__process_stack_base__.*/
- asm volatile ("cpsid i");
+ __asm volatile ("cpsid i");
psp = SYMVAL(__process_stack_end__);
- asm volatile ("msr PSP, %0" : : "r" (psp));
+ __asm volatile ("msr PSP, %0" : : "r" (psp));
-#if CORTEX_USE_FPU
+#if CORTEX_USE_FPU == TRUE
/* Initializing the FPU context save in lazy mode.*/
SCB_FPCCR = FPCCR_ASPEN | FPCCR_LSPEN;
/* CP10 and CP11 set to full access.*/
- SCB_CPACR |= 0x00F00000;
+ SCB_CPACR |= 0x00F00000U;
/* FPSCR and FPDSCR initially zero.*/
reg = 0;
- asm volatile ("vmsr FPSCR, %0" : : "r" (reg) : "memory");
+ __asm volatile ("vmsr FPSCR, %0" : : "r" (reg) : "memory");
SCB_FPDSCR = reg;
/* CPU mode initialization, enforced FPCA bit.*/
- reg = CRT0_CONTROL_INIT | 4;
+ reg = (uint32_t)CRT0_CONTROL_INIT | 4U;
#else
/* CPU mode initialization.*/
reg = CRT0_CONTROL_INIT;
#endif
- asm volatile ("msr CONTROL, %0" : : "r" (reg));
- asm volatile ("isb");
+ __asm volatile ("msr CONTROL, %0" : : "r" (reg));
+ __asm volatile ("isb");
/* Early initialization hook invocation.*/
__early_init();
-#if CRT0_INIT_STACKS
+#if CRT0_INIT_STACKS == TRUE
/* Main and Process stacks initialization.*/
fill32(&__main_stack_base__,
&__main_stack_end__,
- CRT0_STACKS_FILL_PATTERN);
+ (uint32_t)CRT0_STACKS_FILL_PATTERN);
fill32(&__process_stack_base__,
&__process_stack_end__,
- CRT0_STACKS_FILL_PATTERN);
+ (uint32_t)CRT0_STACKS_FILL_PATTERN);
#endif
-#if CRT0_INIT_DATA
+#if CRT0_INIT_DATA == TRUE
/* DATA segment initialization.*/
{
uint32_t *tp, *dp;
tp = &_textdata;
dp = &_data;
- while (dp < &_edata)
+ /*lint -save -e681 [2.1] Lint cannot see the scatter file symbols.*/
+ while (dp < &_edata) {
+ /*lint -restore*/
*dp++ = *tp++;
+ }
}
#endif
-#if CRT0_INIT_BSS
+#if CRT0_INIT_BSS == TRUE
/* BSS segment initialization.*/
fill32(&_bss_start, &_bss_end, 0);
#endif
@@ -325,7 +341,9 @@ void Reset_Handler(void) { /* Constructors invocation.*/
{
funcpp_t fpp = &__init_array_start;
+ /*lint -save -e681 [2.1] Lint cannot see the scatter file symbols.*/
while (fpp < &__init_array_end) {
+ /*lint -restore*/
(*fpp)();
fpp++;
}
@@ -335,11 +353,13 @@ void Reset_Handler(void) { /* Invoking application main() function.*/
main();
-#if CRT0_CALL_DESTRUCTORS
+#if CRT0_CALL_DESTRUCTORS == TRUE
/* Destructors invocation.*/
{
funcpp_t fpp = &__fini_array_start;
+ /*lint -save -e681 [2.1] Lint cannot see the scatter file symbols.*/
while (fpp < &__fini_array_end) {
+ /*lint -restore*/
(*fpp)();
fpp++;
}
|