arduino/esp8266
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Implement static initialization guards (#500)

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This commit is contained in:
Ivan Grokhotkov 2016-02-06 02:01:51 +03:00
parent b5684b4641
commit 6fc141772c
1 changed files with 31 additions and 0 deletions
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31
cores/esp8266/abi.cpp
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@ -25,7 +25,10 @@ extern "C" {
#include "osapi.h"
#include "mem.h"
}
#include <Arduino.h>
#include <cxxabi.h>
using __cxxabiv1::__guard;
void *operator new(size_t size) {
size = ((size + 3) & ~((size_t)0x3));
@ -56,6 +59,34 @@ void __cxa_deleted_virtual(void) {
panic();
}
typedef struct {
uint8_t guard;
uint8_t ps;
} guard_t;
extern "C" int __cxa_guard_acquire(__guard* pg)
{
uint8_t ps = xt_rsil(15);
if (reinterpret_cast<guard_t*>(pg)->guard) {
xt_wsr_ps(ps);
return 0;
}
reinterpret_cast<guard_t*>(pg)->ps = ps;
return 1;
}
extern "C" void __cxa_guard_release(__guard* pg)
{
reinterpret_cast<guard_t*>(pg)->guard = 1;
xt_wsr_ps(reinterpret_cast<guard_t*>(pg)->ps);
}
extern "C" void __cxa_guard_abort(__guard* pg)
{
xt_wsr_ps(reinterpret_cast<guard_t*>(pg)->ps);
}
namespace std {
void __throw_bad_function_call() {
panic();