stv0g/metalsvm
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

redesign of nested if flag handling

Browse source 
=> only clearing and setting of the IF flag
This commit is contained in:
Stefan Lankes 2011-04-08 15:56:09 +02:00
parent 4d14ec6aa7
commit 8868900e19
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
arch/x86/include/asm/irqflags.h
View file

@ -31,7 +31,9 @@ inline static void irq_disable(void) {
inline static uint32_t irq_nested_disable(void) {
uint32_t flags;
asm volatile("pushf; cli; popl %0": "=r"(flags) : : "memory");
return flags;
if (flags & (1 << 9))
return 1;
return 0;
}
inline static void irq_enable(void) {
@ -39,7 +41,8 @@ inline static void irq_enable(void) {
}
inline static void irq_nested_enable(uint32_t flags) {
asm volatile("pushl %0; popf" : : "r"(flags) : "memory");
if (flags)
irq_enable();
}
#ifdef __cplusplus