diff options
author | Alexis211 <alexis211@gmail.com> | 2010-02-06 20:51:56 +0100 |
---|---|---|
committer | Alexis211 <alexis211@gmail.com> | 2010-02-06 20:51:56 +0100 |
commit | 6a52d123672b7a00af6e22b4c138205be2042a94 (patch) | |
tree | cd9b0a13490159369a66c850850596fd4b418139 /src/kernel/core/sys.c | |
parent | 3558f18daf50281ee1cd68cca96cd967dbac04ba (diff) | |
download | TCE-6a52d123672b7a00af6e22b4c138205be2042a94.tar.gz TCE-6a52d123672b7a00af6e22b4c138205be2042a94.zip |
Reorganisation
Diffstat (limited to 'src/kernel/core/sys.c')
-rw-r--r-- | src/kernel/core/sys.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/kernel/core/sys.c b/src/kernel/core/sys.c new file mode 100644 index 0000000..d31c20e --- /dev/null +++ b/src/kernel/core/sys.c @@ -0,0 +1,41 @@ +#include "sys.h" +#include "monitor.h" + +void outb(uint16_t port, uint8_t value) { + asm volatile("outb %1, %0" : : "dN"(port), "a"(value)); +} + +void outw(uint16_t port, uint16_t value) { + asm volatile("outw %1, %0" : : "dN"(port), "a"(value)); +} + +uint8_t inb(uint16_t port) { + uint8_t ret; + asm volatile("inb %1, %0" : "=a"(ret) : "dN"(port)); + return ret; +} + +uint16_t inw(uint16_t port) { + uint16_t ret; + asm volatile("inw %1, %0" : "=a"(ret) : "dN"(port)); + return ret; +} + +void panic(char* message, char* file, int line) { + monitor_write("\n>> PANIC: >>"); + monitor_write(message); monitor_write("<< in file "); monitor_write(file); + monitor_write("\nSystem halted T_T"); + asm volatile("cli; hlt"); +} + +static uint32_t if_locks = 1; + +void cli() { + asm volatile("cli"); + if_locks++; +} + +void sti() { + if (if_locks > 0) if_locks--; + if (if_locks == 0) asm volatile("sti"); +} |