diff options
| author | Jon Santmyer <jon@jonsantmyer.com> | 2024-05-22 13:00:41 -0400 |
|---|---|---|
| committer | Jon Santmyer <jon@jonsantmyer.com> | 2024-05-22 13:00:41 -0400 |
| commit | ace65b453151845bc361f21f3e5b651c35f9f126 (patch) | |
| tree | 262ebd29b0ca1d8584f0b6f1efa7a00d9f4f3e43 /arch/x86_64/umode_enter.c | |
| parent | f004c1ade8d617a82cea2fe249434cccb47a2358 (diff) | |
| download | jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.tar.gz jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.tar.bz2 jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.zip | |
Diffstat (limited to 'arch/x86_64/umode_enter.c')
| -rw-r--r-- | arch/x86_64/umode_enter.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86_64/umode_enter.c b/arch/x86_64/umode_enter.c new file mode 100644 index 0000000..3c7fa18 --- /dev/null +++ b/arch/x86_64/umode_enter.c @@ -0,0 +1,17 @@ +#include "tasking.h" + +__attribute__((noreturn)) +void +umode_enter(void *ip, void *sp) +{ + __asm__ volatile("mov %0, %%rsp; \ + push %%rcx; \ + mov %1, %%rcx; \ + mov $0x202, %%r11; \ + cli; \ + swapgs; \ + sysretq":: + "r"(sp), "r"(ip): + "memory"); + for(;;); +} |