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some code cleanups

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This commit is contained in:
Stefan Lankes 2015-07-17 20:52:15 +02:00
parent bffb6fc8af
commit 97eb56e95d
1 changed files with 1 additions and 5 deletions
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6
hermit/arch/x86/include/asm/tasks.h
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@ -71,11 +71,7 @@ int create_default_frame(task_t* task, entry_point_t ep, void* arg);
static inline int jump_to_user_code(size_t ep, size_t stack)
{
// Create a pseudo interrupt on the stack and return to user function
size_t ds = 0x23, cs = 0x2b;
// x86_64 doesn't longer use segment registers
//asm volatile ("mov %0, %%ds; mov %0, %%es" :: "r"(ds));
asm volatile ("push %0; push %1; push $0x1202; push %2; push %3; iretq" :: "r"(ds), "r"(stack), "r"(cs), "r"(ep));
asm volatile ("push %0; push %1; push $0x1202; push %2; push %3; iretq" :: "r"(0x23ULL), "r"(stack), "r"(0x2bULL), "r"(ep) : "memory");
return 0;
}