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aarch64: Actually reset kernel stack on exec

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This commit is contained in:
K. Lange 2022-02-07 12:46:13 +09:00
parent 82090737dd
commit 1ed8ba466c
1 changed files with 3 additions and 1 deletions
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4
kernel/arch/aarch64/arch.c
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@ -37,9 +37,11 @@ void arch_enter_user(uintptr_t entrypoint, int argc, char * argv[], char * envp[
register uint64_t x0 __asm__("x0") = argc;
register uint64_t x1 __asm__("x1") = (uintptr_t)argv;
register uint64_t x2 __asm__("x2") = (uintptr_t)envp;
register uint64_t x4 __asm__("x4") = (uintptr_t)this_core->sp_el1;
asm volatile(
"eret" :: "r"(x0), "r"(x1), "r"(x2));
"mov sp, x4\n"
"eret" :: "r"(x0), "r"(x1), "r"(x2), "r"(x4));
__builtin_unreachable();
}