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| author | Benji Dial <benji@benjidial.net> | 2024-05-18 21:53:38 -0400 |
|---|---|---|
| committer | Benji Dial <benji@benjidial.net> | 2024-05-18 21:53:38 -0400 |
| commit | b1a912a8a6ff472a49b2e0a09cfd433adfc2cb24 (patch) | |
| tree | 5009d4415ba13e4baa37f3d0271852528130fd3b /kernel/syscall.asm | |
| parent | a8a80d326de9550b2a25b1255a2093ab43219ede (diff) | |
| download | hilbert-os-b1a912a8a6ff472a49b2e0a09cfd433adfc2cb24.tar.gz | |
reorganization, cross compiler
Diffstat (limited to 'kernel/syscall.asm')
| -rw-r--r-- | kernel/syscall.asm | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/kernel/syscall.asm b/kernel/syscall.asm deleted file mode 100644 index c293402..0000000 --- a/kernel/syscall.asm +++ /dev/null @@ -1,88 +0,0 @@ -bits 64 - -global start_user_mode - -section .text - -extern do_syscall - -syscall_entry: - mov r11, rsp - mov rsp, 0xfffffffffffff000 - push r11 - push rcx - - push rdx - push rsi - push rdi - push rax - - mov rdi, rsp - lea rsi, [rsp + 8] - lea rdx, [rsp + 16] - lea rcx, [rsp + 24] - - call do_syscall - - pop rax - pop rdi - pop rsi - pop rdx - - xor r8, r8 - xor r9, r9 - xor r10, r10 - xor r11, r11 - or r11, 0x200 - pop rcx - pop rsp - - o64 sysret - -start_user_mode: -;intended rip in rdi -;intended rsp in rsi -;intended p4_paddr in rdx - - mov rax, rdx - mov cr3, rax - - ;efer <- efer | 0x1 - mov rcx, 0xc0000080 - rdmsr - or al, 1 - wrmsr - - ;lstar <- syscall_entry - mov rdx, syscall_entry - mov eax, edx - shr rdx, 32 - mov ecx, 0xc0000082 - wrmsr - - ;star <- 0x0030.0028.0000.0000 - mov edx, 0x00300028 - xor eax, eax - mov ecx, 0xc0000081 - wrmsr - - mov rcx, rdi - mov rsp, rsi - xor r11, r11 - or r11, 0x200 - - xor rax, rax - xor rbx, rbx - xor rdx, rdx - xor rdi, rdi - xor rsi, rsi - xor rbp, rbp - xor r8, r8 - xor r9, r9 - xor r10, r10 - xor r12, r12 - xor r13, r13 - xor r14, r14 - xor r15, r15 - - o64 sysret |