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Diffstat (limited to 'arch/x86_64/src/user/main.cpp')
-rw-r--r--arch/x86_64/src/user/main.cpp12
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/x86_64/src/user/main.cpp b/arch/x86_64/src/user/main.cpp
index 1d56d2e..3ddcb32 100644
--- a/arch/x86_64/src/user/main.cpp
+++ b/arch/x86_64/src/user/main.cpp
@@ -10,18 +10,6 @@ namespace teachos::arch::user
[[gnu::section(".user_text")]]
auto main() -> void
{
- // TODO: Remove or replace this wall of text
- // RFLAGS is saved into R11, RIP of the next instruction into RCX
- // Required for SYSRETURN to know where to return too.
- // Additional state needs to be saved by calling convention:
-
- // Syscall Number: RAX, Return Value: RAX (0 indicating no error, and -1 indicating an error, use as a boolean)
- // Argument in this order (max 6. no argument on stack): RDI, RSI, RDX, R10, R8, R9
- // Not used registers: RBX, RSP, R12, R13, R14
-
- // Actual Source: https://man7.org/linux/man-pages/man2/syscall.2.html More cleare documentation:
- // https://sys.readthedocs.io/en/latest/doc/05_calling_system_calls.html
-
char constexpr syscall_message[] = "Successfully entered user mode and wrote to VGA buffer via syscall!";
auto const error = context_switching::syscall::syscall(context_switching::syscall::type::WRITE,
{reinterpret_cast<uint64_t>(&syscall_message)});