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| author | Fabian Imhof <fabian.imhof@ost.ch> | 2025-05-04 10:51:12 +0000 |
|---|---|---|
| committer | Fabian Imhof <fabian.imhof@ost.ch> | 2025-05-04 10:51:12 +0000 |
| commit | 4d4e23116284f41329ea809e2bda86feea1b325c (patch) | |
| tree | fb3577e8b00311e6e9c1ebcbca8b93c2122603a4 /arch/x86_64/src/context_switching/main.cpp | |
| parent | 4b4ca98376cb4bdf97fd910b7e2ca78628b0a8ee (diff) | |
| download | teachos-4d4e23116284f41329ea809e2bda86feea1b325c.tar.xz teachos-4d4e23116284f41329ea809e2bda86feea1b325c.zip | |
fix returning from syscall
Diffstat (limited to 'arch/x86_64/src/context_switching/main.cpp')
| -rw-r--r-- | arch/x86_64/src/context_switching/main.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86_64/src/context_switching/main.cpp b/arch/x86_64/src/context_switching/main.cpp index 7fe159e..6c6ec1a 100644 --- a/arch/x86_64/src/context_switching/main.cpp +++ b/arch/x86_64/src/context_switching/main.cpp @@ -27,6 +27,7 @@ namespace teachos::arch::context_switching auto user_mode_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: @@ -38,7 +39,7 @@ namespace teachos::arch::context_switching // 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 - const char syscall_message[32] = "Successfully entered user mode!"; + const char syscall_message[68] = "Successfully entered user mode and wrote to VGA buffer via syscall!"; auto error = syscall::syscall(syscall::WRITE, {reinterpret_cast<uint64_t>(&syscall_message)}); if (!error) |