The registers that are saved/restored in the trap / exception frame need to be consistent between all entry/exit points as well as the functions that convert between trap/exception frame and context. The trap frame contains only the non-volatile registers and rbp, the rest is saved in the exception frame.
The previous code didn't save rbp in the syscall handler, which led to it being clobbered when exiting though KiServiceExit2 rather than returning back to the syscall exit path. Also KeContextToTrapFrame would use rbx, rsi and rdi from the trap frame, which wouldn't be saved there by the syscall handler.
This also fixes delivering APCs from the system call handler, which previously would have clobbered rax. Also don't use the thread's TrapFrame member, which is not always set, when returning.
Co-authored-by: Victor Perevertkin <victor.perevertkin@reactos.org>
Introduce the initial changes needed to get other processors up and into kernel mode.
This only supports x86 as of now but is the first real step towards using other system processors.
In particular, for a given platform (x86, AMD64...) its definition
depends for uniprocessor vs. multiprocessor NT kernel/HAL (controlled
by the CONFIG_SMP define).
Regarding the ASM-generated headers (from asm/ksx.template.h), since
they are generated once for a given platform, and since UP/MP NT builds
are generated at the same time, these headers need to contain both
SYNCH_LEVEL definitions controlled by CONFIG_SMP, instead of a fixed
value. Therefore we need to employ the geninc RAW(...) construct.
[NDK:X86] Add missing x86 CLOCK1_LEVEL and POWER_LEVEL definitions.
- Do not allocate a new stack, if the thread already has a large one. This prevents the function from freeing a large stack as a normal stack and subsequently leaking system PTEs.
- Fix the check for failure of PsConvertToGuiThread (test eax, not rax, for being negative, because by default rax is zero extended from eax, not sign extended). This fixes an infinite loop on failure.
- Add some missing ARM64 exports to ntdll, kernel32 and user32
- Create mmtypes header file based on WoA debug symbols
- Get the remaining headers in order, so we can build ARM64 apps
- Adjust subsystem version for binaries so they can run on WoA host
- Get calc, notepad and more base apps to build for ARM64 platform
CORE-17518
Reviewed-by: Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
Reviewed-by: Stanislav Motylkov <x86corez@gmail.com>
KiSetTrapContext is an asm wrapper around RtlSetUnwindContext, which first stores an exception frame to assure that all non-volatile registers were put on the stack, then calls RtlSetUnwindContext to update their first saving positions on the stack and finally restore the exception frame to potentially load any updated registers, that haven't been saved elsewhere on the stack.
- Deliver pending APCs on trap exit
- Pass the trapframe of KiApcInterrupt to KiDeliverApcs, not NULL.
- Fix parameter passing from KiSwapContext to KiSwapContextInternal and KiSwapContextResume, so that the ApcBypass parameter is not uninitialized
- Fix return value of KiSwapContextResume to correctly indicate whether we want to have APCs directly delivered or not (when there are non, or when delivery is suppressed)
- Un-hardcode the RPL_MASK value.
- s/KiUnexpectedInterrupt&Number/KiUnexpectedInterrupt&Vector/
- Use C-style comments in traphdlr.c as everywhere else in the file.
- Update the URLs for the MSDN "FPO" macro documentation.
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
Modify the .code16 macro so that the 16-bit code segment can get a
chance to be correctly merged with other (possibly 32-bit) code
segments, without keeping generating multiple .text segments with
different attributes and generating the corresponding LNK4078 warning.
This fixes the warning when compiling NTOSKRNL on MSVC:
"v86.S.obj : warning LNK4078: multiple '.text' sections found with different attributes (C0520040)".
GAS uses ".double" symbol for declaring floating-point constants and
".quad" symbol for declaring 64-bit numbers.
This is not compatible with our macro for MASM and introduces bugs.
Now 64-bit constants are supposed to be declared using ".quad" macro.
