mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-06 13:00:15 +02:00
Ryan Houdek
27309114be
Noticed recently that `FEXServer -w` was broken and couldn't understand why. Turns out that FHU syscall handling was /always/ falling down the `#else` path in the handlers since cmake `add_definitions` follows folder scoping rules. This means it was always returning -1, which was causing FEXServer's pidfd_open usage to always receive -1, which meant the sendmsg with FD was always failing, which meant the `FEXServer -w` would forever wait for a message that was never sent. Converting the utility over to a target not only fixes definition scoping problems, but also makes the other paths actually work. This found some compiling bugs and instead lets us define SYS_pidfd_open if it doesn't exist. Letting the kernel return the ENOSYS if it doesn't exist on that platform. Main thing, fixes FEXServer -w hanging forever.
65 lines
1.4 KiB
CMake
65 lines
1.4 KiB
CMake
add_library(FEXHeaderUtils INTERFACE)
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# Check for syscall support here
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check_cxx_source_compiles(
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"
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#include <sched.h>
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int main() {
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return ::getcpu(nullptr, nullptr);
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}"
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compiles)
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if (compiles)
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message(STATUS "Has getcpu helper")
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target_compile_definitions(FEXHeaderUtils INTERFACE HAS_SYSCALL_GETCPU=1)
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endif ()
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check_cxx_source_compiles(
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"
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#include <unistd.h>
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int main() {
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return ::gettid();
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}"
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compiles)
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if (compiles)
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message(STATUS "Has gettid helper")
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target_compile_definitions(FEXHeaderUtils INTERFACE HAS_SYSCALL_GETTID=1)
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endif ()
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check_cxx_source_compiles(
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"
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#include <signal.h>
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int main() {
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return ::tgkill(0, 0, 0);
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}"
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compiles)
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if (compiles)
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message(STATUS "Has tgkill helper")
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target_compile_definitions(FEXHeaderUtils INTERFACE HAS_SYSCALL_TGKILL=1)
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endif ()
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check_cxx_source_compiles(
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"
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#include <sys/stat.h>
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int main() {
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return ::statx(0, nullptr, 0, 0, nullptr);
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}"
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compiles)
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if (compiles)
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message(STATUS "Has statx helper")
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target_compile_definitions(FEXHeaderUtils INTERFACE HAS_SYSCALL_STATX=1)
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endif ()
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check_cxx_source_compiles(
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"
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#include <stdio.h>
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int main() {
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return ::renameat2(0, nullptr, 0, nullptr, 0);
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}"
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compiles)
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if (compiles)
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message(STATUS "Has renameat2 helper")
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target_compile_definitions(FEXHeaderUtils INTERFACE HAS_SYSCALL_RENAMEAT2=1)
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endif ()
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target_include_directories(FEXHeaderUtils INTERFACE .)
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