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[dynarmic] initial posix EH for rv64

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2026-03-29 06:02:22 +00:00
parent 9a3af3a6a3
commit 8fac720516
3 changed files with 24 additions and 1 deletions
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1
src/dynarmic/src/dynarmic/backend/exception_handler.h
View file

@ -43,6 +43,7 @@ struct FakeCall {
};
#elif defined(ARCHITECTURE_riscv64)
struct FakeCall {
u64 call_sepc;
};
#else
# error "Invalid architecture"

10
src/dynarmic/src/dynarmic/backend/exception_handler_posix.cpp
View file

@ -140,7 +140,15 @@ void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
}
fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
#elif defined(ARCHITECTURE_riscv64)
UNREACHABLE();
{
std::shared_lock guard(sig_handler->code_block_infos_mutex);
if (const auto iter = sig_handler->FindCodeBlockInfo(CTX_SEPC); iter != sig_handler->code_block_infos.end()) {
FakeCall fc = iter->second.cb(CTX_SEPC);
CTX_SEPC = fc.call_sepc;
return;
}
}
fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_SEPC);
#else
# error "Invalid architecture"
#endif

14
src/dynarmic/src/dynarmic/common/context.h
View file

@ -118,6 +118,20 @@
# else
# error "Unknown platform"
# endif
#elif defined(ARCHITECTURE_riscv64)
# if defined(__FreeBSD__)
# define CTX_SEPC (mctx.mc_gpregs.gp_sepc)
# define CTX_SP (mctx.mc_gpregs.gp_sp)
# elif defined(__linux__)
# define CTX_SEPC (mctx.__gregs[REG_PC])
# define CTX_SP (mctx.__gregs[REG_SP])
# elif defined(__NetBSD__)
# define CTX_SEPC (mctx.__gregs[_REG_PC])
# define CTX_SP (mctx.__gregs[_REG_SP])
# elif defined(__OpenBSD__)
# define CTX_SEPC (ucontext->sc_sepc)
# define CTX_SP (ucontext->sc_sp)
# endif
#else
# error "unimplemented"
#endif