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ppcemu: Make flags atomic.

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For flags that might be accessed by other threads.
This commit is contained in:
joevt 2023-11-23 11:58:00 -08:00 committed by dingusdev
parent 4ef3c792de
commit 1d5502dc3c
2 changed files with 11 additions and 3 deletions
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6
cpu/ppc/ppcemu.h
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@ -1,6 +1,6 @@
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 divingkatae and maximum
Copyright (C) 2018-24 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
@ -298,7 +298,11 @@ enum Exc_Cause : uint32_t {
TRAP = 1 << (31 - 14),
};
#ifdef EXEC_FLAGS_ATOMIC
extern std::atomic<unsigned> exec_flags;
#else
extern unsigned exec_flags;
#endif
extern jmp_buf exc_env;

8
cpu/ppc/ppcexec.cpp
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@ -1,6 +1,6 @@
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
Copyright (C) 2018-24 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
@ -54,7 +54,11 @@ uint32_t ppc_cur_instruction; // Current instruction for the PPC
uint32_t ppc_effective_address;
uint32_t ppc_next_instruction_address; // Used for branching, setting up the NIA
unsigned exec_flags; // execution control flags
#ifdef EXEC_FLAGS_ATOMIC
std::atomic<unsigned> exec_flags{0}; // execution control flags
#else
unsigned exec_flags; // FIXME: read by main thread ppc_main_opcode; written by audio dbdma DMAChannel::update_irq .. add_immediate_timer
#endif
bool int_pin = false; // interrupt request pin state: true - asserted
bool dec_exception_pending = false;