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Memory: Disable _mem_exec in phys() accesses when not using the 486+ interpreter or dynamic recompiler, and write protect support in preparation for the WD76C10 rewrite.

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OBattler
2024-02-02 05:25:40 +01:00
parent 0483b8ceec
commit 0a5d25fdde
4 changed files with 78 additions and 35 deletions
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13
src/cpu/cpu.c
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@@ -182,6 +182,7 @@ int cpu_16bitbus;
int cpu_64bitbus;
int cpu_cyrix_alignment;
int cpu_cpurst_on_sr;
int cpu_use_exec = 0;
int CPUID;
int is186;
@@ -1784,16 +1785,20 @@ cpu_set(void)
x87_concurrency = x87_concurrency_486;
}
cpu_use_exec = 0;
if (is386) {
#if defined(USE_DYNAREC) && !defined(USE_GDBSTUB)
if (cpu_use_dynarec)
if (cpu_use_dynarec) {
cpu_exec = exec386_dynarec;
else
cpu_use_exec = 1;
} else
#endif
/* Use exec386 for CPU_IBM486SLC because it can reach 100 MHz. */
if ((cpu_s->cpu_type == CPU_IBM486SLC) || (cpu_s->cpu_type > CPU_486DLC))
if ((cpu_s->cpu_type == CPU_IBM486SLC) || (cpu_s->cpu_type > CPU_486DLC)) {
cpu_exec = exec386;
else
cpu_use_exec = 1;
} else
cpu_exec = exec386_2386;
} else if (cpu_s->cpu_type >= CPU_286)
cpu_exec = exec386_2386;