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m68k/ColdFire system emulation.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2851 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-05-23 19:58:11 +00:00
parent 9daea9067a
commit 0633879f1a
19 changed files with 1548 additions and 207 deletions
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64
target-m68k/helper.c
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@ -1,7 +1,7 @@
/*
* m68k op helpers
*
* Copyright (c) 2006 CodeSourcery
* Copyright (c) 2006-2007 CodeSourcery
* Written by Paul Brook
*
* This library is free software; you can redistribute it and/or
@ -147,3 +147,65 @@ float64 helper_sub_cmpf64(CPUM68KState *env, float64 src0, float64 src1)
}
return res;
}
void helper_movec(CPUM68KState *env, int reg, uint32_t val)
{
switch (reg) {
case 0x02: /* CACR */
/* Ignored. */
break;
case 0x801: /* VBR */
env->vbr = val;
break;
/* TODO: Implement control registers. */
default:
cpu_abort(env, "Unimplemented control register write 0x%x = 0x%x\n",
reg, val);
}
}
/* MMU */
/* TODO: This will need fixing once the MMU is implemented. */
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
{
return addr;
}
#if defined(CONFIG_USER_ONLY)
int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
int is_user, int is_softmmu)
{
env->exception_index = EXCP_ACCESS;
env->mmu.ar = address;
return 1;
}
#else
int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
int is_user, int is_softmmu)
{
int prot;
address &= TARGET_PAGE_MASK;
prot = PAGE_READ | PAGE_WRITE;
return tlb_set_page(env, address, address, prot, is_user, is_softmmu);
}
/* Notify CPU of a pending interrupt. Prioritization and vectoring should
be handled by the interrupt controller. Real hardware only requests
the vector when the interrupt is acknowledged by the CPU. For
simplicitly we calculate it when the interrupt is signalled. */
void m68k_set_irq_level(CPUM68KState *env, int level, uint8_t vector)
{
env->pending_level = level;
env->pending_vector = vector;
if (level)
cpu_interrupt(env, CPU_INTERRUPT_HARD);
else
cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
}
#endif