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target-alpha: Trap for unassigned and unaligned addresses.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-04-18 16:13:12 -07:00 committed by Richard Henderson
parent fa6e0a6354
commit 5b4504079a
4 changed files with 38 additions and 8 deletions
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2
exec-all.h
View file

@ -325,7 +325,7 @@ static inline tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong add
}
pd = env1->tlb_table[mmu_idx][page_index].addr_code & ~TARGET_PAGE_MASK;
if (pd > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) {
#if defined(TARGET_SPARC) || defined(TARGET_MIPS)
#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SPARC)
do_unassigned_access(addr, 0, 1, 0, 4);
#else
cpu_abort(env1, "Trying to execute code outside RAM or ROM at 0x" TARGET_FMT_lx "\n", addr);

12
exec.c
View file

@ -3181,7 +3181,7 @@ static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr)
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 0, 0, 0, 1);
#endif
return 0;
@ -3192,7 +3192,7 @@ static uint32_t unassigned_mem_readw(void *opaque, target_phys_addr_t addr)
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 0, 0, 0, 2);
#endif
return 0;
@ -3203,7 +3203,7 @@ static uint32_t unassigned_mem_readl(void *opaque, target_phys_addr_t addr)
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 0, 0, 0, 4);
#endif
return 0;
@ -3214,7 +3214,7 @@ static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 1, 0, 0, 1);
#endif
}
@ -3224,7 +3224,7 @@ static void unassigned_mem_writew(void *opaque, target_phys_addr_t addr, uint32_
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 1, 0, 0, 2);
#endif
}
@ -3234,7 +3234,7 @@ static void unassigned_mem_writel(void *opaque, target_phys_addr_t addr, uint32_
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
#endif
#if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
do_unassigned_access(addr, 1, 0, 0, 4);
#endif
}

6
target-alpha/cpu.h
View file

@ -434,7 +434,11 @@ void do_interrupt (CPUState *env);
uint64_t cpu_alpha_load_fpcr (CPUState *env);
void cpu_alpha_store_fpcr (CPUState *env, uint64_t val);
extern void swap_shadow_regs(CPUState *env);
#ifndef CONFIG_USER_ONLY
void swap_shadow_regs(CPUState *env);
extern QEMU_NORETURN void do_unassigned_access(target_phys_addr_t addr,
int, int, int, int);
#endif
/* Bits in TB->FLAGS that control how translation is processed. */
enum {

26
target-alpha/op_helper.c
View file

@ -1265,7 +1265,33 @@ uint64_t helper_stq_c_phys(uint64_t p, uint64_t v)
return ret;
}
static void QEMU_NORETURN do_unaligned_access(target_ulong addr, int is_write,
int is_user, void *retaddr)
{
uint64_t pc;
uint32_t insn;
do_restore_state(retaddr);
pc = env->pc;
insn = ldl_code(pc);
env->trap_arg0 = addr;
env->trap_arg1 = insn >> 26; /* opcode */
env->trap_arg2 = (insn >> 21) & 31; /* dest regno */
helper_excp(EXCP_UNALIGN, 0);
}
void QEMU_NORETURN do_unassigned_access(target_phys_addr_t addr, int is_write,
int is_exec, int unused, int size)
{
env->trap_arg0 = addr;
env->trap_arg1 = is_write;
dynamic_excp(EXCP_MCHK, 0);
}
#define MMUSUFFIX _mmu
#define ALIGNED_ONLY
#define SHIFT 0
#include "softmmu_template.h"