root / target-arm / op_mem.h @ 4373f3ce
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/* ARM memory operations. */
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/* Swap T0 with memory at address T1. */
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/* ??? Is this exception safe? */
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#define MEM_SWP_OP(name, lname) \
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void OPPROTO glue(op_swp##name,MEMSUFFIX)(void) \ |
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{ \
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uint32_t tmp; \ |
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cpu_lock(); \ |
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tmp = glue(ld##lname,MEMSUFFIX)(T1); \ |
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glue(st##name,MEMSUFFIX)(T1, T0); \ |
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T0 = tmp; \ |
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cpu_unlock(); \ |
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FORCE_RET(); \ |
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} |
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MEM_SWP_OP(b, ub) |
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MEM_SWP_OP(l, l) |
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#undef MEM_SWP_OP
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/* Load-locked, store exclusive. */
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#define EXCLUSIVE_OP(suffix, ldsuffix) \
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void OPPROTO glue(op_ld##suffix##ex,MEMSUFFIX)(void) \ |
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{ \
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cpu_lock(); \ |
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helper_mark_exclusive(env, T1); \ |
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T0 = glue(ld##ldsuffix,MEMSUFFIX)(T1); \ |
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cpu_unlock(); \ |
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FORCE_RET(); \ |
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} \ |
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\ |
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void OPPROTO glue(op_st##suffix##ex,MEMSUFFIX)(void) \ |
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{ \
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int failed; \
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cpu_lock(); \ |
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failed = helper_test_exclusive(env, T1); \ |
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/* ??? Is it safe to hold the cpu lock over a store? */ \
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if (!failed) { \
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glue(st##suffix,MEMSUFFIX)(T1, T0); \ |
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} \ |
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T0 = failed; \ |
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cpu_unlock(); \ |
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FORCE_RET(); \ |
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} |
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EXCLUSIVE_OP(b, ub) |
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EXCLUSIVE_OP(w, uw) |
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EXCLUSIVE_OP(l, l) |
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#undef EXCLUSIVE_OP
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/* Load exclusive T0:T1 from address T1. */
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void OPPROTO glue(op_ldqex,MEMSUFFIX)(void) |
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{
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cpu_lock(); |
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helper_mark_exclusive(env, T1); |
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T0 = glue(ldl,MEMSUFFIX)(T1); |
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T1 = glue(ldl,MEMSUFFIX)((T1 + 4));
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cpu_unlock(); |
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FORCE_RET(); |
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} |
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/* Store exclusive T0:T2 to address T1. */
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void OPPROTO glue(op_stqex,MEMSUFFIX)(void) |
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{
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int failed;
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cpu_lock(); |
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failed = helper_test_exclusive(env, T1); |
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/* ??? Is it safe to hold the cpu lock over a store? */
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if (!failed) {
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glue(stl,MEMSUFFIX)(T1, T0); |
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glue(stl,MEMSUFFIX)((T1 + 4), T2);
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} |
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T0 = failed; |
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cpu_unlock(); |
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FORCE_RET(); |
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} |
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/* iwMMXt load/store. Address is in T1 */
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#define MMX_MEM_OP(name, ldname) \
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void OPPROTO glue(op_iwmmxt_ld##name,MEMSUFFIX)(void) \ |
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{ \
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M0 = glue(ld##ldname,MEMSUFFIX)(T1); \ |
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FORCE_RET(); \ |
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} \ |
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void OPPROTO glue(op_iwmmxt_st##name,MEMSUFFIX)(void) \ |
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{ \
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glue(st##name,MEMSUFFIX)(T1, M0); \ |
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FORCE_RET(); \ |
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} |
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MMX_MEM_OP(b, ub) |
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MMX_MEM_OP(w, uw) |
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MMX_MEM_OP(l, l) |
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MMX_MEM_OP(q, q) |
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#undef MMX_MEM_OP
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#undef MEMSUFFIX
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