83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "cpu.h"
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#include "exec/exec-all.h"
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#include "qemu/host-utils.h"
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#include "exec/helper-proto.h"
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static inline void init_prefetch_area(E2KAauAreaState *s, E2KAauPrefInstr pi,
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uint32_t *inds)
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{
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s->last_page = 0;
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if (pi.fmt != 0) {
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s->pi = pi;
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s->ldi = 0;
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s->cdi = inds[pi.ind];
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} else {
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s->pi.raw = 0;
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s->ldi = 0;
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s->cdi = 0;
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}
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}
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void HELPER(aau_load_program)(CPUE2KState *env)
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{
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unsigned int i;
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E2KCtpr ctpr = env->ctprs[1];
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if (ctpr.tag != CTPR_TAG_DISP || ctpr.opc != CTPR_OPC_LDISP) {
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helper_raise_exception(env, EXCP_ILLEGAL_OPCODE);
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}
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for (i = 0; i < 32; i++) {
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E2KAauPrefInstr l, r;
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size_t offset = i * 16;
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l.raw = cpu_ldq_le_data(env, ctpr.base + offset);
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r.raw = cpu_ldq_le_data(env, ctpr.base + offset + 8);
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init_prefetch_area(&env->aau.pl.area[i], l, env->aau.inds);
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init_prefetch_area(&env->aau.pr.area[i], r, env->aau.inds);
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if (l.ct || r.ct) {
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break;
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}
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}
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}
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target_ulong HELPER(mova_ptr)(CPUE2KState *env, int chan, int area, int ind,
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int size, int mmu_idx)
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{
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E2KAauPrefState *ps = chan < 2 ? &env->aau.pl : &env->aau.pr;
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E2KAauAreaState *as = &ps->area[area];
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E2KAauPrefInstr instr = as->pi;
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E2KAad aad = env->aau.ds[instr.aad];
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target_ulong ptr = aad.base + as->cdi + instr.disp + ind;
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target_ulong page = ptr & ~(TARGET_PAGE_SIZE - 1);
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if (as->last_page == 0 || page != as->last_page) {
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if (!helper_probe_read_access(env, ptr, size, mmu_idx)) {
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return 0;
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}
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as->last_page = page;
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}
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return ptr;
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}
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void HELPER(aau_am)(CPUE2KState *env, int chan, int area)
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{
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E2KAauPrefState *ps = chan < 2 ? &env->aau.pl : &env->aau.pr;
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E2KAauAreaState *as = &ps->area[area];
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E2KAauPrefInstr instr = as->pi;
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uint32_t incr = env->aau.incrs[instr.incr];
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int size;
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if (instr.fmt == 0) {
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return;
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}
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size = 1 << (instr.fmt - 1);
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as->cdi += size * incr;
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}
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