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/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: cpu_dyntrans.c,v 1.41 2005/11/23 22:03:31 debug Exp $ |
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* |
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* Common dyntrans routines. Included from cpu_*.c. |
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*/ |
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|
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|
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#ifdef DYNTRANS_CPU_RUN_INSTR |
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static void gather_statistics(struct cpu *cpu) |
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{ |
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uint64_t a; |
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int low_pc = ((size_t)cpu->cd.DYNTRANS_ARCH.next_ic - (size_t) |
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cpu->cd.DYNTRANS_ARCH.cur_ic_page) / sizeof(struct DYNTRANS_IC); |
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if (low_pc < 0 || low_pc >= DYNTRANS_IC_ENTRIES_PER_PAGE) |
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return; |
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|
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#if 0 |
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/* Use the physical address: */ |
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cpu->cd.DYNTRANS_ARCH.cur_physpage = (void *) |
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cpu->cd.DYNTRANS_ARCH.cur_ic_page; |
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a = cpu->cd.DYNTRANS_ARCH.cur_physpage->physaddr; |
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#else |
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/* Use the PC (virtual address): */ |
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a = cpu->pc; |
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#endif |
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|
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a &= ~((DYNTRANS_IC_ENTRIES_PER_PAGE-1) << |
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DYNTRANS_INSTR_ALIGNMENT_SHIFT); |
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a += low_pc << DYNTRANS_INSTR_ALIGNMENT_SHIFT; |
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|
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/* |
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* TODO: Everything below this line should be cleaned up :-) |
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*/ |
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a &= 0x03ffffff; |
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{ |
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static long long *array = NULL; |
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static char *array_16kpage_in_use = NULL; |
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static int n = 0; |
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a >>= DYNTRANS_INSTR_ALIGNMENT_SHIFT; |
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if (array == NULL) |
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array = zeroed_alloc(sizeof(long long) * 16384*1024); |
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if (array_16kpage_in_use == NULL) |
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array_16kpage_in_use = zeroed_alloc(sizeof(char) * 1024); |
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a &= (16384*1024-1); |
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array[a] ++; |
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array_16kpage_in_use[a / 16384] = 1; |
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n++; |
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if ((n & 0x3fffffff) == 0) { |
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FILE *f = fopen("statistics.out", "w"); |
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int i, j; |
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printf("Saving statistics... "); fflush(stdout); |
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for (i=0; i<1024; i++) |
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if (array_16kpage_in_use[i]) { |
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for (j=0; j<16384; j++) |
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if (array[i*16384 + j] > 0) |
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fprintf(f, "%lli\t0x%016llx\n", |
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(long long)array[i*16384+j], |
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(long long)((i*16384+j) << |
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DYNTRANS_INSTR_ALIGNMENT_SHIFT)); |
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} |
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fclose(f); |
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printf("n=0x%08x\n", n); |
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} |
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} |
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} |
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|
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|
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#define S gather_statistics(cpu) |
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|
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#ifdef DYNTRANS_VARIABLE_INSTRUCTION_LENGTH |
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#define I ic = cpu->cd.DYNTRANS_ARCH.next_ic; \ |
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cpu->cd.DYNTRANS_ARCH.next_ic += ic->len; \ |
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ic->f(cpu, ic); |
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#else |
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#define I ic = cpu->cd.DYNTRANS_ARCH.next_ic ++; ic->f(cpu, ic); |
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#endif |
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|
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|
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/* |
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* XXX_cpu_run_instr(): |
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* |
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* Execute one or more instructions on a specific CPU, using dyntrans. |
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* |
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* Return value is the number of instructions executed during this call, |
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* 0 if no instructions were executed. |
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*/ |
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int DYNTRANS_CPU_RUN_INSTR(struct emul *emul, struct cpu *cpu) |
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{ |
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#ifdef MODE32 |
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uint32_t cached_pc; |
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#else |
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uint64_t cached_pc; |
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#endif |
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int low_pc, n_instrs; |
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|
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#ifdef DYNTRANS_DUALMODE_32 |
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if (cpu->is_32bit) |
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DYNTRANS_PC_TO_POINTERS32(cpu); |
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else |
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#endif |
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DYNTRANS_PC_TO_POINTERS(cpu); |
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|
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/* |
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* Interrupt assertion? (This is _below_ the initial PC to pointer |
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* conversion; if the conversion caused an exception of some kind |
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* then interrupts are probably disabled, and the exception will get |
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* priority over device interrupts.) |
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*/ |
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#ifdef DYNTRANS_ARM |
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if (cpu->cd.arm.irq_asserted && !(cpu->cd.arm.cpsr & ARM_FLAG_I)) |
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arm_exception(cpu, ARM_EXCEPTION_IRQ); |
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#endif |
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#ifdef DYNTRANS_PPC |
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if (cpu->cd.ppc.dec_intr_pending && cpu->cd.ppc.msr & PPC_MSR_EE) { |
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ppc_exception(cpu, PPC_EXCEPTION_DEC); |
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cpu->cd.ppc.dec_intr_pending = 0; |
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} |
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if (cpu->cd.ppc.irq_asserted && cpu->cd.ppc.msr & PPC_MSR_EE) |
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ppc_exception(cpu, PPC_EXCEPTION_EI); |
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#endif |
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|
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cached_pc = cpu->pc; |
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|
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cpu->n_translated_instrs = 0; |
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cpu->running_translated = 1; |
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|
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cpu->cd.DYNTRANS_ARCH.cur_physpage = (void *) |
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cpu->cd.DYNTRANS_ARCH.cur_ic_page; |
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|
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if (single_step || cpu->machine->instruction_trace) { |
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/* |
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* Single-step: |
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*/ |
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struct DYNTRANS_IC *ic = cpu->cd.DYNTRANS_ARCH.next_ic |
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#ifndef DYNTRANS_VARIABLE_INSTRUCTION_LENGTH |
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++ |
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#endif |
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; |
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if (cpu->machine->instruction_trace) { |
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#ifdef DYNTRANS_X86 |
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unsigned char instr[17]; |
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cpu->cd.x86.cursegment = X86_S_CS; |
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cpu->cd.x86.seg_override = 0; |
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#else |
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#ifdef DYNTRANS_M68K |
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unsigned char instr[16]; /* TODO: 16? */ |
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#else |
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unsigned char instr[4]; /* General case... */ |
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#endif |
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#endif |
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if (!cpu->memory_rw(cpu, cpu->mem, cached_pc, &instr[0], |
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sizeof(instr), MEM_READ, CACHE_INSTRUCTION)) { |
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fatal("XXX_cpu_run_instr(): could not read " |
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"the instruction\n"); |
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} else |
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cpu_disassemble_instr(cpu->machine, cpu, |
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instr, 1, 0, 0); |
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} |
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|
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/* When single-stepping, multiple instruction calls cannot |
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be combined into one. This clears all translations: */ |
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if (cpu->cd.DYNTRANS_ARCH.cur_physpage->flags & COMBINATIONS) { |
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int i; |
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for (i=0; i<DYNTRANS_IC_ENTRIES_PER_PAGE; i++) |
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cpu->cd.DYNTRANS_ARCH.cur_physpage->ics[i].f = |
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#ifdef DYNTRANS_DUALMODE_32 |
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cpu->is_32bit? |
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instr32(to_be_translated) : |
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#endif |
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instr(to_be_translated); |
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fatal("[ Note: The translation of physical page 0x%llx" |
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" contained combinations of instructions; these " |
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"are now flushed because we are single-stepping." |
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" ]\n", (long long)cpu->cd.DYNTRANS_ARCH. |
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cur_physpage->physaddr); |
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cpu->cd.DYNTRANS_ARCH.cur_physpage->flags &= |
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~(COMBINATIONS | TRANSLATIONS); |
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} |
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|
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if (show_opcode_statistics) |
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S; |
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|
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/* Execute just one instruction: */ |
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ic->f(cpu, ic); |
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n_instrs = 1; |
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} else if (show_opcode_statistics) { |
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/* Gather statistics while executing multiple instructions: */ |
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n_instrs = 0; |
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for (;;) { |
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struct DYNTRANS_IC *ic; |
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|
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S; I; S; I; S; I; S; I; S; I; S; I; |
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S; I; S; I; S; I; S; I; S; I; S; I; |
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S; I; S; I; S; I; S; I; S; I; S; I; |
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S; I; S; I; S; I; S; I; S; I; S; I; |
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|
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n_instrs += 24; |
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|
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if (!cpu->running_translated || |
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n_instrs + cpu->n_translated_instrs >= 16384) |
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break; |
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} |
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} else { |
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/* Execute multiple instructions: */ |
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n_instrs = 0; |
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for (;;) { |
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struct DYNTRANS_IC *ic; |
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|
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I; I; I; I; I; I; I; I; I; I; |
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I; I; I; I; I; I; I; I; I; I; |
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I; I; I; I; I; I; I; I; I; I; |
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I; I; I; I; I; I; I; I; I; I; |
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I; I; I; I; I; I; I; I; I; I; |
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|
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I; I; I; I; I; I; I; I; I; I; |
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|
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n_instrs += 60; |
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|
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if (!cpu->running_translated || |
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n_instrs + cpu->n_translated_instrs >= 16384) |
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break; |
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} |
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} |
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|
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n_instrs += cpu->n_translated_instrs; |
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|
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/* Synchronize the program counter: */ |
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low_pc = ((size_t)cpu->cd.DYNTRANS_ARCH.next_ic - (size_t) |
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cpu->cd.DYNTRANS_ARCH.cur_ic_page) / sizeof(struct DYNTRANS_IC); |
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if (low_pc >= 0 && low_pc < DYNTRANS_IC_ENTRIES_PER_PAGE) { |
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cpu->pc &= ~((DYNTRANS_IC_ENTRIES_PER_PAGE-1) << |
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DYNTRANS_INSTR_ALIGNMENT_SHIFT); |
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cpu->pc += (low_pc << DYNTRANS_INSTR_ALIGNMENT_SHIFT); |
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} else if (low_pc == DYNTRANS_IC_ENTRIES_PER_PAGE) { |
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/* Switch to next page: */ |
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cpu->pc &= ~((DYNTRANS_IC_ENTRIES_PER_PAGE-1) << |
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DYNTRANS_INSTR_ALIGNMENT_SHIFT); |
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cpu->pc += (DYNTRANS_IC_ENTRIES_PER_PAGE << |
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DYNTRANS_INSTR_ALIGNMENT_SHIFT); |
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} |
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|
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#ifdef DYNTRANS_PPC |
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/* Update the Decrementer and Time base registers: */ |
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{ |
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uint32_t old = cpu->cd.ppc.spr[SPR_DEC]; |
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cpu->cd.ppc.spr[SPR_DEC] = (uint32_t) (old - n_instrs); |
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if ((old >> 31) == 0 && (cpu->cd.ppc.spr[SPR_DEC] >> 31) == 1) |
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cpu->cd.ppc.dec_intr_pending = 1; |
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|
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old = cpu->cd.ppc.spr[SPR_TBL]; |
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cpu->cd.ppc.spr[SPR_TBL] += n_instrs; |
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if ((old >> 31) == 1 && (cpu->cd.ppc.spr[SPR_TBL] >> 31) == 0) |
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cpu->cd.ppc.spr[SPR_TBU] ++; |
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} |
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#endif |
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|
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/* Return the nr of instructions executed: */ |
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return n_instrs; |
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} |
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#endif /* DYNTRANS_CPU_RUN_INSTR */ |
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|
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|
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|
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#ifdef DYNTRANS_FUNCTION_TRACE |
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/* |
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* XXX_cpu_functioncall_trace(): |
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* |
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* Without this function, the main trace tree function prints something |
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* like <f()> or <0x1234()> on a function call. It is up to this |
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* function to print the arguments passed. |
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*/ |
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void DYNTRANS_FUNCTION_TRACE(struct cpu *cpu, uint64_t f, int n_args) |
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{ |
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char strbuf[50]; |
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char *symbol; |
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uint64_t ot; |
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int x, print_dots = 1, n_args_to_print = |
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#ifdef DYNTRANS_ALPHA |
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6 |
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#else |
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#ifdef DYNTRANS_SH |
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8 |
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#else |
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4 /* Default value for most archs */ |
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#endif |
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#endif |
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; |
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|
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if (n_args >= 0 && n_args <= n_args_to_print) { |
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print_dots = 0; |
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n_args_to_print = n_args; |
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} |
319 |
|
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/* |
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* TODO: The type of each argument should be taken from the symbol |
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* table, in some way. |
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* |
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* The code here does a kind of "heuristic guess" regarding what the |
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* argument values might mean. Sometimes the output looks weird, but |
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* usually it looks good enough. |
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* |
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* Print ".." afterwards to show that there might be more arguments |
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* than were passed in register. |
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*/ |
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for (x=0; x<n_args_to_print; x++) { |
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int64_t d; |
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#ifdef DYNTRANS_X86 |
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d = 0; /* TODO */ |
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#else |
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/* Args in registers: */ |
337 |
d = cpu->cd.DYNTRANS_ARCH. |
338 |
#ifdef DYNTRANS_ALPHA |
339 |
r[ALPHA_A0 |
340 |
#endif |
341 |
#ifdef DYNTRANS_ARM |
342 |
r[0 |
343 |
#endif |
344 |
#ifdef DYNTRANS_AVR |
345 |
/* TODO: 24,25 = first register, but then |
346 |
they go downwards, ie. 22,23 and so on */ |
347 |
r[24 |
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#endif |
349 |
#ifdef DYNTRANS_HPPA |
350 |
r[0 /* TODO */ |
351 |
#endif |
352 |
#ifdef DYNTRANS_I960 |
353 |
r[0 /* TODO */ |
354 |
#endif |
355 |
#ifdef DYNTRANS_IA64 |
356 |
r[0 /* TODO */ |
357 |
#endif |
358 |
#ifdef DYNTRANS_M68K |
359 |
d[0 /* TODO */ |
360 |
#endif |
361 |
#ifdef DYNTRANS_MIPS |
362 |
gpr[MIPS_GPR_A0 |
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#endif |
364 |
#ifdef DYNTRANS_NEWMIPS |
365 |
r[0 /* TODO */ |
366 |
#endif |
367 |
#ifdef DYNTRANS_PPC |
368 |
gpr[3 |
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#endif |
370 |
#ifdef DYNTRANS_SH |
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r[2 |
372 |
#endif |
373 |
#ifdef DYNTRANS_SPARC |
374 |
r_i[0 |
375 |
#endif |
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+ x]; |
377 |
#endif |
378 |
symbol = get_symbol_name(&cpu->machine->symbol_context, d, &ot); |
379 |
|
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if (d > -256 && d < 256) |
381 |
fatal("%i", (int)d); |
382 |
else if (memory_points_to_string(cpu, cpu->mem, d, 1)) |
383 |
fatal("\"%s\"", memory_conv_to_string(cpu, |
384 |
cpu->mem, d, strbuf, sizeof(strbuf))); |
385 |
else if (symbol != NULL && ot == 0) |
386 |
fatal("&%s", symbol); |
387 |
else { |
388 |
if (cpu->is_32bit) |
389 |
fatal("0x%x", (int)d); |
390 |
else |
391 |
fatal("0x%llx", (long long)d); |
392 |
} |
393 |
|
394 |
if (x < n_args_to_print - 1) |
395 |
fatal(","); |
396 |
} |
397 |
|
398 |
if (print_dots) |
399 |
fatal(",.."); |
400 |
} |
401 |
#endif |
402 |
|
403 |
|
404 |
|
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#ifdef DYNTRANS_TC_ALLOCATE_DEFAULT_PAGE |
406 |
/* forward declaration of to_be_translated and end_of_page: */ |
407 |
static void instr(to_be_translated)(struct cpu *, struct DYNTRANS_IC *); |
408 |
static void instr(end_of_page)(struct cpu *,struct DYNTRANS_IC *); |
409 |
#ifdef DYNTRANS_DUALMODE_32 |
410 |
static void instr32(to_be_translated)(struct cpu *, struct DYNTRANS_IC *); |
411 |
static void instr32(end_of_page)(struct cpu *,struct DYNTRANS_IC *); |
412 |
#endif |
413 |
/* |
414 |
* XXX_tc_allocate_default_page(): |
415 |
* |
416 |
* Create a default page (with just pointers to instr(to_be_translated) |
417 |
* at cpu->translation_cache_cur_ofs. |
418 |
*/ |
419 |
static void DYNTRANS_TC_ALLOCATE_DEFAULT_PAGE(struct cpu *cpu, |
420 |
uint64_t physaddr) |
421 |
{ |
422 |
struct DYNTRANS_TC_PHYSPAGE *ppp; |
423 |
int i; |
424 |
|
425 |
/* Create the physpage header: */ |
426 |
ppp = (struct DYNTRANS_TC_PHYSPAGE *)(cpu->translation_cache |
427 |
+ cpu->translation_cache_cur_ofs); |
428 |
ppp->next_ofs = 0; |
429 |
ppp->physaddr = physaddr; |
430 |
|
431 |
/* TODO: Is this faster than copying an entire template page? */ |
432 |
for (i=0; i<DYNTRANS_IC_ENTRIES_PER_PAGE; i++) |
433 |
ppp->ics[i].f = |
434 |
#ifdef DYNTRANS_DUALMODE_32 |
435 |
cpu->is_32bit? instr32(to_be_translated) : |
436 |
#endif |
437 |
instr(to_be_translated); |
438 |
|
439 |
ppp->ics[DYNTRANS_IC_ENTRIES_PER_PAGE].f = |
440 |
#ifdef DYNTRANS_DUALMODE_32 |
441 |
cpu->is_32bit? instr32(end_of_page) : |
442 |
#endif |
443 |
instr(end_of_page); |
444 |
|
445 |
cpu->translation_cache_cur_ofs += sizeof(struct DYNTRANS_TC_PHYSPAGE); |
446 |
|
447 |
cpu->translation_cache_cur_ofs --; |
448 |
cpu->translation_cache_cur_ofs |= 63; |
449 |
cpu->translation_cache_cur_ofs ++; |
450 |
} |
451 |
#endif /* DYNTRANS_TC_ALLOCATE_DEFAULT_PAGE */ |
452 |
|
453 |
|
454 |
|
455 |
#ifdef DYNTRANS_PC_TO_POINTERS_FUNC |
456 |
/* |
457 |
* XXX_pc_to_pointers_generic(): |
458 |
* |
459 |
* Generic case. See DYNTRANS_PC_TO_POINTERS_FUNC below. |
460 |
*/ |
461 |
void DYNTRANS_PC_TO_POINTERS_GENERIC(struct cpu *cpu) |
462 |
{ |
463 |
#ifdef MODE32 |
464 |
uint32_t |
465 |
#else |
466 |
uint64_t |
467 |
#endif |
468 |
cached_pc, physaddr = 0; |
469 |
uint32_t physpage_ofs; |
470 |
int ok, pagenr, table_index; |
471 |
uint32_t *physpage_entryp; |
472 |
struct DYNTRANS_TC_PHYSPAGE *ppp; |
473 |
|
474 |
#ifdef MODE32 |
475 |
int index; |
476 |
cached_pc = cpu->pc; |
477 |
index = DYNTRANS_ADDR_TO_PAGENR(cached_pc); |
478 |
#else |
479 |
#ifdef DYNTRANS_ALPHA |
480 |
uint32_t a, b; |
481 |
int kernel = 0; |
482 |
struct alpha_vph_page *vph_p; |
483 |
cached_pc = cpu->pc; |
484 |
a = (cached_pc >> ALPHA_LEVEL0_SHIFT) & (ALPHA_LEVEL0 - 1); |
485 |
b = (cached_pc >> ALPHA_LEVEL1_SHIFT) & (ALPHA_LEVEL1 - 1); |
486 |
if ((cached_pc >> ALPHA_TOPSHIFT) == ALPHA_TOP_KERNEL) { |
487 |
vph_p = cpu->cd.alpha.vph_table0_kernel[a]; |
488 |
kernel = 1; |
489 |
} else |
490 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
491 |
#else |
492 |
#ifdef DYNTRANS_IA64 |
493 |
fatal("IA64 todo\n"); |
494 |
#else |
495 |
fatal("Neither alpha, ia64, nor 32-bit? 3\n"); |
496 |
exit(1); |
497 |
#endif |
498 |
#endif |
499 |
#endif |
500 |
|
501 |
/* Virtual to physical address translation: */ |
502 |
ok = 0; |
503 |
#ifdef MODE32 |
504 |
if (cpu->cd.DYNTRANS_ARCH.host_load[index] != NULL) { |
505 |
physaddr = cpu->cd.DYNTRANS_ARCH.phys_addr[index]; |
506 |
ok = 1; |
507 |
} |
508 |
#else |
509 |
#ifdef DYNTRANS_ALPHA |
510 |
if (vph_p->host_load[b] != NULL) { |
511 |
physaddr = vph_p->phys_addr[b]; |
512 |
ok = 1; |
513 |
} |
514 |
#else |
515 |
#ifdef DYNTRANS_IA64 |
516 |
fatal("IA64 todo\n"); |
517 |
#else |
518 |
fatal("Neither alpha, ia64, nor 32-bit? 4\n"); |
519 |
exit(1); |
520 |
#endif |
521 |
#endif |
522 |
#endif |
523 |
|
524 |
if (!ok) { |
525 |
uint64_t paddr; |
526 |
if (cpu->translate_address != NULL) |
527 |
ok = cpu->translate_address(cpu, cached_pc, |
528 |
&paddr, FLAG_INSTR); |
529 |
else { |
530 |
paddr = cached_pc; |
531 |
ok = 1; |
532 |
} |
533 |
if (!ok) { |
534 |
/* fatal("TODO: instruction vaddr=>paddr translation" |
535 |
" failed. vaddr=0x%llx\n", (long long)cached_pc); |
536 |
fatal("!! cpu->pc=0x%llx\n", (long long)cpu->pc); */ |
537 |
|
538 |
ok = cpu->translate_address(cpu, cpu->pc, &paddr, |
539 |
FLAG_INSTR); |
540 |
|
541 |
/* printf("EXCEPTION HANDLER: vaddr = 0x%x ==> " |
542 |
"paddr = 0x%x\n", (int)cpu->pc, (int)paddr); |
543 |
fatal("!? cpu->pc=0x%llx\n", (long long)cpu->pc); */ |
544 |
|
545 |
if (!ok) { |
546 |
fatal("FATAL: could not find physical" |
547 |
" address of the exception handler?"); |
548 |
exit(1); |
549 |
} |
550 |
} |
551 |
cached_pc = cpu->pc; |
552 |
#ifdef MODE32 |
553 |
index = DYNTRANS_ADDR_TO_PAGENR(cached_pc); |
554 |
#endif |
555 |
physaddr = paddr; |
556 |
} |
557 |
|
558 |
#ifdef MODE32 |
559 |
if (cpu->cd.DYNTRANS_ARCH.host_load[index] == NULL) { |
560 |
unsigned char *host_page = memory_paddr_to_hostaddr(cpu->mem, |
561 |
physaddr, MEM_READ); |
562 |
if (host_page != NULL) { |
563 |
int q = DYNTRANS_PAGESIZE - 1; |
564 |
host_page += (physaddr & |
565 |
((1 << BITS_PER_MEMBLOCK) - 1) & ~q); |
566 |
cpu->update_translation_table(cpu, cached_pc & ~q, |
567 |
host_page, TLB_CODE, physaddr & ~q); |
568 |
} |
569 |
} |
570 |
#endif |
571 |
|
572 |
if (cpu->translation_cache_cur_ofs >= DYNTRANS_CACHE_SIZE) { |
573 |
debug("[ dyntrans: resetting the translation cache ]\n"); |
574 |
cpu_create_or_reset_tc(cpu); |
575 |
} |
576 |
|
577 |
pagenr = DYNTRANS_ADDR_TO_PAGENR(physaddr); |
578 |
table_index = PAGENR_TO_TABLE_INDEX(pagenr); |
579 |
|
580 |
physpage_entryp = &(((uint32_t *)cpu->translation_cache)[table_index]); |
581 |
physpage_ofs = *physpage_entryp; |
582 |
ppp = NULL; |
583 |
|
584 |
/* Traverse the physical page chain: */ |
585 |
while (physpage_ofs != 0) { |
586 |
ppp = (struct DYNTRANS_TC_PHYSPAGE *)(cpu->translation_cache |
587 |
+ physpage_ofs); |
588 |
/* If we found the page in the cache, then we're done: */ |
589 |
if (ppp->physaddr == physaddr) |
590 |
break; |
591 |
/* Try the next page in the chain: */ |
592 |
physpage_ofs = ppp->next_ofs; |
593 |
} |
594 |
|
595 |
/* If the offset is 0 (or ppp is NULL), then we need to create a |
596 |
new "default" empty translation page. */ |
597 |
|
598 |
if (ppp == NULL) { |
599 |
/* fatal("CREATING page %lli (physaddr 0x%llx), table index " |
600 |
"%i\n", (long long)pagenr, (long long)physaddr, |
601 |
(int)table_index); */ |
602 |
*physpage_entryp = physpage_ofs = |
603 |
cpu->translation_cache_cur_ofs; |
604 |
|
605 |
/* Allocate a default page, with to_be_translated entries: */ |
606 |
DYNTRANS_TC_ALLOCATE(cpu, physaddr); |
607 |
|
608 |
ppp = (struct DYNTRANS_TC_PHYSPAGE *)(cpu->translation_cache |
609 |
+ physpage_ofs); |
610 |
} |
611 |
|
612 |
#ifdef MODE32 |
613 |
if (cpu->cd.DYNTRANS_ARCH.host_load[index] != NULL) |
614 |
cpu->cd.DYNTRANS_ARCH.phys_page[index] = ppp; |
615 |
#endif |
616 |
|
617 |
#ifdef DYNTRANS_ALPHA |
618 |
if (vph_p->host_load[b] != NULL) |
619 |
vph_p->phys_page[b] = ppp; |
620 |
#endif |
621 |
|
622 |
#ifdef MODE32 |
623 |
/* Small optimization: only mark the physical page as non-writable |
624 |
if it did not contain translations. (Because if it does contain |
625 |
translations, it is already non-writable.) */ |
626 |
if (!cpu->cd.DYNTRANS_ARCH.phystranslation[pagenr >> 5] & |
627 |
(1 << (pagenr & 31))) |
628 |
#endif |
629 |
cpu->invalidate_translation_caches(cpu, physaddr, |
630 |
JUST_MARK_AS_NON_WRITABLE | INVALIDATE_PADDR); |
631 |
|
632 |
cpu->cd.DYNTRANS_ARCH.cur_ic_page = &ppp->ics[0]; |
633 |
|
634 |
cpu->cd.DYNTRANS_ARCH.next_ic = cpu->cd.DYNTRANS_ARCH.cur_ic_page + |
635 |
DYNTRANS_PC_TO_IC_ENTRY(cached_pc); |
636 |
|
637 |
/* printf("cached_pc=0x%016llx pagenr=%lli table_index=%lli, " |
638 |
"physpage_ofs=0x%016llx\n", (long long)cached_pc, (long long)pagenr, |
639 |
(long long)table_index, (long long)physpage_ofs); */ |
640 |
} |
641 |
|
642 |
|
643 |
/* |
644 |
* XXX_pc_to_pointers(): |
645 |
* |
646 |
* This function uses the current program counter (a virtual address) to |
647 |
* find out which physical translation page to use, and then sets the current |
648 |
* translation page pointers to that page. |
649 |
* |
650 |
* If there was no translation page for that physical page, then an empty |
651 |
* one is created. |
652 |
* |
653 |
* NOTE: This is the quick lookup version. See |
654 |
* DYNTRANS_PC_TO_POINTERS_GENERIC above for the generic case. |
655 |
*/ |
656 |
void DYNTRANS_PC_TO_POINTERS_FUNC(struct cpu *cpu) |
657 |
{ |
658 |
#ifdef MODE32 |
659 |
uint32_t |
660 |
#else |
661 |
uint64_t |
662 |
#endif |
663 |
cached_pc; |
664 |
struct DYNTRANS_TC_PHYSPAGE *ppp; |
665 |
|
666 |
#ifdef MODE32 |
667 |
int index; |
668 |
cached_pc = cpu->pc; |
669 |
index = DYNTRANS_ADDR_TO_PAGENR(cached_pc); |
670 |
ppp = cpu->cd.DYNTRANS_ARCH.phys_page[index]; |
671 |
if (ppp != NULL) |
672 |
goto have_it; |
673 |
#else |
674 |
#ifdef DYNTRANS_ALPHA |
675 |
uint32_t a, b; |
676 |
int kernel = 0; |
677 |
struct alpha_vph_page *vph_p; |
678 |
cached_pc = cpu->pc; |
679 |
a = (cached_pc >> ALPHA_LEVEL0_SHIFT) & (ALPHA_LEVEL0 - 1); |
680 |
b = (cached_pc >> ALPHA_LEVEL1_SHIFT) & (ALPHA_LEVEL1 - 1); |
681 |
if ((cached_pc >> ALPHA_TOPSHIFT) == ALPHA_TOP_KERNEL) { |
682 |
vph_p = cpu->cd.alpha.vph_table0_kernel[a]; |
683 |
kernel = 1; |
684 |
} else |
685 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
686 |
if (vph_p != cpu->cd.alpha.vph_default_page) { |
687 |
ppp = vph_p->phys_page[b]; |
688 |
if (ppp != NULL) |
689 |
goto have_it; |
690 |
} |
691 |
#else |
692 |
/* Temporary, to avoid a compiler warning: */ |
693 |
cached_pc = 0; |
694 |
ppp = NULL; |
695 |
#ifdef DYNTRANS_IA64 |
696 |
fatal("IA64 todo\n"); |
697 |
#else |
698 |
fatal("Neither alpha, ia64, nor 32-bit? 1\n"); |
699 |
exit(1); |
700 |
#endif |
701 |
#endif |
702 |
#endif |
703 |
|
704 |
DYNTRANS_PC_TO_POINTERS_GENERIC(cpu); |
705 |
return; |
706 |
|
707 |
/* Quick return path: */ |
708 |
#if defined(MODE32) || defined(DYNTRANS_ALPHA) |
709 |
have_it: |
710 |
cpu->cd.DYNTRANS_ARCH.cur_ic_page = &ppp->ics[0]; |
711 |
cpu->cd.DYNTRANS_ARCH.next_ic = cpu->cd.DYNTRANS_ARCH.cur_ic_page + |
712 |
DYNTRANS_PC_TO_IC_ENTRY(cached_pc); |
713 |
|
714 |
/* printf("cached_pc=0x%016llx pagenr=%lli table_index=%lli, " |
715 |
"physpage_ofs=0x%016llx\n", (long long)cached_pc, (long long)pagenr, |
716 |
(long long)table_index, (long long)physpage_ofs); */ |
717 |
#endif |
718 |
} |
719 |
#endif /* DYNTRANS_PC_TO_POINTERS_FUNC */ |
720 |
|
721 |
|
722 |
|
723 |
#ifdef DYNTRANS_INVAL_ENTRY |
724 |
/* |
725 |
* XXX_invalidate_tlb_entry(): |
726 |
* |
727 |
* Invalidate one translation entry (based on virtual address). |
728 |
* |
729 |
* If the JUST_MARK_AS_NON_WRITABLE flag is set, then the translation entry |
730 |
* is just downgraded to non-writable (ie the host store page is set to |
731 |
* NULL). Otherwise, the entire translation is removed. |
732 |
*/ |
733 |
static void DYNTRANS_INVALIDATE_TLB_ENTRY(struct cpu *cpu, |
734 |
#ifdef MODE32 |
735 |
uint32_t |
736 |
#else |
737 |
uint64_t |
738 |
#endif |
739 |
vaddr_page, int flags) |
740 |
{ |
741 |
#ifdef MODE32 |
742 |
uint32_t index = DYNTRANS_ADDR_TO_PAGENR(vaddr_page); |
743 |
|
744 |
#ifdef DYNTRANS_ARM |
745 |
cpu->cd.DYNTRANS_ARCH.is_userpage[index >> 5] &= ~(1 << (index & 31)); |
746 |
#endif |
747 |
|
748 |
if (flags & JUST_MARK_AS_NON_WRITABLE) { |
749 |
/* printf("JUST MARKING NON-W: vaddr 0x%08x\n", |
750 |
(int)vaddr_page); */ |
751 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = NULL; |
752 |
} else { |
753 |
cpu->cd.DYNTRANS_ARCH.host_load[index] = NULL; |
754 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = NULL; |
755 |
cpu->cd.DYNTRANS_ARCH.phys_addr[index] = 0; |
756 |
cpu->cd.DYNTRANS_ARCH.phys_page[index] = NULL; |
757 |
cpu->cd.DYNTRANS_ARCH.vaddr_to_tlbindex[index] = 0; |
758 |
} |
759 |
#else |
760 |
/* 2-level: */ |
761 |
#ifdef DYNTRANS_ALPHA |
762 |
struct alpha_vph_page *vph_p; |
763 |
uint32_t a, b; |
764 |
int kernel = 0; |
765 |
|
766 |
a = (vaddr_page >> ALPHA_LEVEL0_SHIFT) & (ALPHA_LEVEL0 - 1); |
767 |
b = (vaddr_page >> ALPHA_LEVEL1_SHIFT) & (ALPHA_LEVEL1 - 1); |
768 |
if ((vaddr_page >> ALPHA_TOPSHIFT) == ALPHA_TOP_KERNEL) { |
769 |
vph_p = cpu->cd.alpha.vph_table0_kernel[a]; |
770 |
kernel = 1; |
771 |
} else |
772 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
773 |
|
774 |
if (vph_p == cpu->cd.alpha.vph_default_page) { |
775 |
fatal("alpha_invalidate_tlb_entry(): huh? Problem 1.\n"); |
776 |
exit(1); |
777 |
} |
778 |
|
779 |
if (flags & JUST_MARK_AS_NON_WRITABLE) { |
780 |
vph_p->host_store[b] = NULL; |
781 |
return; |
782 |
} |
783 |
vph_p->host_load[b] = NULL; |
784 |
vph_p->host_store[b] = NULL; |
785 |
vph_p->phys_addr[b] = 0; |
786 |
vph_p->phys_page[b] = NULL; |
787 |
vph_p->refcount --; |
788 |
if (vph_p->refcount < 0) { |
789 |
fatal("alpha_invalidate_tlb_entry(): huh? Problem 2.\n"); |
790 |
exit(1); |
791 |
} |
792 |
if (vph_p->refcount == 0) { |
793 |
vph_p->next = cpu->cd.alpha.vph_next_free_page; |
794 |
cpu->cd.alpha.vph_next_free_page = vph_p; |
795 |
if (kernel) |
796 |
cpu->cd.alpha.vph_table0_kernel[a] = |
797 |
cpu->cd.alpha.vph_default_page; |
798 |
else |
799 |
cpu->cd.alpha.vph_table0[a] = |
800 |
cpu->cd.alpha.vph_default_page; |
801 |
} |
802 |
#else /* !DYNTRANS_ALPHA */ |
803 |
#ifdef DYNTRANS_IA64 |
804 |
fatal("IA64: blah blah TODO\n"); |
805 |
#else |
806 |
fatal("Not yet for non-1-level, non-Alpha, non-ia64\n"); |
807 |
#endif /* !DYNTRANS_IA64 */ |
808 |
#endif /* !DYNTRANS_ALPHA */ |
809 |
#endif |
810 |
} |
811 |
#endif |
812 |
|
813 |
|
814 |
#ifdef DYNTRANS_INVALIDATE_TC |
815 |
/* |
816 |
* XXX_invalidate_translation_caches(): |
817 |
* |
818 |
* Invalidate all entries matching a specific physical address, a specific |
819 |
* virtual address, or ALL entries. |
820 |
* |
821 |
* flags should be one of |
822 |
* INVALIDATE_PADDR INVALIDATE_VADDR or INVALIDATE_ALL |
823 |
* |
824 |
* In the case when all translations are invalidated, paddr doesn't need |
825 |
* to be supplied. |
826 |
* |
827 |
* NOTE/TODO: When invalidating a virtual address, it is only cleared from |
828 |
* the quick translation array, not from the linear |
829 |
* vph_tlb_entry[] array. Hopefully this is enough anyway. |
830 |
*/ |
831 |
void DYNTRANS_INVALIDATE_TC(struct cpu *cpu, uint64_t paddr, int flags) |
832 |
{ |
833 |
int r; |
834 |
#ifdef MODE32 |
835 |
uint32_t |
836 |
#else |
837 |
uint64_t |
838 |
#endif |
839 |
addr_page = paddr & ~(DYNTRANS_PAGESIZE - 1); |
840 |
|
841 |
/* fatal("invalidate(): "); */ |
842 |
|
843 |
/* Quick case for virtual addresses: see note above. */ |
844 |
if (flags & INVALIDATE_VADDR) { |
845 |
/* fatal("vaddr 0x%08x\n", (int)addr_page); */ |
846 |
DYNTRANS_INVALIDATE_TLB_ENTRY(cpu, addr_page, flags); |
847 |
return; |
848 |
} |
849 |
|
850 |
if (flags & INVALIDATE_ALL) { |
851 |
/* fatal("all\n"); */ |
852 |
for (r=0; r<DYNTRANS_MAX_VPH_TLB_ENTRIES; r++) { |
853 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid) { |
854 |
DYNTRANS_INVALIDATE_TLB_ENTRY(cpu, cpu->cd. |
855 |
DYNTRANS_ARCH.vph_tlb_entry[r].vaddr_page, |
856 |
0); |
857 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid=0; |
858 |
} |
859 |
} |
860 |
return; |
861 |
} |
862 |
|
863 |
/* fatal("paddr 0x%08x\n", (int)addr_page); */ |
864 |
|
865 |
for (r=0; r<DYNTRANS_MAX_VPH_TLB_ENTRIES; r++) { |
866 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid && ( |
867 |
(cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].paddr_page == |
868 |
addr_page && flags & INVALIDATE_PADDR) || |
869 |
flags & INVALIDATE_ALL) ) { |
870 |
DYNTRANS_INVALIDATE_TLB_ENTRY(cpu, |
871 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].vaddr_page, |
872 |
flags); |
873 |
if (flags & JUST_MARK_AS_NON_WRITABLE) |
874 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r] |
875 |
.writeflag = 0; |
876 |
else |
877 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r] |
878 |
.valid = 0; |
879 |
} |
880 |
} |
881 |
} |
882 |
#endif /* DYNTRANS_INVALIDATE_TC */ |
883 |
|
884 |
|
885 |
|
886 |
#ifdef DYNTRANS_INVALIDATE_TC_CODE |
887 |
/* |
888 |
* XXX_invalidate_code_translation(): |
889 |
* |
890 |
* Invalidate code translations for a specific physical address, a specific |
891 |
* virtual address, or for all entries in the cache. |
892 |
*/ |
893 |
void DYNTRANS_INVALIDATE_TC_CODE(struct cpu *cpu, uint64_t addr, int flags) |
894 |
{ |
895 |
int r; |
896 |
#ifdef MODE32 |
897 |
uint32_t |
898 |
#else |
899 |
uint64_t |
900 |
#endif |
901 |
vaddr_page, paddr_page; |
902 |
|
903 |
addr &= ~(DYNTRANS_PAGESIZE-1); |
904 |
|
905 |
/* printf("DYNTRANS_INVALIDATE_TC_CODE addr=0x%08x flags=%i\n", |
906 |
(int)addr, flags); */ |
907 |
|
908 |
if (flags & INVALIDATE_PADDR) { |
909 |
int pagenr, table_index; |
910 |
uint32_t physpage_ofs, *physpage_entryp; |
911 |
struct DYNTRANS_TC_PHYSPAGE *ppp, *prev_ppp; |
912 |
|
913 |
pagenr = DYNTRANS_ADDR_TO_PAGENR(addr); |
914 |
|
915 |
#ifdef MODE32 |
916 |
/* If this page isn't marked as having any translations, |
917 |
then return immediately. */ |
918 |
if (!(cpu->cd.DYNTRANS_ARCH.phystranslation[pagenr >> 5] |
919 |
& 1 << (pagenr & 31))) |
920 |
return; |
921 |
/* Remove the mark: */ |
922 |
cpu->cd.DYNTRANS_ARCH.phystranslation[pagenr >> 5] &= |
923 |
~ (1 << (pagenr & 31)); |
924 |
#endif |
925 |
|
926 |
table_index = PAGENR_TO_TABLE_INDEX(pagenr); |
927 |
|
928 |
physpage_entryp = &(((uint32_t *)cpu-> |
929 |
translation_cache)[table_index]); |
930 |
physpage_ofs = *physpage_entryp; |
931 |
prev_ppp = ppp = NULL; |
932 |
|
933 |
/* Traverse the physical page chain: */ |
934 |
while (physpage_ofs != 0) { |
935 |
prev_ppp = ppp; |
936 |
ppp = (struct DYNTRANS_TC_PHYSPAGE *) |
937 |
(cpu->translation_cache + physpage_ofs); |
938 |
/* If we found the page in the cache, |
939 |
then we're done: */ |
940 |
if (ppp->physaddr == addr) |
941 |
break; |
942 |
/* Try the next page in the chain: */ |
943 |
physpage_ofs = ppp->next_ofs; |
944 |
} |
945 |
|
946 |
if (physpage_ofs == 0) |
947 |
ppp = NULL; |
948 |
|
949 |
#if 1 |
950 |
/* |
951 |
* "Bypass" the page, removing it from the code cache. |
952 |
* |
953 |
* NOTE/TODO: This gives _TERRIBLE_ performance with self- |
954 |
* modifying code, or when a single page is used for both |
955 |
* code and (writable) data. |
956 |
*/ |
957 |
if (ppp != NULL) { |
958 |
if (prev_ppp != NULL) |
959 |
prev_ppp->next_ofs = ppp->next_ofs; |
960 |
else |
961 |
*physpage_entryp = ppp->next_ofs; |
962 |
} |
963 |
#else |
964 |
/* |
965 |
* Instead of removing the page from the code cache, each |
966 |
* entry can be set to "to_be_translated". This is slow in |
967 |
* the general case, but in the case of self-modifying code, |
968 |
* it might be faster since we don't risk wasting cache |
969 |
* memory as quickly (which would force unnecessary Restarts). |
970 |
*/ |
971 |
if (ppp != NULL) { |
972 |
/* TODO: Is this faster than copying an entire |
973 |
template page? */ |
974 |
int i; |
975 |
for (i=0; i<DYNTRANS_IC_ENTRIES_PER_PAGE; i++) |
976 |
ppp->ics[i].f = |
977 |
#ifdef DYNTRANS_DUALMODE_32 |
978 |
cpu->is_32bit? instr32(to_be_translated) : |
979 |
#endif |
980 |
instr(to_be_translated); |
981 |
} |
982 |
#endif |
983 |
} |
984 |
|
985 |
/* Invalidate entries (NOTE: only code entries) in the VPH table: */ |
986 |
for (r = DYNTRANS_MAX_VPH_TLB_ENTRIES/2; |
987 |
r < DYNTRANS_MAX_VPH_TLB_ENTRIES; r ++) { |
988 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid) { |
989 |
vaddr_page = cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r] |
990 |
.vaddr_page & ~(DYNTRANS_PAGESIZE-1); |
991 |
paddr_page = cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r] |
992 |
.paddr_page & ~(DYNTRANS_PAGESIZE-1); |
993 |
|
994 |
if (flags & INVALIDATE_ALL || |
995 |
(flags & INVALIDATE_PADDR && paddr_page == addr) || |
996 |
(flags & INVALIDATE_VADDR && vaddr_page == addr)) { |
997 |
#ifdef MODE32 |
998 |
uint32_t index = |
999 |
DYNTRANS_ADDR_TO_PAGENR(vaddr_page); |
1000 |
cpu->cd.DYNTRANS_ARCH.phys_page[index] = NULL; |
1001 |
/* Remove the mark: */ |
1002 |
index = DYNTRANS_ADDR_TO_PAGENR(paddr_page); |
1003 |
cpu->cd.DYNTRANS_ARCH.phystranslation[ |
1004 |
index >> 5] &= ~ (1 << (index & 31)); |
1005 |
#else |
1006 |
/* 2-level: */ |
1007 |
#ifdef DYNTRANS_ALPHA |
1008 |
struct alpha_vph_page *vph_p; |
1009 |
uint32_t a, b; |
1010 |
int kernel = 0; |
1011 |
|
1012 |
a = (vaddr_page >> ALPHA_LEVEL0_SHIFT) |
1013 |
& (ALPHA_LEVEL0 - 1); |
1014 |
b = (vaddr_page >> ALPHA_LEVEL1_SHIFT) |
1015 |
& (ALPHA_LEVEL1 - 1); |
1016 |
if ((vaddr_page >> ALPHA_TOPSHIFT) == |
1017 |
ALPHA_TOP_KERNEL) { |
1018 |
vph_p = cpu->cd.alpha. |
1019 |
vph_table0_kernel[a]; |
1020 |
kernel = 1; |
1021 |
} else |
1022 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
1023 |
vph_p->phys_page[b] = NULL; |
1024 |
#else /* !DYNTRANS_ALPHA */ |
1025 |
#ifdef DYNTRANS_IA64 |
1026 |
fatal("IA64: blah yo yo TODO\n"); |
1027 |
#else |
1028 |
fatal("Not yet for non-1-level, non-Alpha, " |
1029 |
"non-ia64\n"); |
1030 |
#endif /* !DYNTRANS_IA64 */ |
1031 |
#endif /* !DYNTRANS_ALPHA */ |
1032 |
#endif |
1033 |
} |
1034 |
} |
1035 |
} |
1036 |
} |
1037 |
#endif /* DYNTRANS_INVALIDATE_TC_CODE */ |
1038 |
|
1039 |
|
1040 |
|
1041 |
#ifdef DYNTRANS_UPDATE_TRANSLATION_TABLE |
1042 |
/* |
1043 |
* XXX_update_translation_table(): |
1044 |
* |
1045 |
* Update the virtual memory translation tables. |
1046 |
*/ |
1047 |
void DYNTRANS_UPDATE_TRANSLATION_TABLE(struct cpu *cpu, uint64_t vaddr_page, |
1048 |
unsigned char *host_page, int writeflag, uint64_t paddr_page) |
1049 |
{ |
1050 |
#ifndef MODE32 |
1051 |
int64_t lowest, highest = -1; |
1052 |
#endif |
1053 |
int found, r, lowest_index, start, end, useraccess = 0; |
1054 |
|
1055 |
#ifdef DYNTRANS_ALPHA |
1056 |
uint32_t a, b; |
1057 |
struct alpha_vph_page *vph_p; |
1058 |
int kernel = 0; |
1059 |
/* fatal("update_translation_table(): v=0x%llx, h=%p w=%i" |
1060 |
" p=0x%llx\n", (long long)vaddr_page, host_page, writeflag, |
1061 |
(long long)paddr_page); */ |
1062 |
#else |
1063 |
#ifdef MODE32 |
1064 |
uint32_t index; |
1065 |
vaddr_page &= 0xffffffffULL; |
1066 |
paddr_page &= 0xffffffffULL; |
1067 |
/* fatal("update_translation_table(): v=0x%x, h=%p w=%i" |
1068 |
" p=0x%x\n", (int)vaddr_page, host_page, writeflag, |
1069 |
(int)paddr_page); */ |
1070 |
#else /* !MODE32 */ |
1071 |
#ifdef DYNTRANS_IA64 |
1072 |
fatal("IA64 update todo\n"); |
1073 |
#else |
1074 |
fatal("Neither 32-bit, IA64, nor Alpha? 2\n"); |
1075 |
exit(1); |
1076 |
#endif |
1077 |
#endif |
1078 |
#endif |
1079 |
|
1080 |
if (writeflag & MEMORY_USER_ACCESS) { |
1081 |
writeflag &= ~MEMORY_USER_ACCESS; |
1082 |
useraccess = 1; |
1083 |
} |
1084 |
|
1085 |
start = 0; end = DYNTRANS_MAX_VPH_TLB_ENTRIES / 2; |
1086 |
#if 1 |
1087 |
/* Half of the TLB used for data, half for code: */ |
1088 |
if (writeflag & TLB_CODE) { |
1089 |
writeflag &= ~TLB_CODE; |
1090 |
start = end; end = DYNTRANS_MAX_VPH_TLB_ENTRIES; |
1091 |
} |
1092 |
#else |
1093 |
/* Data and code entries are mixed. */ |
1094 |
end = DYNTRANS_MAX_VPH_TLB_ENTRIES; |
1095 |
#endif |
1096 |
|
1097 |
/* Scan the current TLB entries: */ |
1098 |
lowest_index = start; |
1099 |
|
1100 |
#ifdef MODE32 |
1101 |
/* |
1102 |
* NOTE 1: vaddr_to_tlbindex is one more than the index, so that |
1103 |
* 0 becomes -1, which means a miss. |
1104 |
* |
1105 |
* NOTE 2: When a miss occurs, instead of scanning the entire tlb |
1106 |
* for the entry with the lowest time stamp, just choosing |
1107 |
* one at random will work as well. |
1108 |
*/ |
1109 |
found = (int)cpu->cd.DYNTRANS_ARCH.vaddr_to_tlbindex[ |
1110 |
DYNTRANS_ADDR_TO_PAGENR(vaddr_page)] - 1; |
1111 |
if (found < 0) { |
1112 |
static unsigned int x = 0; |
1113 |
lowest_index = (x % (end-start)) + start; |
1114 |
x ++; |
1115 |
} |
1116 |
#else |
1117 |
lowest = cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[0].timestamp; |
1118 |
found = -1; |
1119 |
for (r=start; r<end; r++) { |
1120 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].timestamp < lowest) { |
1121 |
lowest = cpu->cd.DYNTRANS_ARCH. |
1122 |
vph_tlb_entry[r].timestamp; |
1123 |
lowest_index = r; |
1124 |
} |
1125 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].timestamp > highest) |
1126 |
highest = cpu->cd.DYNTRANS_ARCH. |
1127 |
vph_tlb_entry[r].timestamp; |
1128 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid && |
1129 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].vaddr_page == |
1130 |
vaddr_page) { |
1131 |
found = r; |
1132 |
break; |
1133 |
} |
1134 |
} |
1135 |
#endif |
1136 |
|
1137 |
if (found < 0) { |
1138 |
/* Create the new TLB entry, overwriting the oldest one: */ |
1139 |
r = lowest_index; |
1140 |
if (cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid) { |
1141 |
/* This one has to be invalidated first: */ |
1142 |
DYNTRANS_INVALIDATE_TLB_ENTRY(cpu, |
1143 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].vaddr_page, |
1144 |
0); |
1145 |
} |
1146 |
|
1147 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].valid = 1; |
1148 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].host_page = host_page; |
1149 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].paddr_page = paddr_page; |
1150 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].vaddr_page = vaddr_page; |
1151 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].writeflag = |
1152 |
writeflag & MEM_WRITE; |
1153 |
#ifndef MODE32 |
1154 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].timestamp = highest + 1; |
1155 |
#endif |
1156 |
|
1157 |
/* Add the new translation to the table: */ |
1158 |
#ifdef DYNTRANS_ALPHA |
1159 |
a = (vaddr_page >> ALPHA_LEVEL0_SHIFT) & (ALPHA_LEVEL0 - 1); |
1160 |
b = (vaddr_page >> ALPHA_LEVEL1_SHIFT) & (ALPHA_LEVEL1 - 1); |
1161 |
if ((vaddr_page >> ALPHA_TOPSHIFT) == ALPHA_TOP_KERNEL) { |
1162 |
vph_p = cpu->cd.alpha.vph_table0_kernel[a]; |
1163 |
kernel = 1; |
1164 |
} else |
1165 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
1166 |
if (vph_p == cpu->cd.alpha.vph_default_page) { |
1167 |
if (cpu->cd.alpha.vph_next_free_page != NULL) { |
1168 |
if (kernel) |
1169 |
vph_p = cpu->cd.alpha.vph_table0_kernel |
1170 |
[a] = cpu->cd.alpha. |
1171 |
vph_next_free_page; |
1172 |
else |
1173 |
vph_p = cpu->cd.alpha.vph_table0[a] = |
1174 |
cpu->cd.alpha.vph_next_free_page; |
1175 |
cpu->cd.alpha.vph_next_free_page = vph_p->next; |
1176 |
} else { |
1177 |
if (kernel) |
1178 |
vph_p = cpu->cd.alpha.vph_table0_kernel |
1179 |
[a] = malloc(sizeof(struct |
1180 |
alpha_vph_page)); |
1181 |
else |
1182 |
vph_p = cpu->cd.alpha.vph_table0[a] = |
1183 |
malloc(sizeof(struct |
1184 |
alpha_vph_page)); |
1185 |
memset(vph_p, 0, sizeof(struct alpha_vph_page)); |
1186 |
} |
1187 |
} |
1188 |
vph_p->refcount ++; |
1189 |
vph_p->host_load[b] = host_page; |
1190 |
vph_p->host_store[b] = writeflag? host_page : NULL; |
1191 |
vph_p->phys_addr[b] = paddr_page; |
1192 |
vph_p->phys_page[b] = NULL; |
1193 |
#else |
1194 |
#ifdef MODE32 |
1195 |
index = DYNTRANS_ADDR_TO_PAGENR(vaddr_page); |
1196 |
cpu->cd.DYNTRANS_ARCH.host_load[index] = host_page; |
1197 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = |
1198 |
writeflag? host_page : NULL; |
1199 |
cpu->cd.DYNTRANS_ARCH.phys_addr[index] = paddr_page; |
1200 |
cpu->cd.DYNTRANS_ARCH.phys_page[index] = NULL; |
1201 |
cpu->cd.DYNTRANS_ARCH.vaddr_to_tlbindex[index] = r + 1; |
1202 |
#ifdef DYNTRANS_ARM |
1203 |
if (useraccess) |
1204 |
cpu->cd.DYNTRANS_ARCH.is_userpage[index >> 5] |
1205 |
|= 1 << (index & 31); |
1206 |
#endif |
1207 |
#endif /* 32 */ |
1208 |
#endif /* !ALPHA */ |
1209 |
} else { |
1210 |
/* |
1211 |
* The translation was already in the TLB. |
1212 |
* Writeflag = 0: Do nothing. |
1213 |
* Writeflag = 1: Make sure the page is writable. |
1214 |
* Writeflag = MEM_DOWNGRADE: Downgrade to readonly. |
1215 |
*/ |
1216 |
r = found; |
1217 |
#ifndef MODE32 |
1218 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].timestamp = highest + 1; |
1219 |
#endif |
1220 |
if (writeflag & MEM_WRITE) |
1221 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].writeflag = 1; |
1222 |
if (writeflag & MEM_DOWNGRADE) |
1223 |
cpu->cd.DYNTRANS_ARCH.vph_tlb_entry[r].writeflag = 0; |
1224 |
#ifdef DYNTRANS_ALPHA |
1225 |
a = (vaddr_page >> ALPHA_LEVEL0_SHIFT) & (ALPHA_LEVEL0 - 1); |
1226 |
b = (vaddr_page >> ALPHA_LEVEL1_SHIFT) & (ALPHA_LEVEL1 - 1); |
1227 |
if ((vaddr_page >> ALPHA_TOPSHIFT) == ALPHA_TOP_KERNEL) { |
1228 |
vph_p = cpu->cd.alpha.vph_table0_kernel[a]; |
1229 |
kernel = 1; |
1230 |
} else |
1231 |
vph_p = cpu->cd.alpha.vph_table0[a]; |
1232 |
vph_p->phys_page[b] = NULL; |
1233 |
if (vph_p->phys_addr[b] == paddr_page) { |
1234 |
if (writeflag & MEM_WRITE) |
1235 |
vph_p->host_store[b] = host_page; |
1236 |
if (writeflag & MEM_DOWNGRADE) |
1237 |
vph_p->host_store[b] = NULL; |
1238 |
} else { |
1239 |
/* Change the entire physical/host mapping: */ |
1240 |
vph_p->host_load[b] = host_page; |
1241 |
vph_p->host_store[b] = writeflag? host_page : NULL; |
1242 |
vph_p->phys_addr[b] = paddr_page; |
1243 |
} |
1244 |
#else |
1245 |
#ifdef MODE32 |
1246 |
index = DYNTRANS_ADDR_TO_PAGENR(vaddr_page); |
1247 |
cpu->cd.DYNTRANS_ARCH.phys_page[index] = NULL; |
1248 |
#ifdef DYNTRANS_ARM |
1249 |
cpu->cd.DYNTRANS_ARCH.is_userpage[index>>5] &= ~(1<<(index&31)); |
1250 |
if (useraccess) |
1251 |
cpu->cd.DYNTRANS_ARCH.is_userpage[index >> 5] |
1252 |
|= 1 << (index & 31); |
1253 |
#endif |
1254 |
if (cpu->cd.DYNTRANS_ARCH.phys_addr[index] == paddr_page) { |
1255 |
if (writeflag & MEM_WRITE) |
1256 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = |
1257 |
host_page; |
1258 |
if (writeflag & MEM_DOWNGRADE) |
1259 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = NULL; |
1260 |
} else { |
1261 |
/* Change the entire physical/host mapping: */ |
1262 |
cpu->cd.DYNTRANS_ARCH.host_load[index] = host_page; |
1263 |
cpu->cd.DYNTRANS_ARCH.host_store[index] = |
1264 |
writeflag? host_page : NULL; |
1265 |
cpu->cd.DYNTRANS_ARCH.phys_addr[index] = paddr_page; |
1266 |
} |
1267 |
#endif /* 32 */ |
1268 |
#endif /* !ALPHA */ |
1269 |
} |
1270 |
} |
1271 |
#endif /* DYNTRANS_UPDATE_TRANSLATION_TABLE */ |
1272 |
|
1273 |
|
1274 |
/*****************************************************************************/ |
1275 |
|
1276 |
|
1277 |
#ifdef DYNTRANS_TO_BE_TRANSLATED_HEAD |
1278 |
/* |
1279 |
* Check for breakpoints. |
1280 |
*/ |
1281 |
if (!single_step_breakpoint) { |
1282 |
#ifdef MODE32 |
1283 |
uint32_t curpc = cpu->pc; |
1284 |
#else |
1285 |
uint64_t curpc = cpu->pc; |
1286 |
#endif |
1287 |
int i; |
1288 |
for (i=0; i<cpu->machine->n_breakpoints; i++) |
1289 |
if (curpc == |
1290 |
#ifdef MODE32 |
1291 |
(uint32_t) |
1292 |
#endif |
1293 |
cpu->machine->breakpoint_addr[i]) { |
1294 |
if (!cpu->machine->instruction_trace) { |
1295 |
int old_quiet_mode = quiet_mode; |
1296 |
quiet_mode = 0; |
1297 |
DISASSEMBLE(cpu, ib, 1, 0, 0); |
1298 |
quiet_mode = old_quiet_mode; |
1299 |
} |
1300 |
fatal("BREAKPOINT: pc = 0x%llx\n(The " |
1301 |
"instruction has not yet executed.)\n", |
1302 |
(long long)cpu->pc); |
1303 |
single_step_breakpoint = 1; |
1304 |
single_step = 1; |
1305 |
goto stop_running_translated; |
1306 |
} |
1307 |
} |
1308 |
#endif /* DYNTRANS_TO_BE_TRANSLATED_HEAD */ |
1309 |
|
1310 |
|
1311 |
/*****************************************************************************/ |
1312 |
|
1313 |
|
1314 |
#ifdef DYNTRANS_TO_BE_TRANSLATED_TAIL |
1315 |
/* |
1316 |
* If we end up here, then an instruction was translated. |
1317 |
* Mark the page as containing a translation. |
1318 |
* |
1319 |
* (Special case for 32-bit mode: set the corresponding bit in the |
1320 |
* phystranslation[] array.) |
1321 |
*/ |
1322 |
#ifdef MODE32 |
1323 |
if (!(cpu->cd.DYNTRANS_ARCH.cur_physpage->flags & TRANSLATIONS)) { |
1324 |
uint32_t index = DYNTRANS_ADDR_TO_PAGENR(addr); |
1325 |
cpu->cd.DYNTRANS_ARCH.phystranslation[index >> 5] |= |
1326 |
(1 << (index & 31)); |
1327 |
} |
1328 |
#endif |
1329 |
cpu->cd.DYNTRANS_ARCH.cur_physpage->flags |= TRANSLATIONS; |
1330 |
|
1331 |
|
1332 |
/* |
1333 |
* Now it is time to check for combinations of instructions that can |
1334 |
* be converted into a single function call. |
1335 |
* |
1336 |
* Note: Single-stepping or instruction tracing doesn't work with |
1337 |
* instruction combination. |
1338 |
*/ |
1339 |
if (!single_step && !cpu->machine->instruction_trace) { |
1340 |
if (cpu->cd.DYNTRANS_ARCH.combination_check != NULL && |
1341 |
cpu->machine->speed_tricks) |
1342 |
cpu->cd.DYNTRANS_ARCH.combination_check(cpu, ic, |
1343 |
addr & (DYNTRANS_PAGESIZE - 1)); |
1344 |
cpu->cd.DYNTRANS_ARCH.combination_check = NULL; |
1345 |
} |
1346 |
|
1347 |
/* ... and finally execute the translated instruction: */ |
1348 |
if (single_step_breakpoint) { |
1349 |
/* |
1350 |
* Special case when single-stepping: Execute the translated |
1351 |
* instruction, but then replace it with a "to be translated" |
1352 |
* directly afterwards. |
1353 |
*/ |
1354 |
single_step_breakpoint = 0; |
1355 |
ic->f(cpu, ic); |
1356 |
ic->f = |
1357 |
#ifdef DYNTRANS_DUALMODE_32 |
1358 |
cpu->is_32bit? instr32(to_be_translated) : |
1359 |
#endif |
1360 |
instr(to_be_translated); |
1361 |
} else |
1362 |
ic->f(cpu, ic); |
1363 |
|
1364 |
return; |
1365 |
|
1366 |
|
1367 |
bad: /* |
1368 |
* Nothing was translated. (Unimplemented or illegal instruction.) |
1369 |
*/ |
1370 |
|
1371 |
quiet_mode = 0; |
1372 |
fatal("to_be_translated(): TODO: unimplemented instruction"); |
1373 |
|
1374 |
if (cpu->machine->instruction_trace) |
1375 |
#ifdef MODE32 |
1376 |
fatal(" at 0x%x\n", (int)cpu->pc); |
1377 |
#else |
1378 |
fatal(" at 0x%llx\n", (long long)cpu->pc); |
1379 |
#endif |
1380 |
else { |
1381 |
fatal(":\n"); |
1382 |
DISASSEMBLE(cpu, ib, 1, 0, 0); |
1383 |
} |
1384 |
|
1385 |
cpu->running = 0; |
1386 |
cpu->dead = 1; |
1387 |
stop_running_translated: |
1388 |
debugger_n_steps_left_before_interaction = 0; |
1389 |
cpu->running_translated = 0; |
1390 |
ic = cpu->cd.DYNTRANS_ARCH.next_ic = ¬hing_call; |
1391 |
cpu->cd.DYNTRANS_ARCH.next_ic ++; |
1392 |
|
1393 |
/* Execute the "nothing" instruction: */ |
1394 |
ic->f(cpu, ic); |
1395 |
#endif /* DYNTRANS_TO_BE_TRANSLATED_TAIL */ |
1396 |
|