/* * Sparc32 interrupt helpers * * Copyright (c) 2003-2005 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ #include "cpu.h" #include "trace.h" #include "sysemu.h" //#define DEBUG_PCALL #ifdef DEBUG_PCALL static const char * const excp_names[0x80] = { [TT_TFAULT] = "Instruction Access Fault", [TT_ILL_INSN] = "Illegal Instruction", [TT_PRIV_INSN] = "Privileged Instruction", [TT_NFPU_INSN] = "FPU Disabled", [TT_WIN_OVF] = "Window Overflow", [TT_WIN_UNF] = "Window Underflow", [TT_UNALIGNED] = "Unaligned Memory Access", [TT_FP_EXCP] = "FPU Exception", [TT_DFAULT] = "Data Access Fault", [TT_TOVF] = "Tag Overflow", [TT_EXTINT | 0x1] = "External Interrupt 1", [TT_EXTINT | 0x2] = "External Interrupt 2", [TT_EXTINT | 0x3] = "External Interrupt 3", [TT_EXTINT | 0x4] = "External Interrupt 4", [TT_EXTINT | 0x5] = "External Interrupt 5", [TT_EXTINT | 0x6] = "External Interrupt 6", [TT_EXTINT | 0x7] = "External Interrupt 7", [TT_EXTINT | 0x8] = "External Interrupt 8", [TT_EXTINT | 0x9] = "External Interrupt 9", [TT_EXTINT | 0xa] = "External Interrupt 10", [TT_EXTINT | 0xb] = "External Interrupt 11", [TT_EXTINT | 0xc] = "External Interrupt 12", [TT_EXTINT | 0xd] = "External Interrupt 13", [TT_EXTINT | 0xe] = "External Interrupt 14", [TT_EXTINT | 0xf] = "External Interrupt 15", [TT_TOVF] = "Tag Overflow", [TT_CODE_ACCESS] = "Instruction Access Error", [TT_DATA_ACCESS] = "Data Access Error", [TT_DIV_ZERO] = "Division By Zero", [TT_NCP_INSN] = "Coprocessor Disabled", }; #endif void do_interrupt(CPUState *env) { int cwp, intno = env->exception_index; #ifdef DEBUG_PCALL if (qemu_loglevel_mask(CPU_LOG_INT)) { static int count; const char *name; if (intno < 0 || intno >= 0x100) { name = "Unknown"; } else if (intno >= 0x80) { name = "Trap Instruction"; } else { name = excp_names[intno]; if (!name) { name = "Unknown"; } } qemu_log("%6d: %s (v=%02x) pc=%08x npc=%08x SP=%08x\n", count, name, intno, env->pc, env->npc, env->regwptr[6]); log_cpu_state(env, 0); #if 0 { int i; uint8_t *ptr; qemu_log(" code="); ptr = (uint8_t *)env->pc; for (i = 0; i < 16; i++) { qemu_log(" %02x", ldub(ptr + i)); } qemu_log("\n"); } #endif count++; } #endif #if !defined(CONFIG_USER_ONLY) if (env->psret == 0) { if (env->exception_index == 0x80 && env->def->features & CPU_FEATURE_TA0_SHUTDOWN) { qemu_system_shutdown_request(); } else { cpu_abort(env, "Trap 0x%02x while interrupts disabled, Error state", env->exception_index); } return; } #endif env->psret = 0; cwp = cpu_cwp_dec(env, env->cwp - 1); cpu_set_cwp(env, cwp); env->regwptr[9] = env->pc; env->regwptr[10] = env->npc; env->psrps = env->psrs; env->psrs = 1; env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4); env->pc = env->tbr; env->npc = env->pc + 4; env->exception_index = -1; #if !defined(CONFIG_USER_ONLY) /* IRQ acknowledgment */ if ((intno & ~15) == TT_EXTINT && env->qemu_irq_ack != NULL) { env->qemu_irq_ack(env, env->irq_manager, intno); } #endif } #if !defined(CONFIG_USER_ONLY) static void leon3_cache_control_int(CPUState *env) { uint32_t state = 0; if (env->cache_control & CACHE_CTRL_IF) { /* Instruction cache state */ state = env->cache_control & CACHE_STATE_MASK; if (state == CACHE_ENABLED) { state = CACHE_FROZEN; trace_int_helper_icache_freeze(); } env->cache_control &= ~CACHE_STATE_MASK; env->cache_control |= state; } if (env->cache_control & CACHE_CTRL_DF) { /* Data cache state */ state = (env->cache_control >> 2) & CACHE_STATE_MASK; if (state == CACHE_ENABLED) { state = CACHE_FROZEN; trace_int_helper_dcache_freeze(); } env->cache_control &= ~(CACHE_STATE_MASK << 2); env->cache_control |= (state << 2); } } void leon3_irq_manager(CPUState *env, void *irq_manager, int intno) { leon3_irq_ack(irq_manager, intno); leon3_cache_control_int(env); } #endif