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-rw-r--r--target-alpha/helper.c454
1 files changed, 454 insertions, 0 deletions
diff --git a/target-alpha/helper.c b/target-alpha/helper.c
new file mode 100644
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--- /dev/null
+++ b/target-alpha/helper.c
@@ -0,0 +1,454 @@
+/*
+ * Alpha emulation cpu helpers for qemu.
+ *
+ * Copyright (c) 2007 Jocelyn Mayer
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "cpu.h"
+#include "exec-all.h"
+
+#if defined(CONFIG_USER_ONLY)
+
+int cpu_alpha_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
+ int is_user, int is_softmmu)
+{
+ if (rw == 2)
+ env->exception_index = EXCP_ITB_MISS;
+ else
+ env->exception_index = EXCP_DFAULT;
+ env->ipr[IPR_EXC_ADDR] = address;
+
+ return 1;
+}
+
+target_ulong cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
+{
+ return addr;
+}
+
+void do_interrupt (CPUState *env)
+{
+ env->exception_index = -1;
+}
+
+#else
+
+target_ulong cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
+{
+ return -1;
+}
+
+int cpu_alpha_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
+ int is_user, int is_softmmu)
+{
+ uint32_t opc;
+
+ if (rw == 2) {
+ /* Instruction translation buffer miss */
+ env->exception_index = EXCP_ITB_MISS;
+ } else {
+ if (env->ipr[IPR_EXC_ADDR] & 1)
+ env->exception_index = EXCP_DTB_MISS_PAL;
+ else
+ env->exception_index = EXCP_DTB_MISS_NATIVE;
+ opc = (ldl_code(env->pc) >> 21) << 4;
+ if (rw) {
+ opc |= 0x9;
+ } else {
+ opc |= 0x4;
+ }
+ env->ipr[IPR_MM_STAT] = opc;
+ }
+
+ return 1;
+}
+
+int cpu_alpha_mfpr (CPUState *env, int iprn, uint64_t *valp)
+{
+ uint64_t hwpcb;
+ int ret = 0;
+
+ hwpcb = env->ipr[IPR_PCBB];
+ switch (iprn) {
+ case IPR_ASN:
+ if (env->features & FEATURE_ASN)
+ *valp = env->ipr[IPR_ASN];
+ else
+ *valp = 0;
+ break;
+ case IPR_ASTEN:
+ *valp = ((int64_t)(env->ipr[IPR_ASTEN] << 60)) >> 60;
+ break;
+ case IPR_ASTSR:
+ *valp = ((int64_t)(env->ipr[IPR_ASTSR] << 60)) >> 60;
+ break;
+ case IPR_DATFX:
+ /* Write only */
+ ret = -1;
+ break;
+ case IPR_ESP:
+ if (env->features & FEATURE_SPS)
+ *valp = env->ipr[IPR_ESP];
+ else
+ *valp = ldq_raw(hwpcb + 8);
+ break;
+ case IPR_FEN:
+ *valp = ((int64_t)(env->ipr[IPR_FEN] << 63)) >> 63;
+ break;
+ case IPR_IPIR:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_IPL:
+ *valp = ((int64_t)(env->ipr[IPR_IPL] << 59)) >> 59;
+ break;
+ case IPR_KSP:
+ if (!(env->ipr[IPR_EXC_ADDR] & 1)) {
+ ret = -1;
+ } else {
+ if (env->features & FEATURE_SPS)
+ *valp = env->ipr[IPR_KSP];
+ else
+ *valp = ldq_raw(hwpcb + 0);
+ }
+ break;
+ case IPR_MCES:
+ *valp = ((int64_t)(env->ipr[IPR_MCES] << 59)) >> 59;
+ break;
+ case IPR_PERFMON:
+ /* Implementation specific */
+ *valp = 0;
+ break;
+ case IPR_PCBB:
+ *valp = ((int64_t)env->ipr[IPR_PCBB] << 16) >> 16;
+ break;
+ case IPR_PRBR:
+ *valp = env->ipr[IPR_PRBR];
+ break;
+ case IPR_PTBR:
+ *valp = env->ipr[IPR_PTBR];
+ break;
+ case IPR_SCBB:
+ *valp = (int64_t)((int32_t)env->ipr[IPR_SCBB]);
+ break;
+ case IPR_SIRR:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_SISR:
+ *valp = (int64_t)((int16_t)env->ipr[IPR_SISR]);
+ case IPR_SSP:
+ if (env->features & FEATURE_SPS)
+ *valp = env->ipr[IPR_SSP];
+ else
+ *valp = ldq_raw(hwpcb + 16);
+ break;
+ case IPR_SYSPTBR:
+ if (env->features & FEATURE_VIRBND)
+ *valp = env->ipr[IPR_SYSPTBR];
+ else
+ ret = -1;
+ break;
+ case IPR_TBCHK:
+ if ((env->features & FEATURE_TBCHK)) {
+ /* XXX: TODO */
+ *valp = 0;
+ ret = -1;
+ } else {
+ ret = -1;
+ }
+ break;
+ case IPR_TBIA:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_TBIAP:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_TBIS:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_TBISD:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_TBISI:
+ /* Write-only */
+ ret = -1;
+ break;
+ case IPR_USP:
+ if (env->features & FEATURE_SPS)
+ *valp = env->ipr[IPR_USP];
+ else
+ *valp = ldq_raw(hwpcb + 24);
+ break;
+ case IPR_VIRBND:
+ if (env->features & FEATURE_VIRBND)
+ *valp = env->ipr[IPR_VIRBND];
+ else
+ ret = -1;
+ break;
+ case IPR_VPTB:
+ *valp = env->ipr[IPR_VPTB];
+ break;
+ case IPR_WHAMI:
+ *valp = env->ipr[IPR_WHAMI];
+ break;
+ default:
+ /* Invalid */
+ ret = -1;
+ break;
+ }
+
+ return ret;
+}
+
+int cpu_alpha_mtpr (CPUState *env, int iprn, uint64_t val, uint64_t *oldvalp)
+{
+ uint64_t hwpcb, tmp64;
+ uint8_t tmp8;
+ int ret = 0;
+
+ hwpcb = env->ipr[IPR_PCBB];
+ switch (iprn) {
+ case IPR_ASN:
+ /* Read-only */
+ ret = -1;
+ break;
+ case IPR_ASTEN:
+ tmp8 = ((int8_t)(env->ipr[IPR_ASTEN] << 4)) >> 4;
+ *oldvalp = tmp8;
+ tmp8 &= val & 0xF;
+ tmp8 |= (val >> 4) & 0xF;
+ env->ipr[IPR_ASTEN] &= ~0xF;
+ env->ipr[IPR_ASTEN] |= tmp8;
+ ret = 1;
+ break;
+ case IPR_ASTSR:
+ tmp8 = ((int8_t)(env->ipr[IPR_ASTSR] << 4)) >> 4;
+ *oldvalp = tmp8;
+ tmp8 &= val & 0xF;
+ tmp8 |= (val >> 4) & 0xF;
+ env->ipr[IPR_ASTSR] &= ~0xF;
+ env->ipr[IPR_ASTSR] |= tmp8;
+ ret = 1;
+ case IPR_DATFX:
+ env->ipr[IPR_DATFX] &= ~0x1;
+ env->ipr[IPR_DATFX] |= val & 1;
+ tmp64 = ldq_raw(hwpcb + 56);
+ tmp64 &= ~0x8000000000000000ULL;
+ tmp64 |= (val & 1) << 63;
+ stq_raw(hwpcb + 56, tmp64);
+ break;
+ case IPR_ESP:
+ if (env->features & FEATURE_SPS)
+ env->ipr[IPR_ESP] = val;
+ else
+ stq_raw(hwpcb + 8, val);
+ break;
+ case IPR_FEN:
+ env->ipr[IPR_FEN] = val & 1;
+ tmp64 = ldq_raw(hwpcb + 56);
+ tmp64 &= ~1;
+ tmp64 |= val & 1;
+ stq_raw(hwpcb + 56, tmp64);
+ break;
+ case IPR_IPIR:
+ /* XXX: TODO: Send IRQ to CPU #ir[16] */
+ break;
+ case IPR_IPL:
+ *oldvalp = ((int64_t)(env->ipr[IPR_IPL] << 59)) >> 59;
+ env->ipr[IPR_IPL] &= ~0x1F;
+ env->ipr[IPR_IPL] |= val & 0x1F;
+ /* XXX: may issue an interrupt or ASR _now_ */
+ ret = 1;
+ break;
+ case IPR_KSP:
+ if (!(env->ipr[IPR_EXC_ADDR] & 1)) {
+ ret = -1;
+ } else {
+ if (env->features & FEATURE_SPS)
+ env->ipr[IPR_KSP] = val;
+ else
+ stq_raw(hwpcb + 0, val);
+ }
+ break;
+ case IPR_MCES:
+ env->ipr[IPR_MCES] &= ~((val & 0x7) | 0x18);
+ env->ipr[IPR_MCES] |= val & 0x18;
+ break;
+ case IPR_PERFMON:
+ /* Implementation specific */
+ *oldvalp = 0;
+ ret = 1;
+ break;
+ case IPR_PCBB:
+ /* Read-only */
+ ret = -1;
+ break;
+ case IPR_PRBR:
+ env->ipr[IPR_PRBR] = val;
+ break;
+ case IPR_PTBR:
+ /* Read-only */
+ ret = -1;
+ break;
+ case IPR_SCBB:
+ env->ipr[IPR_SCBB] = (uint32_t)val;
+ break;
+ case IPR_SIRR:
+ if (val & 0xF) {
+ env->ipr[IPR_SISR] |= 1 << (val & 0xF);
+ /* XXX: request a software interrupt _now_ */
+ }
+ break;
+ case IPR_SISR:
+ /* Read-only */
+ ret = -1;
+ break;
+ case IPR_SSP:
+ if (env->features & FEATURE_SPS)
+ env->ipr[IPR_SSP] = val;
+ else
+ stq_raw(hwpcb + 16, val);
+ break;
+ case IPR_SYSPTBR:
+ if (env->features & FEATURE_VIRBND)
+ env->ipr[IPR_SYSPTBR] = val;
+ else
+ ret = -1;
+ case IPR_TBCHK:
+ /* Read-only */
+ ret = -1;
+ break;
+ case IPR_TBIA:
+ tlb_flush(env, 1);
+ break;
+ case IPR_TBIAP:
+ tlb_flush(env, 1);
+ break;
+ case IPR_TBIS:
+ tlb_flush_page(env, val);
+ break;
+ case IPR_TBISD:
+ tlb_flush_page(env, val);
+ break;
+ case IPR_TBISI:
+ tlb_flush_page(env, val);
+ break;
+ case IPR_USP:
+ if (env->features & FEATURE_SPS)
+ env->ipr[IPR_USP] = val;
+ else
+ stq_raw(hwpcb + 24, val);
+ break;
+ case IPR_VIRBND:
+ if (env->features & FEATURE_VIRBND)
+ env->ipr[IPR_VIRBND] = val;
+ else
+ ret = -1;
+ break;
+ case IPR_VPTB:
+ env->ipr[IPR_VPTB] = val;
+ break;
+ case IPR_WHAMI:
+ /* Read-only */
+ ret = -1;
+ break;
+ default:
+ /* Invalid */
+ ret = -1;
+ break;
+ }
+
+ return ret;
+}
+
+void do_interrupt (CPUState *env)
+{
+ int excp;
+
+ env->ipr[IPR_EXC_ADDR] = env->pc | 1;
+ excp = env->exception_index;
+ env->exception_index = 0;
+ env->error_code = 0;
+ /* XXX: disable interrupts and memory mapping */
+ if (env->ipr[IPR_PAL_BASE] != -1ULL) {
+ /* We use native PALcode */
+ env->pc = env->ipr[IPR_PAL_BASE] + excp;
+ } else {
+ /* We use emulated PALcode */
+ call_pal(env);
+ /* Emulate REI */
+ env->pc = env->ipr[IPR_EXC_ADDR] & ~7;
+ env->ipr[IPR_EXC_ADDR] = env->ipr[IPR_EXC_ADDR] & 1;
+ /* XXX: re-enable interrupts and memory mapping */
+ }
+}
+#endif
+
+void cpu_dump_state (CPUState *env, FILE *f,
+ int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
+ int flags)
+{
+ static unsigned char *linux_reg_names[] = {
+ "v0 ", "t0 ", "t1 ", "t2 ", "t3 ", "t4 ", "t5 ", "t6 ",
+ "t7 ", "s0 ", "s1 ", "s2 ", "s3 ", "s4 ", "s5 ", "fp ",
+ "a0 ", "a1 ", "a2 ", "a3 ", "a4 ", "a5 ", "t8 ", "t9 ",
+ "t10", "t11", "ra ", "t12", "at ", "gp ", "sp ", "zero",
+ };
+ int i;
+
+ cpu_fprintf(f, " PC " TARGET_FMT_lx " PS " TARGET_FMT_lx "\n",
+ env->pc, env->ps);
+ for (i = 0; i < 31; i++) {
+ cpu_fprintf(f, "IR%02d %s " TARGET_FMT_lx " ", i,
+ linux_reg_names[i], env->ir[i]);
+ if ((i % 3) == 2)
+ cpu_fprintf(f, "\n");
+ }
+ cpu_fprintf(f, "\n");
+ for (i = 0; i < 31; i++) {
+ cpu_fprintf(f, "FIR%02d " TARGET_FMT_lx " ", i,
+ *((uint64_t *)(&env->fir[i])));
+ if ((i % 3) == 2)
+ cpu_fprintf(f, "\n");
+ }
+ cpu_fprintf(f, "FT " TARGET_FMT_lx " " TARGET_FMT_lx " " TARGET_FMT_lx,
+ *((uint64_t *)(&env->ft0)), *((uint64_t *)(&env->ft1)),
+ *((uint64_t *)(&env->ft2)));
+ cpu_fprintf(f, "\nMEM " TARGET_FMT_lx " %d %d\n",
+ ldq_raw(0x000000004007df60ULL),
+ (uint8_t *)(&env->ft0), (uint8_t *)(&env->fir[0]));
+}
+
+void cpu_dump_EA (target_ulong EA)
+{
+ FILE *f;
+
+ if (logfile)
+ f = logfile;
+ else
+ f = stdout;
+ fprintf(f, "Memory access at address " TARGET_FMT_lx "\n", EA);
+}
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