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authorGuan Xuetao <gxt@mprc.pku.edu.cn>2012-08-10 14:42:22 +0800
committerBlue Swirl <blauwirbel@gmail.com>2012-08-11 09:36:56 +0000
commit527d9979b401fea5588b202fab930d1565f13bb1 (patch)
treedf6539ea2d743210fe71eea49520d60005f65a4b
parent4f23a1e645d4bfba620a63ba2c54c1813bcbfb63 (diff)
downloadqemu-arm-527d9979b401fea5588b202fab930d1565f13bb1.tar.gz
unicore32-softmmu: Add coprocessor 0(sysctrl) and 1(ocd) instruction support
Coprocessor 0 is system control coprocessor, and we need get/set its contents. Also, all cache/tlb ops shoule be implemented here, but just ignored with no harm. Coprocessor 1 is OCD (on-chip-debugger), which is used for faked console, so we could output chars to this console without graphic card. TODO: curses display should be added lator for screen output. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
-rw-r--r--target-unicore32/helper.c185
-rw-r--r--target-unicore32/helper.h17
-rw-r--r--target-unicore32/translate.c80
3 files changed, 233 insertions, 49 deletions
diff --git a/target-unicore32/helper.c b/target-unicore32/helper.c
index 9b8ff06d5c..f9f1960817 100644
--- a/target-unicore32/helper.c
+++ b/target-unicore32/helper.c
@@ -14,6 +14,14 @@
#include "helper.h"
#include "host-utils.h"
+#undef DEBUG_UC32
+
+#ifdef DEBUG_UC32
+#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...) do {} while (0)
+#endif
+
CPUUniCore32State *uc32_cpu_init(const char *cpu_model)
{
UniCore32CPU *cpu;
@@ -45,6 +53,146 @@ uint32_t HELPER(clz)(uint32_t x)
return clz32(x);
}
+#ifndef CONFIG_USER_ONLY
+void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg,
+ uint32_t cop)
+{
+ /*
+ * movc pp.nn, rn, #imm9
+ * rn: UCOP_REG_D
+ * nn: UCOP_REG_N
+ * 1: sys control reg.
+ * 2: page table base reg.
+ * 3: data fault status reg.
+ * 4: insn fault status reg.
+ * 5: cache op. reg.
+ * 6: tlb op. reg.
+ * imm9: split UCOP_IMM10 with bit5 is 0
+ */
+ switch (creg) {
+ case 1:
+ if (cop != 0) {
+ goto unrecognized;
+ }
+ env->cp0.c1_sys = val;
+ break;
+ case 2:
+ if (cop != 0) {
+ goto unrecognized;
+ }
+ env->cp0.c2_base = val;
+ break;
+ case 3:
+ if (cop != 0) {
+ goto unrecognized;
+ }
+ env->cp0.c3_faultstatus = val;
+ break;
+ case 4:
+ if (cop != 0) {
+ goto unrecognized;
+ }
+ env->cp0.c4_faultaddr = val;
+ break;
+ case 5:
+ switch (cop) {
+ case 28:
+ DPRINTF("Invalidate Entire I&D cache\n");
+ return;
+ case 20:
+ DPRINTF("Invalidate Entire Icache\n");
+ return;
+ case 12:
+ DPRINTF("Invalidate Entire Dcache\n");
+ return;
+ case 10:
+ DPRINTF("Clean Entire Dcache\n");
+ return;
+ case 14:
+ DPRINTF("Flush Entire Dcache\n");
+ return;
+ case 13:
+ DPRINTF("Invalidate Dcache line\n");
+ return;
+ case 11:
+ DPRINTF("Clean Dcache line\n");
+ return;
+ case 15:
+ DPRINTF("Flush Dcache line\n");
+ return;
+ }
+ break;
+ case 6:
+ if ((cop <= 6) && (cop >= 2)) {
+ /* invalid all tlb */
+ tlb_flush(env, 1);
+ return;
+ }
+ break;
+ default:
+ goto unrecognized;
+ }
+ return;
+unrecognized:
+ DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
+ creg, cop);
+}
+
+uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop)
+{
+ /*
+ * movc rd, pp.nn, #imm9
+ * rd: UCOP_REG_D
+ * nn: UCOP_REG_N
+ * 0: cpuid and cachetype
+ * 1: sys control reg.
+ * 2: page table base reg.
+ * 3: data fault status reg.
+ * 4: insn fault status reg.
+ * imm9: split UCOP_IMM10 with bit5 is 0
+ */
+ switch (creg) {
+ case 0:
+ switch (cop) {
+ case 0:
+ return env->cp0.c0_cpuid;
+ case 1:
+ return env->cp0.c0_cachetype;
+ }
+ break;
+ case 1:
+ if (cop == 0) {
+ return env->cp0.c1_sys;
+ }
+ break;
+ case 2:
+ if (cop == 0) {
+ return env->cp0.c2_base;
+ }
+ break;
+ case 3:
+ if (cop == 0) {
+ return env->cp0.c3_faultstatus;
+ }
+ break;
+ case 4:
+ if (cop == 0) {
+ return env->cp0.c4_faultaddr;
+ }
+ break;
+ }
+ DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
+ creg, cop);
+ return 0;
+}
+
+void helper_cp1_putc(target_ulong x)
+{
+ /* TODO: curses display should be added here for screen output. */
+ DPRINTF("%c", x);
+}
+#endif
+
#ifdef CONFIG_USER_ONLY
void switch_mode(CPUUniCore32State *env, int mode)
{
@@ -66,43 +214,6 @@ int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address,
}
#endif
-/* These should probably raise undefined insn exceptions. */
-void HELPER(set_cp)(CPUUniCore32State *env, uint32_t insn, uint32_t val)
-{
- int op1 = (insn >> 8) & 0xf;
- cpu_abort(env, "cp%i insn %08x\n", op1, insn);
- return;
-}
-
-uint32_t HELPER(get_cp)(CPUUniCore32State *env, uint32_t insn)
-{
- int op1 = (insn >> 8) & 0xf;
- cpu_abort(env, "cp%i insn %08x\n", op1, insn);
- return 0;
-}
-
-void HELPER(set_cp0)(CPUUniCore32State *env, uint32_t insn, uint32_t val)
-{
- cpu_abort(env, "cp0 insn %08x\n", insn);
-}
-
-uint32_t HELPER(get_cp0)(CPUUniCore32State *env, uint32_t insn)
-{
- cpu_abort(env, "cp0 insn %08x\n", insn);
- return 0;
-}
-
-void HELPER(set_r29_banked)(CPUUniCore32State *env, uint32_t mode, uint32_t val)
-{
- cpu_abort(env, "banked r29 write\n");
-}
-
-uint32_t HELPER(get_r29_banked)(CPUUniCore32State *env, uint32_t mode)
-{
- cpu_abort(env, "banked r29 read\n");
- return 0;
-}
-
/* UniCore-F64 support. We follow the convention used for F64 instrunctions:
Single precition routines have a "s" suffix, double precision a
"d" suffix. */
diff --git a/target-unicore32/helper.h b/target-unicore32/helper.h
index 5a3b8a41ea..305318ae59 100644
--- a/target-unicore32/helper.h
+++ b/target-unicore32/helper.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010-2011 GUAN Xue-tao
+ * Copyright (C) 2010-2012 Guan Xuetao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -8,6 +8,12 @@
*/
#include "def-helper.h"
+#ifndef CONFIG_USER_ONLY
+DEF_HELPER_4(cp0_set, void, env, i32, i32, i32)
+DEF_HELPER_3(cp0_get, i32, env, i32, i32)
+DEF_HELPER_1(cp1_putc, void, i32)
+#endif
+
DEF_HELPER_1(clz, i32, i32)
DEF_HELPER_1(clo, i32, i32)
@@ -16,12 +22,6 @@ DEF_HELPER_1(exception, void, i32)
DEF_HELPER_2(asr_write, void, i32, i32)
DEF_HELPER_0(asr_read, i32)
-DEF_HELPER_3(set_cp0, void, env, i32, i32)
-DEF_HELPER_2(get_cp0, i32, env, i32)
-
-DEF_HELPER_3(set_cp, void, env, i32, i32)
-DEF_HELPER_2(get_cp, i32, env, i32)
-
DEF_HELPER_1(get_user_reg, i32, i32)
DEF_HELPER_2(set_user_reg, void, i32, i32)
@@ -38,9 +38,6 @@ DEF_HELPER_2(shr_cc, i32, i32, i32)
DEF_HELPER_2(sar_cc, i32, i32, i32)
DEF_HELPER_2(ror_cc, i32, i32, i32)
-DEF_HELPER_2(get_r29_banked, i32, env, i32)
-DEF_HELPER_3(set_r29_banked, void, env, i32, i32)
-
DEF_HELPER_1(ucf64_get_fpscr, i32, env)
DEF_HELPER_2(ucf64_set_fpscr, void, env, i32)
diff --git a/target-unicore32/translate.c b/target-unicore32/translate.c
index 9793d14c1b..e37d5becdf 100644
--- a/target-unicore32/translate.c
+++ b/target-unicore32/translate.c
@@ -1,7 +1,7 @@
/*
* UniCore32 translation
*
- * Copyright (C) 2010-2011 GUAN Xue-tao
+ * Copyright (C) 2010-2012 Guan Xuetao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -176,6 +176,73 @@ static void store_reg(DisasContext *s, int reg, TCGv var)
"Illegal UniCore32 instruction %x at line %d!", \
insn, __LINE__)
+#ifndef CONFIG_USER_ONLY
+static void disas_cp0_insn(CPUUniCore32State *env, DisasContext *s,
+ uint32_t insn)
+{
+ TCGv tmp, tmp2, tmp3;
+ if ((insn & 0xfe000000) == 0xe0000000) {
+ tmp2 = new_tmp();
+ tmp3 = new_tmp();
+ tcg_gen_movi_i32(tmp2, UCOP_REG_N);
+ tcg_gen_movi_i32(tmp3, UCOP_IMM10);
+ if (UCOP_SET_L) {
+ tmp = new_tmp();
+ gen_helper_cp0_get(tmp, cpu_env, tmp2, tmp3);
+ store_reg(s, UCOP_REG_D, tmp);
+ } else {
+ tmp = load_reg(s, UCOP_REG_D);
+ gen_helper_cp0_set(cpu_env, tmp, tmp2, tmp3);
+ dead_tmp(tmp);
+ }
+ dead_tmp(tmp2);
+ dead_tmp(tmp3);
+ return;
+ }
+ ILLEGAL;
+}
+
+static void disas_ocd_insn(CPUUniCore32State *env, DisasContext *s,
+ uint32_t insn)
+{
+ TCGv tmp;
+
+ if ((insn & 0xff003fff) == 0xe1000400) {
+ /*
+ * movc rd, pp.nn, #imm9
+ * rd: UCOP_REG_D
+ * nn: UCOP_REG_N (must be 0)
+ * imm9: 0
+ */
+ if (UCOP_REG_N == 0) {
+ tmp = new_tmp();
+ tcg_gen_movi_i32(tmp, 0);
+ store_reg(s, UCOP_REG_D, tmp);
+ return;
+ } else {
+ ILLEGAL;
+ }
+ }
+ if ((insn & 0xff003fff) == 0xe0000401) {
+ /*
+ * movc pp.nn, rn, #imm9
+ * rn: UCOP_REG_D
+ * nn: UCOP_REG_N (must be 1)
+ * imm9: 1
+ */
+ if (UCOP_REG_N == 1) {
+ tmp = load_reg(s, UCOP_REG_D);
+ gen_helper_cp1_putc(tmp);
+ dead_tmp(tmp);
+ return;
+ } else {
+ ILLEGAL;
+ }
+ }
+ ILLEGAL;
+}
+#endif
+
static inline void gen_set_asr(TCGv var, uint32_t mask)
{
TCGv tmp_mask = tcg_const_i32(mask);
@@ -1124,9 +1191,18 @@ static void gen_exception_return(DisasContext *s, TCGv pc)
s->is_jmp = DISAS_UPDATE;
}
-static void disas_coproc_insn(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+static void disas_coproc_insn(CPUUniCore32State *env, DisasContext *s,
+ uint32_t insn)
{
switch (UCOP_CPNUM) {
+#ifndef CONFIG_USER_ONLY
+ case 0:
+ disas_cp0_insn(env, s, insn);
+ break;
+ case 1:
+ disas_ocd_insn(env, s, insn);
+ break;
+#endif
case 2:
disas_ucf64_insn(env, s, insn);
break;