diff options
author | Blue Swirl <blauwirbel@gmail.com> | 2012-09-02 07:33:34 +0000 |
---|---|---|
committer | Alexander Graf <agraf@suse.de> | 2012-09-10 13:38:32 +0200 |
commit | 8ef7f78e190b3a34e167a31c9a8e43c813c7ff78 (patch) | |
tree | 3946f750c3f36428905417d93bb782ebb33b450f /target-s390x | |
parent | fc8d72c2d34afd6789e8c4374d275a5f69c603f1 (diff) | |
download | qemu-8ef7f78e190b3a34e167a31c9a8e43c813c7ff78.zip qemu-8ef7f78e190b3a34e167a31c9a8e43c813c7ff78.tar.gz qemu-8ef7f78e190b3a34e167a31c9a8e43c813c7ff78.tar.bz2 |
target-s390x: split memory access helpers
Move memory access helpers to mem_helper.c.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
[agraf: fold softmmu include ifdefs together]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-s390x')
-rw-r--r-- | target-s390x/Makefile.objs | 3 | ||||
-rw-r--r-- | target-s390x/mem_helper.c | 1190 | ||||
-rw-r--r-- | target-s390x/op_helper.c | 1159 |
3 files changed, 1193 insertions, 1159 deletions
diff --git a/target-s390x/Makefile.objs b/target-s390x/Makefile.objs index e8f66e9..b9b3061 100644 --- a/target-s390x/Makefile.objs +++ b/target-s390x/Makefile.objs @@ -1,5 +1,5 @@ obj-y += translate.o op_helper.o helper.o cpu.o interrupt.o -obj-y += int_helper.o fpu_helper.o cc_helper.o +obj-y += int_helper.o fpu_helper.o cc_helper.o mem_helper.o obj-$(CONFIG_SOFTMMU) += machine.o obj-$(CONFIG_KVM) += kvm.o @@ -7,3 +7,4 @@ $(obj)/op_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) $(obj)/int_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) $(obj)/fpu_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) $(obj)/cc_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) +$(obj)/mem_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c new file mode 100644 index 0000000..ba05e65 --- /dev/null +++ b/target-s390x/mem_helper.c @@ -0,0 +1,1190 @@ +/* + * S/390 memory access helper routines + * + * Copyright (c) 2009 Ulrich Hecht + * Copyright (c) 2009 Alexander Graf + * + * 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 "dyngen-exec.h" +#include "helper.h" + +/*****************************************************************************/ +/* Softmmu support */ +#if !defined(CONFIG_USER_ONLY) +#include "softmmu_exec.h" + +#define MMUSUFFIX _mmu + +#define SHIFT 0 +#include "softmmu_template.h" + +#define SHIFT 1 +#include "softmmu_template.h" + +#define SHIFT 2 +#include "softmmu_template.h" + +#define SHIFT 3 +#include "softmmu_template.h" + +/* try to fill the TLB and return an exception if error. If retaddr is + NULL, it means that the function was called in C code (i.e. not + from generated code or from helper.c) */ +/* XXX: fix it to restore all registers */ +void tlb_fill(CPUS390XState *env1, target_ulong addr, int is_write, int mmu_idx, + uintptr_t retaddr) +{ + TranslationBlock *tb; + CPUS390XState *saved_env; + int ret; + + saved_env = env; + env = env1; + ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx); + if (unlikely(ret != 0)) { + if (likely(retaddr)) { + /* now we have a real cpu fault */ + tb = tb_find_pc(retaddr); + if (likely(tb)) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, retaddr); + } + } + cpu_loop_exit(env); + } + env = saved_env; +} + +#endif + +/* #define DEBUG_HELPER */ +#ifdef DEBUG_HELPER +#define HELPER_LOG(x...) qemu_log(x) +#else +#define HELPER_LOG(x...) +#endif + +#ifndef CONFIG_USER_ONLY +static void mvc_fast_memset(CPUS390XState *env, uint32_t l, uint64_t dest, + uint8_t byte) +{ + target_phys_addr_t dest_phys; + target_phys_addr_t len = l; + void *dest_p; + uint64_t asc = env->psw.mask & PSW_MASK_ASC; + int flags; + + if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { + stb(dest, byte); + cpu_abort(env, "should never reach here"); + } + dest_phys |= dest & ~TARGET_PAGE_MASK; + + dest_p = cpu_physical_memory_map(dest_phys, &len, 1); + + memset(dest_p, byte, len); + + cpu_physical_memory_unmap(dest_p, 1, len, len); +} + +static void mvc_fast_memmove(CPUS390XState *env, uint32_t l, uint64_t dest, + uint64_t src) +{ + target_phys_addr_t dest_phys; + target_phys_addr_t src_phys; + target_phys_addr_t len = l; + void *dest_p; + void *src_p; + uint64_t asc = env->psw.mask & PSW_MASK_ASC; + int flags; + + if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { + stb(dest, 0); + cpu_abort(env, "should never reach here"); + } + dest_phys |= dest & ~TARGET_PAGE_MASK; + + if (mmu_translate(env, src, 0, asc, &src_phys, &flags)) { + ldub(src); + cpu_abort(env, "should never reach here"); + } + src_phys |= src & ~TARGET_PAGE_MASK; + + dest_p = cpu_physical_memory_map(dest_phys, &len, 1); + src_p = cpu_physical_memory_map(src_phys, &len, 0); + + memmove(dest_p, src_p, len); + + cpu_physical_memory_unmap(dest_p, 1, len, len); + cpu_physical_memory_unmap(src_p, 0, len, len); +} +#endif + +/* and on array */ +uint32_t HELPER(nc)(uint32_t l, uint64_t dest, uint64_t src) +{ + int i; + unsigned char x; + uint32_t cc = 0; + + HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", + __func__, l, dest, src); + for (i = 0; i <= l; i++) { + x = ldub(dest + i) & ldub(src + i); + if (x) { + cc = 1; + } + stb(dest + i, x); + } + return cc; +} + +/* xor on array */ +uint32_t HELPER(xc)(uint32_t l, uint64_t dest, uint64_t src) +{ + int i; + unsigned char x; + uint32_t cc = 0; + + HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", + __func__, l, dest, src); + +#ifndef CONFIG_USER_ONLY + /* xor with itself is the same as memset(0) */ + if ((l > 32) && (src == dest) && + (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK)) { + mvc_fast_memset(env, l + 1, dest, 0); + return 0; + } +#else + if (src == dest) { + memset(g2h(dest), 0, l + 1); + return 0; + } +#endif + + for (i = 0; i <= l; i++) { + x = ldub(dest + i) ^ ldub(src + i); + if (x) { + cc = 1; + } + stb(dest + i, x); + } + return cc; +} + +/* or on array */ +uint32_t HELPER(oc)(uint32_t l, uint64_t dest, uint64_t src) +{ + int i; + unsigned char x; + uint32_t cc = 0; + + HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", + __func__, l, dest, src); + for (i = 0; i <= l; i++) { + x = ldub(dest + i) | ldub(src + i); + if (x) { + cc = 1; + } + stb(dest + i, x); + } + return cc; +} + +/* memmove */ +void HELPER(mvc)(uint32_t l, uint64_t dest, uint64_t src) +{ + int i = 0; + int x = 0; + uint32_t l_64 = (l + 1) / 8; + + HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", + __func__, l, dest, src); + +#ifndef CONFIG_USER_ONLY + if ((l > 32) && + (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK) && + (dest & TARGET_PAGE_MASK) == ((dest + l) & TARGET_PAGE_MASK)) { + if (dest == (src + 1)) { + mvc_fast_memset(env, l + 1, dest, ldub(src)); + return; + } else if ((src & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) { + mvc_fast_memmove(env, l + 1, dest, src); + return; + } + } +#else + if (dest == (src + 1)) { + memset(g2h(dest), ldub(src), l + 1); + return; + } else { + memmove(g2h(dest), g2h(src), l + 1); + return; + } +#endif + + /* handle the parts that fit into 8-byte loads/stores */ + if (dest != (src + 1)) { + for (i = 0; i < l_64; i++) { + stq(dest + x, ldq(src + x)); + x += 8; + } + } + + /* slow version crossing pages with byte accesses */ + for (i = x; i <= l; i++) { + stb(dest + i, ldub(src + i)); + } +} + +/* compare unsigned byte arrays */ +uint32_t HELPER(clc)(uint32_t l, uint64_t s1, uint64_t s2) +{ + int i; + unsigned char x, y; + uint32_t cc; + + HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n", + __func__, l, s1, s2); + for (i = 0; i <= l; i++) { + x = ldub(s1 + i); + y = ldub(s2 + i); + HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y); + if (x < y) { + cc = 1; + goto done; + } else if (x > y) { + cc = 2; + goto done; + } + } + cc = 0; + done: + HELPER_LOG("\n"); + return cc; +} + +/* compare logical under mask */ +uint32_t HELPER(clm)(uint32_t r1, uint32_t mask, uint64_t addr) +{ + uint8_t r, d; + uint32_t cc; + + HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1, + mask, addr); + cc = 0; + while (mask) { + if (mask & 8) { + d = ldub(addr); + r = (r1 & 0xff000000UL) >> 24; + HELPER_LOG("mask 0x%x %02x/%02x (0x%" PRIx64 ") ", mask, r, d, + addr); + if (r < d) { + cc = 1; + break; + } else if (r > d) { + cc = 2; + break; + } + addr++; + } + mask = (mask << 1) & 0xf; + r1 <<= 8; + } + HELPER_LOG("\n"); + return cc; +} + +/* store character under mask */ +void HELPER(stcm)(uint32_t r1, uint32_t mask, uint64_t addr) +{ + uint8_t r; + + HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%lx\n", __func__, r1, mask, + addr); + while (mask) { + if (mask & 8) { + r = (r1 & 0xff000000UL) >> 24; + stb(addr, r); + HELPER_LOG("mask 0x%x %02x (0x%lx) ", mask, r, addr); + addr++; + } + mask = (mask << 1) & 0xf; + r1 <<= 8; + } + HELPER_LOG("\n"); +} + +static inline uint64_t get_address(int x2, int b2, int d2) +{ + uint64_t r = d2; + + if (x2) { + r += env->regs[x2]; + } + + if (b2) { + r += env->regs[b2]; + } + + /* 31-Bit mode */ + if (!(env->psw.mask & PSW_MASK_64)) { + r &= 0x7fffffff; + } + + return r; +} + +static inline uint64_t get_address_31fix(int reg) +{ + uint64_t r = env->regs[reg]; + + /* 31-Bit mode */ + if (!(env->psw.mask & PSW_MASK_64)) { + r &= 0x7fffffff; + } + + return r; +} + +/* search string (c is byte to search, r2 is string, r1 end of string) */ +uint32_t HELPER(srst)(uint32_t c, uint32_t r1, uint32_t r2) +{ + uint64_t i; + uint32_t cc = 2; + uint64_t str = get_address_31fix(r2); + uint64_t end = get_address_31fix(r1); + + HELPER_LOG("%s: c %d *r1 0x%" PRIx64 " *r2 0x%" PRIx64 "\n", __func__, + c, env->regs[r1], env->regs[r2]); + + for (i = str; i != end; i++) { + if (ldub(i) == c) { + env->regs[r1] = i; + cc = 1; + break; + } + } + + return cc; +} + +/* unsigned string compare (c is string terminator) */ +uint32_t HELPER(clst)(uint32_t c, uint32_t r1, uint32_t r2) +{ + uint64_t s1 = get_address_31fix(r1); + uint64_t s2 = get_address_31fix(r2); + uint8_t v1, v2; + uint32_t cc; + + c = c & 0xff; +#ifdef CONFIG_USER_ONLY + if (!c) { + HELPER_LOG("%s: comparing '%s' and '%s'\n", + __func__, (char *)g2h(s1), (char *)g2h(s2)); + } +#endif + for (;;) { + v1 = ldub(s1); + v2 = ldub(s2); + if ((v1 == c || v2 == c) || (v1 != v2)) { + break; + } + s1++; + s2++; + } + + if (v1 == v2) { + cc = 0; + } else { + cc = (v1 < v2) ? 1 : 2; + /* FIXME: 31-bit mode! */ + env->regs[r1] = s1; + env->regs[r2] = s2; + } + return cc; +} + +/* move page */ +void HELPER(mvpg)(uint64_t r0, uint64_t r1, uint64_t r2) +{ + /* XXX missing r0 handling */ +#ifdef CONFIG_USER_ONLY + int i; + + for (i = 0; i < TARGET_PAGE_SIZE; i++) { + stb(r1 + i, ldub(r2 + i)); + } +#else + mvc_fast_memmove(env, TARGET_PAGE_SIZE, r1, r2); +#endif +} + +/* string copy (c is string terminator) */ +void HELPER(mvst)(uint32_t c, uint32_t r1, uint32_t r2) +{ + uint64_t dest = get_address_31fix(r1); + uint64_t src = get_address_31fix(r2); + uint8_t v; + + c = c & 0xff; +#ifdef CONFIG_USER_ONLY + if (!c) { + HELPER_LOG("%s: copy '%s' to 0x%lx\n", __func__, (char *)g2h(src), + dest); + } +#endif + for (;;) { + v = ldub(src); + stb(dest, v); + if (v == c) { + break; + } + src++; + dest++; + } + env->regs[r1] = dest; /* FIXME: 31-bit mode! */ +} + +/* compare and swap 64-bit */ +uint32_t HELPER(csg)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + /* FIXME: locking? */ + uint32_t cc; + uint64_t v2 = ldq(a2); + + if (env->regs[r1] == v2) { + cc = 0; + stq(a2, env->regs[r3]); + } else { + cc = 1; + env->regs[r1] = v2; + } + return cc; +} + +/* compare double and swap 64-bit */ +uint32_t HELPER(cdsg)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + /* FIXME: locking? */ + uint32_t cc; + uint64_t v2_hi = ldq(a2); + uint64_t v2_lo = ldq(a2 + 8); + uint64_t v1_hi = env->regs[r1]; + uint64_t v1_lo = env->regs[r1 + 1]; + + if ((v1_hi == v2_hi) && (v1_lo == v2_lo)) { + cc = 0; + stq(a2, env->regs[r3]); + stq(a2 + 8, env->regs[r3 + 1]); + } else { + cc = 1; + env->regs[r1] = v2_hi; + env->regs[r1 + 1] = v2_lo; + } + + return cc; +} + +/* compare and swap 32-bit */ +uint32_t HELPER(cs)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + /* FIXME: locking? */ + uint32_t cc; + uint32_t v2 = ldl(a2); + + HELPER_LOG("%s: r1 %d a2 0x%lx r3 %d\n", __func__, r1, a2, r3); + if (((uint32_t)env->regs[r1]) == v2) { + cc = 0; + stl(a2, (uint32_t)env->regs[r3]); + } else { + cc = 1; + env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | v2; + } + return cc; +} + +static uint32_t helper_icm(uint32_t r1, uint64_t address, uint32_t mask) +{ + int pos = 24; /* top of the lower half of r1 */ + uint64_t rmask = 0xff000000ULL; + uint8_t val = 0; + int ccd = 0; + uint32_t cc = 0; + + while (mask) { + if (mask & 8) { + env->regs[r1] &= ~rmask; + val = ldub(address); + if ((val & 0x80) && !ccd) { + cc = 1; + } + ccd = 1; + if (val && cc == 0) { + cc = 2; + } + env->regs[r1] |= (uint64_t)val << pos; + address++; + } + mask = (mask << 1) & 0xf; + pos -= 8; + rmask >>= 8; + } + + return cc; +} + +/* execute instruction + this instruction executes an insn modified with the contents of r1 + it does not change the executed instruction in memory + it does not change the program counter + in other words: tricky... + currently implemented by interpreting the cases it is most commonly used in +*/ +uint32_t HELPER(ex)(uint32_t cc, uint64_t v1, uint64_t addr, uint64_t ret) +{ + uint16_t insn = lduw_code(addr); + + HELPER_LOG("%s: v1 0x%lx addr 0x%lx insn 0x%x\n", __func__, v1, addr, + insn); + if ((insn & 0xf0ff) == 0xd000) { + uint32_t l, insn2, b1, b2, d1, d2; + + l = v1 & 0xff; + insn2 = ldl_code(addr + 2); + b1 = (insn2 >> 28) & 0xf; + b2 = (insn2 >> 12) & 0xf; + d1 = (insn2 >> 16) & 0xfff; + d2 = insn2 & 0xfff; + switch (insn & 0xf00) { + case 0x200: + helper_mvc(l, get_address(0, b1, d1), get_address(0, b2, d2)); + break; + case 0x500: + cc = helper_clc(l, get_address(0, b1, d1), get_address(0, b2, d2)); + break; + case 0x700: + cc = helper_xc(l, get_address(0, b1, d1), get_address(0, b2, d2)); + break; + case 0xc00: + helper_tr(l, get_address(0, b1, d1), get_address(0, b2, d2)); + break; + default: + goto abort; + break; + } + } else if ((insn & 0xff00) == 0x0a00) { + /* supervisor call */ + HELPER_LOG("%s: svc %ld via execute\n", __func__, (insn | v1) & 0xff); + env->psw.addr = ret - 4; + env->int_svc_code = (insn | v1) & 0xff; + env->int_svc_ilc = 4; + helper_exception(EXCP_SVC); + } else if ((insn & 0xff00) == 0xbf00) { + uint32_t insn2, r1, r3, b2, d2; + + insn2 = ldl_code(addr + 2); + r1 = (insn2 >> 20) & 0xf; + r3 = (insn2 >> 16) & 0xf; + b2 = (insn2 >> 12) & 0xf; + d2 = insn2 & 0xfff; + cc = helper_icm(r1, get_address(0, b2, d2), r3); + } else { + abort: + cpu_abort(env, "EXECUTE on instruction prefix 0x%x not implemented\n", + insn); + } + return cc; +} + +/* store character under mask high operates on the upper half of r1 */ +void HELPER(stcmh)(uint32_t r1, uint64_t address, uint32_t mask) +{ + int pos = 56; /* top of the upper half of r1 */ + + while (mask) { + if (mask & 8) { + stb(address, (env->regs[r1] >> pos) & 0xff); + address++; + } + mask = (mask << 1) & 0xf; + pos -= 8; + } +} + +/* insert character under mask high; same as icm, but operates on the + upper half of r1 */ +uint32_t HELPER(icmh)(uint32_t r1, uint64_t address, uint32_t mask) +{ + int pos = 56; /* top of the upper half of r1 */ + uint64_t rmask = 0xff00000000000000ULL; + uint8_t val = 0; + int ccd = 0; + uint32_t cc = 0; + + while (mask) { + if (mask & 8) { + env->regs[r1] &= ~rmask; + val = ldub(address); + if ((val & 0x80) && !ccd) { + cc = 1; + } + ccd = 1; + if (val && cc == 0) { + cc = 2; + } + env->regs[r1] |= (uint64_t)val << pos; + address++; + } + mask = (mask << 1) & 0xf; + pos -= 8; + rmask >>= 8; + } + + return cc; +} + +/* load access registers r1 to r3 from memory at a2 */ +void HELPER(lam)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + + for (i = r1;; i = (i + 1) % 16) { + env->aregs[i] = ldl(a2); + a2 += 4; + + if (i == r3) { + break; + } + } +} + +/* store access registers r1 to r3 in memory at a2 */ +void HELPER(stam)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + + for (i = r1;; i = (i + 1) % 16) { + stl(a2, env->aregs[i]); + a2 += 4; + + if (i == r3) { + break; + } + } +} + +/* move long */ +uint32_t HELPER(mvcl)(uint32_t r1, uint32_t r2) +{ + uint64_t destlen = env->regs[r1 + 1] & 0xffffff; + uint64_t dest = get_address_31fix(r1); + uint64_t srclen = env->regs[r2 + 1] & 0xffffff; + uint64_t src = get_address_31fix(r2); + uint8_t pad = src >> 24; + uint8_t v; + uint32_t cc; + + if (destlen == srclen) { + cc = 0; + } else if (destlen < srclen) { + cc = 1; + } else { + cc = 2; + } + + if (srclen > destlen) { + srclen = destlen; + } + + for (; destlen && srclen; src++, dest++, destlen--, srclen--) { + v = ldub(src); + stb(dest, v); + } + + for (; destlen; dest++, destlen--) { + stb(dest, pad); + } + + env->regs[r1 + 1] = destlen; + /* can't use srclen here, we trunc'ed it */ + env->regs[r2 + 1] -= src - env->regs[r2]; + env->regs[r1] = dest; + env->regs[r2] = src; + + return cc; +} + +/* move long extended another memcopy insn with more bells and whistles */ +uint32_t HELPER(mvcle)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + uint64_t destlen = env->regs[r1 + 1]; + uint64_t dest = env->regs[r1]; + uint64_t srclen = env->regs[r3 + 1]; + uint64_t src = env->regs[r3]; + uint8_t pad = a2 & 0xff; + uint8_t v; + uint32_t cc; + + if (!(env->psw.mask & PSW_MASK_64)) { + destlen = (uint32_t)destlen; + srclen = (uint32_t)srclen; + dest &= 0x7fffffff; + src &= 0x7fffffff; + } + + if (destlen == srclen) { + cc = 0; + } else if (destlen < srclen) { + cc = 1; + } else { + cc = 2; + } + + if (srclen > destlen) { + srclen = destlen; + } + + for (; destlen && srclen; src++, dest++, destlen--, srclen--) { + v = ldub(src); + stb(dest, v); + } + + for (; destlen; dest++, destlen--) { + stb(dest, pad); + } + + env->regs[r1 + 1] = destlen; + /* can't use srclen here, we trunc'ed it */ + /* FIXME: 31-bit mode! */ + env->regs[r3 + 1] -= src - env->regs[r3]; + env->regs[r1] = dest; + env->regs[r3] = src; + + return cc; +} + +/* compare logical long extended memcompare insn with padding */ +uint32_t HELPER(clcle)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + uint64_t destlen = env->regs[r1 + 1]; + uint64_t dest = get_address_31fix(r1); + uint64_t srclen = env->regs[r3 + 1]; + uint64_t src = get_address_31fix(r3); + uint8_t pad = a2 & 0xff; + uint8_t v1 = 0, v2 = 0; + uint32_t cc = 0; + + if (!(destlen || srclen)) { + return cc; + } + + if (srclen > destlen) { + srclen = destlen; + } + + for (; destlen || srclen; src++, dest++, destlen--, srclen--) { + v1 = srclen ? ldub(src) : pad; + v2 = destlen ? ldub(dest) : pad; + if (v1 != v2) { + cc = (v1 < v2) ? 1 : 2; + break; + } + } + + env->regs[r1 + 1] = destlen; + /* can't use srclen here, we trunc'ed it */ + env->regs[r3 + 1] -= src - env->regs[r3]; + env->regs[r1] = dest; + env->regs[r3] = src; + + return cc; +} + +/* checksum */ +void HELPER(cksm)(uint32_t r1, uint32_t r2) +{ + uint64_t src = get_address_31fix(r2); + uint64_t src_len = env->regs[(r2 + 1) & 15]; + uint64_t cksm = (uint32_t)env->regs[r1]; + + while (src_len >= 4) { + cksm += ldl(src); + + /* move to next word */ + src_len -= 4; + src += 4; + } + + switch (src_len) { + case 0: + break; + case 1: + cksm += ldub(src) << 24; + break; + case 2: + cksm += lduw(src) << 16; + break; + case 3: + cksm += lduw(src) << 16; + cksm += ldub(src + 2) << 8; + break; + } + + /* indicate we've processed everything */ + env->regs[r2] = src + src_len; + env->regs[(r2 + 1) & 15] = 0; + + /* store result */ + env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | + ((uint32_t)cksm + (cksm >> 32)); +} + +void HELPER(unpk)(uint32_t len, uint64_t dest, uint64_t src) +{ + int len_dest = len >> 4; + int len_src = len & 0xf; + uint8_t b; + int second_nibble = 0; + + dest += len_dest; + src += len_src; + + /* last byte is special, it only flips the nibbles */ + b = ldub(src); + stb(dest, (b << 4) | (b >> 4)); + src--; + len_src--; + + /* now pad every nibble with 0xf0 */ + + while (len_dest > 0) { + uint8_t cur_byte = 0; + + if (len_src > 0) { + cur_byte = ldub(src); + } + + len_dest--; + dest--; + + /* only advance one nibble at a time */ + if (second_nibble) { + cur_byte >>= 4; + len_src--; + src--; + } + second_nibble = !second_nibble; + + /* digit */ + cur_byte = (cur_byte & 0xf); + /* zone bits */ + cur_byte |= 0xf0; + + stb(dest, cur_byte); + } +} + +void HELPER(tr)(uint32_t len, uint64_t array, uint64_t trans) +{ + int i; + + for (i = 0; i <= len; i++) { + uint8_t byte = ldub(array + i); + uint8_t new_byte = ldub(trans + byte); + + stb(array + i, new_byte); + } +} + +#if !defined(CONFIG_USER_ONLY) +void HELPER(lctlg)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + uint64_t src = a2; + + for (i = r1;; i = (i + 1) % 16) { + env->cregs[i] = ldq(src); + HELPER_LOG("load ctl %d from 0x%" PRIx64 " == 0x%" PRIx64 "\n", + i, src, env->cregs[i]); + src += sizeof(uint64_t); + + if (i == r3) { + break; + } + } + + tlb_flush(env, 1); +} + +void HELPER(lctl)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + uint64_t src = a2; + + for (i = r1;; i = (i + 1) % 16) { + env->cregs[i] = (env->cregs[i] & 0xFFFFFFFF00000000ULL) | ldl(src); + src += sizeof(uint32_t); + + if (i == r3) { + break; + } + } + + tlb_flush(env, 1); +} + +void HELPER(stctg)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + uint64_t dest = a2; + + for (i = r1;; i = (i + 1) % 16) { + stq(dest, env->cregs[i]); + dest += sizeof(uint64_t); + + if (i == r3) { + break; + } + } +} + +void HELPER(stctl)(uint32_t r1, uint64_t a2, uint32_t r3) +{ + int i; + uint64_t dest = a2; + + for (i = r1;; i = (i + 1) % 16) { + stl(dest, env->cregs[i]); + dest += sizeof(uint32_t); + + if (i == r3) { + break; + } + } +} + +uint32_t HELPER(tprot)(uint64_t a1, uint64_t a2) +{ + /* XXX implement */ + + return 0; +} + +/* insert storage key extended */ +uint64_t HELPER(iske)(uint64_t r2) +{ + uint64_t addr = get_address(0, 0, r2); + + if (addr > ram_size) { + return 0; + } + + return env->storage_keys[addr / TARGET_PAGE_SIZE]; +} + +/* set storage key extended */ +void HELPER(sske)(uint32_t r1, uint64_t r2) +{ + uint64_t addr = get_address(0, 0, r2); + + if (addr > ram_size) { + return; + } + + env->storage_keys[addr / TARGET_PAGE_SIZE] = r1; +} + +/* reset reference bit extended */ +uint32_t HELPER(rrbe)(uint32_t r1, uint64_t r2) +{ + uint8_t re; + uint8_t key; + + if (r2 > ram_size) { + return 0; + } + + key = env->storage_keys[r2 / TARGET_PAGE_SIZE]; + re = key & (SK_R | SK_C); + env->storage_keys[r2 / TARGET_PAGE_SIZE] = (key & ~SK_R); + + /* + * cc + * + * 0 Reference bit zero; change bit zero + * 1 Reference bit zero; change bit one + * 2 Reference bit one; change bit zero + * 3 Reference bit one; change bit one + */ + + return re >> 1; +} + +/* compare and swap and purge */ +uint32_t HELPER(csp)(uint32_t r1, uint32_t r2) +{ + uint32_t cc; + uint32_t o1 = env->regs[r1]; + uint64_t a2 = get_address_31fix(r2) & ~3ULL; + uint32_t o2 = ldl(a2); + + if (o1 == o2) { + stl(a2, env->regs[(r1 + 1) & 15]); + if (env->regs[r2] & 0x3) { + /* flush TLB / ALB */ + tlb_flush(env, 1); + } + cc = 0; + } else { + env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | o2; + cc = 1; + } + + return cc; +} + +static uint32_t mvc_asc(int64_t l, uint64_t a1, uint64_t mode1, uint64_t a2, + uint64_t mode2) +{ + target_ulong src, dest; + int flags, cc = 0, i; + + if (!l) { + return 0; + } else if (l > 256) { + /* max 256 */ + l = 256; + cc = 3; + } + + if (mmu_translate(env, a1 & TARGET_PAGE_MASK, 1, mode1, &dest, &flags)) { + cpu_loop_exit(env); + } + dest |= a1 & ~TARGET_PAGE_MASK; + + if (mmu_translate(env, a2 & TARGET_PAGE_MASK, 0, mode2, &src, &flags)) { + cpu_loop_exit(env); + } + src |= a2 & ~TARGET_PAGE_MASK; + + /* XXX replace w/ memcpy */ + for (i = 0; i < l; i++) { + /* XXX be more clever */ + if ((((dest + i) & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) || + (((src + i) & TARGET_PAGE_MASK) != (src & TARGET_PAGE_MASK))) { + mvc_asc(l - i, a1 + i, mode1, a2 + i, mode2); + break; + } + stb_phys(dest + i, ldub_phys(src + i)); + } + + return cc; +} + +uint32_t HELPER(mvcs)(uint64_t l, uint64_t a1, uint64_t a2) +{ + HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", + __func__, l, a1, a2); + + return mvc_asc(l, a1, PSW_ASC_SECONDARY, a2, PSW_ASC_PRIMARY); +} + +uint32_t HELPER(mvcp)(uint64_t l, uint64_t a1, uint64_t a2) +{ + HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", + __func__, l, a1, a2); + + return mvc_asc(l, a1, PSW_ASC_PRIMARY, a2, PSW_ASC_SECONDARY); +} + +/* invalidate pte */ +void HELPER(ipte)(uint64_t pte_addr, uint64_t vaddr) +{ + uint64_t page = vaddr & TARGET_PAGE_MASK; + uint64_t pte = 0; + + /* XXX broadcast to other CPUs */ + + /* XXX Linux is nice enough to give us the exact pte address. + According to spec we'd have to find it out ourselves */ + /* XXX Linux is fine with overwriting the pte, the spec requires + us to only set the invalid bit */ + stq_phys(pte_addr, pte | _PAGE_INVALID); + + /* XXX we exploit the fact that Linux passes the exact virtual + address here - it's not obliged to! */ + tlb_flush_page(env, page); + + /* XXX 31-bit hack */ + if (page & 0x80000000) { + tlb_flush_page(env, page & ~0x80000000); + } else { + tlb_flush_page(env, page | 0x80000000); + } +} + +/* flush local tlb */ +void HELPER(ptlb)(void) +{ + tlb_flush(env, 1); +} + +/* store using real address */ +void HELPER(stura)(uint64_t addr, uint32_t v1) +{ + stw_phys(get_address(0, 0, addr), v1); +} + +/* load real address */ +uint32_t HELPER(lra)(uint64_t addr, uint32_t r1) +{ + uint32_t cc = 0; + int old_exc = env->exception_index; + uint64_t asc = env->psw.mask & PSW_MASK_ASC; + uint64_t ret; + int flags; + + /* XXX incomplete - has more corner cases */ + if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) { + program_interrupt(env, PGM_SPECIAL_OP, 2); + } + + env->exception_index = old_exc; + if (mmu_translate(env, addr, 0, asc, &ret, &flags)) { + cc = 3; + } + if (env->exception_index == EXCP_PGM) { + ret = env->int_pgm_code | 0x80000000; + } else { + ret |= addr & ~TARGET_PAGE_MASK; + } + env->exception_index = old_exc; + + if (!(env->psw.mask & PSW_MASK_64)) { + env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | + (ret & 0xffffffffULL); + } else { + env->regs[r1] = ret; + } + + return cc; +} + +#endif diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c index 3b8b997..bb8dbf5 100644 --- a/target-s390x/op_helper.c +++ b/target-s390x/op_helper.c @@ -32,57 +32,8 @@ #endif #if !defined(CONFIG_USER_ONLY) -#include "sysemu.h" -#endif - -/*****************************************************************************/ -/* Softmmu support */ -#if !defined(CONFIG_USER_ONLY) #include "softmmu_exec.h" - -#define MMUSUFFIX _mmu - -#define SHIFT 0 -#include "softmmu_template.h" - -#define SHIFT 1 -#include "softmmu_template.h" - -#define SHIFT 2 -#include "softmmu_template.h" - -#define SHIFT 3 -#include "softmmu_template.h" - -/* try to fill the TLB and return an exception if error. If retaddr is - NULL, it means that the function was called in C code (i.e. not - from generated code or from helper.c) */ -/* XXX: fix it to restore all registers */ -void tlb_fill(CPUS390XState *env1, target_ulong addr, int is_write, int mmu_idx, - uintptr_t retaddr) -{ - TranslationBlock *tb; - CPUS390XState *saved_env; - int ret; - - saved_env = env; - env = env1; - ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx); - if (unlikely(ret != 0)) { - if (likely(retaddr)) { - /* now we have a real cpu fault */ - tb = tb_find_pc(retaddr); - if (likely(tb)) { - /* the PC is inside the translated code. It means that we have - a virtual CPU fault */ - cpu_restore_state(tb, env, retaddr); - } - } - cpu_loop_exit(env); - } - env = saved_env; -} - +#include "sysemu.h" #endif /* #define DEBUG_HELPER */ @@ -101,840 +52,6 @@ void HELPER(exception)(uint32_t excp) } #ifndef CONFIG_USER_ONLY -static void mvc_fast_memset(CPUS390XState *env, uint32_t l, uint64_t dest, - uint8_t byte) -{ - target_phys_addr_t dest_phys; - target_phys_addr_t len = l; - void *dest_p; - uint64_t asc = env->psw.mask & PSW_MASK_ASC; - int flags; - - if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { - stb(dest, byte); - cpu_abort(env, "should never reach here"); - } - dest_phys |= dest & ~TARGET_PAGE_MASK; - - dest_p = cpu_physical_memory_map(dest_phys, &len, 1); - - memset(dest_p, byte, len); - - cpu_physical_memory_unmap(dest_p, 1, len, len); -} - -static void mvc_fast_memmove(CPUS390XState *env, uint32_t l, uint64_t dest, - uint64_t src) -{ - target_phys_addr_t dest_phys; - target_phys_addr_t src_phys; - target_phys_addr_t len = l; - void *dest_p; - void *src_p; - uint64_t asc = env->psw.mask & PSW_MASK_ASC; - int flags; - - if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { - stb(dest, 0); - cpu_abort(env, "should never reach here"); - } - dest_phys |= dest & ~TARGET_PAGE_MASK; - - if (mmu_translate(env, src, 0, asc, &src_phys, &flags)) { - ldub(src); - cpu_abort(env, "should never reach here"); - } - src_phys |= src & ~TARGET_PAGE_MASK; - - dest_p = cpu_physical_memory_map(dest_phys, &len, 1); - src_p = cpu_physical_memory_map(src_phys, &len, 0); - - memmove(dest_p, src_p, len); - - cpu_physical_memory_unmap(dest_p, 1, len, len); - cpu_physical_memory_unmap(src_p, 0, len, len); -} -#endif - -/* and on array */ -uint32_t HELPER(nc)(uint32_t l, uint64_t dest, uint64_t src) -{ - int i; - unsigned char x; - uint32_t cc = 0; - - HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", - __func__, l, dest, src); - for (i = 0; i <= l; i++) { - x = ldub(dest + i) & ldub(src + i); - if (x) { - cc = 1; - } - stb(dest + i, x); - } - return cc; -} - -/* xor on array */ -uint32_t HELPER(xc)(uint32_t l, uint64_t dest, uint64_t src) -{ - int i; - unsigned char x; - uint32_t cc = 0; - - HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", - __func__, l, dest, src); - -#ifndef CONFIG_USER_ONLY - /* xor with itself is the same as memset(0) */ - if ((l > 32) && (src == dest) && - (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK)) { - mvc_fast_memset(env, l + 1, dest, 0); - return 0; - } -#else - if (src == dest) { - memset(g2h(dest), 0, l + 1); - return 0; - } -#endif - - for (i = 0; i <= l; i++) { - x = ldub(dest + i) ^ ldub(src + i); - if (x) { - cc = 1; - } - stb(dest + i, x); - } - return cc; -} - -/* or on array */ -uint32_t HELPER(oc)(uint32_t l, uint64_t dest, uint64_t src) -{ - int i; - unsigned char x; - uint32_t cc = 0; - - HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", - __func__, l, dest, src); - for (i = 0; i <= l; i++) { - x = ldub(dest + i) | ldub(src + i); - if (x) { - cc = 1; - } - stb(dest + i, x); - } - return cc; -} - -/* memmove */ -void HELPER(mvc)(uint32_t l, uint64_t dest, uint64_t src) -{ - int i = 0; - int x = 0; - uint32_t l_64 = (l + 1) / 8; - - HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", - __func__, l, dest, src); - -#ifndef CONFIG_USER_ONLY - if ((l > 32) && - (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK) && - (dest & TARGET_PAGE_MASK) == ((dest + l) & TARGET_PAGE_MASK)) { - if (dest == (src + 1)) { - mvc_fast_memset(env, l + 1, dest, ldub(src)); - return; - } else if ((src & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) { - mvc_fast_memmove(env, l + 1, dest, src); - return; - } - } -#else - if (dest == (src + 1)) { - memset(g2h(dest), ldub(src), l + 1); - return; - } else { - memmove(g2h(dest), g2h(src), l + 1); - return; - } -#endif - - /* handle the parts that fit into 8-byte loads/stores */ - if (dest != (src + 1)) { - for (i = 0; i < l_64; i++) { - stq(dest + x, ldq(src + x)); - x += 8; - } - } - - /* slow version crossing pages with byte accesses */ - for (i = x; i <= l; i++) { - stb(dest + i, ldub(src + i)); - } -} - -/* compare unsigned byte arrays */ -uint32_t HELPER(clc)(uint32_t l, uint64_t s1, uint64_t s2) -{ - int i; - unsigned char x, y; - uint32_t cc; - - HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n", - __func__, l, s1, s2); - for (i = 0; i <= l; i++) { - x = ldub(s1 + i); - y = ldub(s2 + i); - HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y); - if (x < y) { - cc = 1; - goto done; - } else if (x > y) { - cc = 2; - goto done; - } - } - cc = 0; - done: - HELPER_LOG("\n"); - return cc; -} - -/* compare logical under mask */ -uint32_t HELPER(clm)(uint32_t r1, uint32_t mask, uint64_t addr) -{ - uint8_t r, d; - uint32_t cc; - - HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1, - mask, addr); - cc = 0; - while (mask) { - if (mask & 8) { - d = ldub(addr); - r = (r1 & 0xff000000UL) >> 24; - HELPER_LOG("mask 0x%x %02x/%02x (0x%" PRIx64 ") ", mask, r, d, - addr); - if (r < d) { - cc = 1; - break; - } else if (r > d) { - cc = 2; - break; - } - addr++; - } - mask = (mask << 1) & 0xf; - r1 <<= 8; - } - HELPER_LOG("\n"); - return cc; -} - -/* store character under mask */ -void HELPER(stcm)(uint32_t r1, uint32_t mask, uint64_t addr) -{ - uint8_t r; - - HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%lx\n", __func__, r1, mask, - addr); - while (mask) { - if (mask & 8) { - r = (r1 & 0xff000000UL) >> 24; - stb(addr, r); - HELPER_LOG("mask 0x%x %02x (0x%lx) ", mask, r, addr); - addr++; - } - mask = (mask << 1) & 0xf; - r1 <<= 8; - } - HELPER_LOG("\n"); -} - -static inline uint64_t get_address(int x2, int b2, int d2) -{ - uint64_t r = d2; - - if (x2) { - r += env->regs[x2]; - } - - if (b2) { - r += env->regs[b2]; - } - - /* 31-Bit mode */ - if (!(env->psw.mask & PSW_MASK_64)) { - r &= 0x7fffffff; - } - - return r; -} - -static inline uint64_t get_address_31fix(int reg) -{ - uint64_t r = env->regs[reg]; - - /* 31-Bit mode */ - if (!(env->psw.mask & PSW_MASK_64)) { - r &= 0x7fffffff; - } - - return r; -} - -/* search string (c is byte to search, r2 is string, r1 end of string) */ -uint32_t HELPER(srst)(uint32_t c, uint32_t r1, uint32_t r2) -{ - uint64_t i; - uint32_t cc = 2; - uint64_t str = get_address_31fix(r2); - uint64_t end = get_address_31fix(r1); - - HELPER_LOG("%s: c %d *r1 0x%" PRIx64 " *r2 0x%" PRIx64 "\n", __func__, - c, env->regs[r1], env->regs[r2]); - - for (i = str; i != end; i++) { - if (ldub(i) == c) { - env->regs[r1] = i; - cc = 1; - break; - } - } - - return cc; -} - -/* unsigned string compare (c is string terminator) */ -uint32_t HELPER(clst)(uint32_t c, uint32_t r1, uint32_t r2) -{ - uint64_t s1 = get_address_31fix(r1); - uint64_t s2 = get_address_31fix(r2); - uint8_t v1, v2; - uint32_t cc; - - c = c & 0xff; -#ifdef CONFIG_USER_ONLY - if (!c) { - HELPER_LOG("%s: comparing '%s' and '%s'\n", - __func__, (char *)g2h(s1), (char *)g2h(s2)); - } -#endif - for (;;) { - v1 = ldub(s1); - v2 = ldub(s2); - if ((v1 == c || v2 == c) || (v1 != v2)) { - break; - } - s1++; - s2++; - } - - if (v1 == v2) { - cc = 0; - } else { - cc = (v1 < v2) ? 1 : 2; - /* FIXME: 31-bit mode! */ - env->regs[r1] = s1; - env->regs[r2] = s2; - } - return cc; -} - -/* move page */ -void HELPER(mvpg)(uint64_t r0, uint64_t r1, uint64_t r2) -{ - /* XXX missing r0 handling */ -#ifdef CONFIG_USER_ONLY - int i; - - for (i = 0; i < TARGET_PAGE_SIZE; i++) { - stb(r1 + i, ldub(r2 + i)); - } -#else - mvc_fast_memmove(env, TARGET_PAGE_SIZE, r1, r2); -#endif -} - -/* string copy (c is string terminator) */ -void HELPER(mvst)(uint32_t c, uint32_t r1, uint32_t r2) -{ - uint64_t dest = get_address_31fix(r1); - uint64_t src = get_address_31fix(r2); - uint8_t v; - - c = c & 0xff; -#ifdef CONFIG_USER_ONLY - if (!c) { - HELPER_LOG("%s: copy '%s' to 0x%lx\n", __func__, (char *)g2h(src), - dest); - } -#endif - for (;;) { - v = ldub(src); - stb(dest, v); - if (v == c) { - break; - } - src++; - dest++; - } - env->regs[r1] = dest; /* FIXME: 31-bit mode! */ -} - -/* compare and swap 64-bit */ -uint32_t HELPER(csg)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - /* FIXME: locking? */ - uint32_t cc; - uint64_t v2 = ldq(a2); - - if (env->regs[r1] == v2) { - cc = 0; - stq(a2, env->regs[r3]); - } else { - cc = 1; - env->regs[r1] = v2; - } - return cc; -} - -/* compare double and swap 64-bit */ -uint32_t HELPER(cdsg)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - /* FIXME: locking? */ - uint32_t cc; - uint64_t v2_hi = ldq(a2); - uint64_t v2_lo = ldq(a2 + 8); - uint64_t v1_hi = env->regs[r1]; - uint64_t v1_lo = env->regs[r1 + 1]; - - if ((v1_hi == v2_hi) && (v1_lo == v2_lo)) { - cc = 0; - stq(a2, env->regs[r3]); - stq(a2 + 8, env->regs[r3 + 1]); - } else { - cc = 1; - env->regs[r1] = v2_hi; - env->regs[r1 + 1] = v2_lo; - } - - return cc; -} - -/* compare and swap 32-bit */ -uint32_t HELPER(cs)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - /* FIXME: locking? */ - uint32_t cc; - uint32_t v2 = ldl(a2); - - HELPER_LOG("%s: r1 %d a2 0x%lx r3 %d\n", __func__, r1, a2, r3); - if (((uint32_t)env->regs[r1]) == v2) { - cc = 0; - stl(a2, (uint32_t)env->regs[r3]); - } else { - cc = 1; - env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | v2; - } - return cc; -} - -static uint32_t helper_icm(uint32_t r1, uint64_t address, uint32_t mask) -{ - int pos = 24; /* top of the lower half of r1 */ - uint64_t rmask = 0xff000000ULL; - uint8_t val = 0; - int ccd = 0; - uint32_t cc = 0; - - while (mask) { - if (mask & 8) { - env->regs[r1] &= ~rmask; - val = ldub(address); - if ((val & 0x80) && !ccd) { - cc = 1; - } - ccd = 1; - if (val && cc == 0) { - cc = 2; - } - env->regs[r1] |= (uint64_t)val << pos; - address++; - } - mask = (mask << 1) & 0xf; - pos -= 8; - rmask >>= 8; - } - - return cc; -} - -/* execute instruction - this instruction executes an insn modified with the contents of r1 - it does not change the executed instruction in memory - it does not change the program counter - in other words: tricky... - currently implemented by interpreting the cases it is most commonly used in -*/ -uint32_t HELPER(ex)(uint32_t cc, uint64_t v1, uint64_t addr, uint64_t ret) -{ - uint16_t insn = lduw_code(addr); - - HELPER_LOG("%s: v1 0x%lx addr 0x%lx insn 0x%x\n", __func__, v1, addr, - insn); - if ((insn & 0xf0ff) == 0xd000) { - uint32_t l, insn2, b1, b2, d1, d2; - - l = v1 & 0xff; - insn2 = ldl_code(addr + 2); - b1 = (insn2 >> 28) & 0xf; - b2 = (insn2 >> 12) & 0xf; - d1 = (insn2 >> 16) & 0xfff; - d2 = insn2 & 0xfff; - switch (insn & 0xf00) { - case 0x200: - helper_mvc(l, get_address(0, b1, d1), get_address(0, b2, d2)); - break; - case 0x500: - cc = helper_clc(l, get_address(0, b1, d1), get_address(0, b2, d2)); - break; - case 0x700: - cc = helper_xc(l, get_address(0, b1, d1), get_address(0, b2, d2)); - break; - case 0xc00: - helper_tr(l, get_address(0, b1, d1), get_address(0, b2, d2)); - break; - default: - goto abort; - break; - } - } else if ((insn & 0xff00) == 0x0a00) { - /* supervisor call */ - HELPER_LOG("%s: svc %ld via execute\n", __func__, (insn | v1) & 0xff); - env->psw.addr = ret - 4; - env->int_svc_code = (insn | v1) & 0xff; - env->int_svc_ilc = 4; - helper_exception(EXCP_SVC); - } else if ((insn & 0xff00) == 0xbf00) { - uint32_t insn2, r1, r3, b2, d2; - - insn2 = ldl_code(addr + 2); - r1 = (insn2 >> 20) & 0xf; - r3 = (insn2 >> 16) & 0xf; - b2 = (insn2 >> 12) & 0xf; - d2 = insn2 & 0xfff; - cc = helper_icm(r1, get_address(0, b2, d2), r3); - } else { - abort: - cpu_abort(env, "EXECUTE on instruction prefix 0x%x not implemented\n", - insn); - } - return cc; -} - -/* store character under mask high operates on the upper half of r1 */ -void HELPER(stcmh)(uint32_t r1, uint64_t address, uint32_t mask) -{ - int pos = 56; /* top of the upper half of r1 */ - - while (mask) { - if (mask & 8) { - stb(address, (env->regs[r1] >> pos) & 0xff); - address++; - } - mask = (mask << 1) & 0xf; - pos -= 8; - } -} - -/* insert character under mask high; same as icm, but operates on the - upper half of r1 */ -uint32_t HELPER(icmh)(uint32_t r1, uint64_t address, uint32_t mask) -{ - int pos = 56; /* top of the upper half of r1 */ - uint64_t rmask = 0xff00000000000000ULL; - uint8_t val = 0; - int ccd = 0; - uint32_t cc = 0; - - while (mask) { - if (mask & 8) { - env->regs[r1] &= ~rmask; - val = ldub(address); - if ((val & 0x80) && !ccd) { - cc = 1; - } - ccd = 1; - if (val && cc == 0) { - cc = 2; - } - env->regs[r1] |= (uint64_t)val << pos; - address++; - } - mask = (mask << 1) & 0xf; - pos -= 8; - rmask >>= 8; - } - - return cc; -} - -/* load access registers r1 to r3 from memory at a2 */ -void HELPER(lam)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - - for (i = r1;; i = (i + 1) % 16) { - env->aregs[i] = ldl(a2); - a2 += 4; - - if (i == r3) { - break; - } - } -} - -/* store access registers r1 to r3 in memory at a2 */ -void HELPER(stam)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - - for (i = r1;; i = (i + 1) % 16) { - stl(a2, env->aregs[i]); - a2 += 4; - - if (i == r3) { - break; - } - } -} - -/* move long */ -uint32_t HELPER(mvcl)(uint32_t r1, uint32_t r2) -{ - uint64_t destlen = env->regs[r1 + 1] & 0xffffff; - uint64_t dest = get_address_31fix(r1); - uint64_t srclen = env->regs[r2 + 1] & 0xffffff; - uint64_t src = get_address_31fix(r2); - uint8_t pad = src >> 24; - uint8_t v; - uint32_t cc; - - if (destlen == srclen) { - cc = 0; - } else if (destlen < srclen) { - cc = 1; - } else { - cc = 2; - } - - if (srclen > destlen) { - srclen = destlen; - } - - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v = ldub(src); - stb(dest, v); - } - - for (; destlen; dest++, destlen--) { - stb(dest, pad); - } - - env->regs[r1 + 1] = destlen; - /* can't use srclen here, we trunc'ed it */ - env->regs[r2 + 1] -= src - env->regs[r2]; - env->regs[r1] = dest; - env->regs[r2] = src; - - return cc; -} - -/* move long extended another memcopy insn with more bells and whistles */ -uint32_t HELPER(mvcle)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - uint64_t destlen = env->regs[r1 + 1]; - uint64_t dest = env->regs[r1]; - uint64_t srclen = env->regs[r3 + 1]; - uint64_t src = env->regs[r3]; - uint8_t pad = a2 & 0xff; - uint8_t v; - uint32_t cc; - - if (!(env->psw.mask & PSW_MASK_64)) { - destlen = (uint32_t)destlen; - srclen = (uint32_t)srclen; - dest &= 0x7fffffff; - src &= 0x7fffffff; - } - - if (destlen == srclen) { - cc = 0; - } else if (destlen < srclen) { - cc = 1; - } else { - cc = 2; - } - - if (srclen > destlen) { - srclen = destlen; - } - - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v = ldub(src); - stb(dest, v); - } - - for (; destlen; dest++, destlen--) { - stb(dest, pad); - } - - env->regs[r1 + 1] = destlen; - /* can't use srclen here, we trunc'ed it */ - /* FIXME: 31-bit mode! */ - env->regs[r3 + 1] -= src - env->regs[r3]; - env->regs[r1] = dest; - env->regs[r3] = src; - - return cc; -} - -/* compare logical long extended memcompare insn with padding */ -uint32_t HELPER(clcle)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - uint64_t destlen = env->regs[r1 + 1]; - uint64_t dest = get_address_31fix(r1); - uint64_t srclen = env->regs[r3 + 1]; - uint64_t src = get_address_31fix(r3); - uint8_t pad = a2 & 0xff; - uint8_t v1 = 0, v2 = 0; - uint32_t cc = 0; - - if (!(destlen || srclen)) { - return cc; - } - - if (srclen > destlen) { - srclen = destlen; - } - - for (; destlen || srclen; src++, dest++, destlen--, srclen--) { - v1 = srclen ? ldub(src) : pad; - v2 = destlen ? ldub(dest) : pad; - if (v1 != v2) { - cc = (v1 < v2) ? 1 : 2; - break; - } - } - - env->regs[r1 + 1] = destlen; - /* can't use srclen here, we trunc'ed it */ - env->regs[r3 + 1] -= src - env->regs[r3]; - env->regs[r1] = dest; - env->regs[r3] = src; - - return cc; -} - -/* checksum */ -void HELPER(cksm)(uint32_t r1, uint32_t r2) -{ - uint64_t src = get_address_31fix(r2); - uint64_t src_len = env->regs[(r2 + 1) & 15]; - uint64_t cksm = (uint32_t)env->regs[r1]; - - while (src_len >= 4) { - cksm += ldl(src); - - /* move to next word */ - src_len -= 4; - src += 4; - } - - switch (src_len) { - case 0: - break; - case 1: - cksm += ldub(src) << 24; - break; - case 2: - cksm += lduw(src) << 16; - break; - case 3: - cksm += lduw(src) << 16; - cksm += ldub(src + 2) << 8; - break; - } - - /* indicate we've processed everything */ - env->regs[r2] = src + src_len; - env->regs[(r2 + 1) & 15] = 0; - - /* store result */ - env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | - ((uint32_t)cksm + (cksm >> 32)); -} - -void HELPER(unpk)(uint32_t len, uint64_t dest, uint64_t src) -{ - int len_dest = len >> 4; - int len_src = len & 0xf; - uint8_t b; - int second_nibble = 0; - - dest += len_dest; - src += len_src; - - /* last byte is special, it only flips the nibbles */ - b = ldub(src); - stb(dest, (b << 4) | (b >> 4)); - src--; - len_src--; - - /* now pad every nibble with 0xf0 */ - - while (len_dest > 0) { - uint8_t cur_byte = 0; - - if (len_src > 0) { - cur_byte = ldub(src); - } - - len_dest--; - dest--; - - /* only advance one nibble at a time */ - if (second_nibble) { - cur_byte >>= 4; - len_src--; - src--; - } - second_nibble = !second_nibble; - - /* digit */ - cur_byte = (cur_byte & 0xf); - /* zone bits */ - cur_byte |= 0xf0; - - stb(dest, cur_byte); - } -} - -void HELPER(tr)(uint32_t len, uint64_t array, uint64_t trans) -{ - int i; - - for (i = 0; i <= len; i++) { - uint8_t byte = ldub(array + i); - uint8_t new_byte = ldub(trans + byte); - - stb(array + i, new_byte); - } -} - -#ifndef CONFIG_USER_ONLY void program_interrupt(CPUS390XState *env, uint32_t code, int ilc) { qemu_log("program interrupt at %#" PRIx64 "\n", env->psw.addr); @@ -1267,206 +384,6 @@ uint32_t HELPER(stsi)(uint64_t a0, uint32_t r0, uint32_t r1) return cc; } -void HELPER(lctlg)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - uint64_t src = a2; - - for (i = r1;; i = (i + 1) % 16) { - env->cregs[i] = ldq(src); - HELPER_LOG("load ctl %d from 0x%" PRIx64 " == 0x%" PRIx64 "\n", - i, src, env->cregs[i]); - src += sizeof(uint64_t); - - if (i == r3) { - break; - } - } - - tlb_flush(env, 1); -} - -void HELPER(lctl)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - uint64_t src = a2; - - for (i = r1;; i = (i + 1) % 16) { - env->cregs[i] = (env->cregs[i] & 0xFFFFFFFF00000000ULL) | ldl(src); - src += sizeof(uint32_t); - - if (i == r3) { - break; - } - } - - tlb_flush(env, 1); -} - -void HELPER(stctg)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - uint64_t dest = a2; - - for (i = r1;; i = (i + 1) % 16) { - stq(dest, env->cregs[i]); - dest += sizeof(uint64_t); - - if (i == r3) { - break; - } - } -} - -void HELPER(stctl)(uint32_t r1, uint64_t a2, uint32_t r3) -{ - int i; - uint64_t dest = a2; - - for (i = r1;; i = (i + 1) % 16) { - stl(dest, env->cregs[i]); - dest += sizeof(uint32_t); - - if (i == r3) { - break; - } - } -} - -uint32_t HELPER(tprot)(uint64_t a1, uint64_t a2) -{ - /* XXX implement */ - - return 0; -} - -/* insert storage key extended */ -uint64_t HELPER(iske)(uint64_t r2) -{ - uint64_t addr = get_address(0, 0, r2); - - if (addr > ram_size) { - return 0; - } - - return env->storage_keys[addr / TARGET_PAGE_SIZE]; -} - -/* set storage key extended */ -void HELPER(sske)(uint32_t r1, uint64_t r2) -{ - uint64_t addr = get_address(0, 0, r2); - - if (addr > ram_size) { - return; - } - - env->storage_keys[addr / TARGET_PAGE_SIZE] = r1; -} - -/* reset reference bit extended */ -uint32_t HELPER(rrbe)(uint32_t r1, uint64_t r2) -{ - uint8_t re; - uint8_t key; - - if (r2 > ram_size) { - return 0; - } - - key = env->storage_keys[r2 / TARGET_PAGE_SIZE]; - re = key & (SK_R | SK_C); - env->storage_keys[r2 / TARGET_PAGE_SIZE] = (key & ~SK_R); - - /* - * cc - * - * 0 Reference bit zero; change bit zero - * 1 Reference bit zero; change bit one - * 2 Reference bit one; change bit zero - * 3 Reference bit one; change bit one - */ - - return re >> 1; -} - -/* compare and swap and purge */ -uint32_t HELPER(csp)(uint32_t r1, uint32_t r2) -{ - uint32_t cc; - uint32_t o1 = env->regs[r1]; - uint64_t a2 = get_address_31fix(r2) & ~3ULL; - uint32_t o2 = ldl(a2); - - if (o1 == o2) { - stl(a2, env->regs[(r1 + 1) & 15]); - if (env->regs[r2] & 0x3) { - /* flush TLB / ALB */ - tlb_flush(env, 1); - } - cc = 0; - } else { - env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | o2; - cc = 1; - } - - return cc; -} - -static uint32_t mvc_asc(int64_t l, uint64_t a1, uint64_t mode1, uint64_t a2, - uint64_t mode2) -{ - target_ulong src, dest; - int flags, cc = 0, i; - - if (!l) { - return 0; - } else if (l > 256) { - /* max 256 */ - l = 256; - cc = 3; - } - - if (mmu_translate(env, a1 & TARGET_PAGE_MASK, 1, mode1, &dest, &flags)) { - cpu_loop_exit(env); - } - dest |= a1 & ~TARGET_PAGE_MASK; - - if (mmu_translate(env, a2 & TARGET_PAGE_MASK, 0, mode2, &src, &flags)) { - cpu_loop_exit(env); - } - src |= a2 & ~TARGET_PAGE_MASK; - - /* XXX replace w/ memcpy */ - for (i = 0; i < l; i++) { - /* XXX be more clever */ - if ((((dest + i) & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) || - (((src + i) & TARGET_PAGE_MASK) != (src & TARGET_PAGE_MASK))) { - mvc_asc(l - i, a1 + i, mode1, a2 + i, mode2); - break; - } - stb_phys(dest + i, ldub_phys(src + i)); - } - - return cc; -} - -uint32_t HELPER(mvcs)(uint64_t l, uint64_t a1, uint64_t a2) -{ - HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", - __func__, l, a1, a2); - - return mvc_asc(l, a1, PSW_ASC_SECONDARY, a2, PSW_ASC_PRIMARY); -} - -uint32_t HELPER(mvcp)(uint64_t l, uint64_t a1, uint64_t a2) -{ - HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", - __func__, l, a1, a2); - - return mvc_asc(l, a1, PSW_ASC_PRIMARY, a2, PSW_ASC_SECONDARY); -} - uint32_t HELPER(sigp)(uint64_t order_code, uint32_t r1, uint64_t cpu_addr) { int cc = 0; @@ -1508,78 +425,4 @@ uint32_t HELPER(sigp)(uint64_t order_code, uint32_t r1, uint64_t cpu_addr) return cc; } - -/* invalidate pte */ -void HELPER(ipte)(uint64_t pte_addr, uint64_t vaddr) -{ - uint64_t page = vaddr & TARGET_PAGE_MASK; - uint64_t pte = 0; - - /* XXX broadcast to other CPUs */ - - /* XXX Linux is nice enough to give us the exact pte address. - According to spec we'd have to find it out ourselves */ - /* XXX Linux is fine with overwriting the pte, the spec requires - us to only set the invalid bit */ - stq_phys(pte_addr, pte | _PAGE_INVALID); - - /* XXX we exploit the fact that Linux passes the exact virtual - address here - it's not obliged to! */ - tlb_flush_page(env, page); - - /* XXX 31-bit hack */ - if (page & 0x80000000) { - tlb_flush_page(env, page & ~0x80000000); - } else { - tlb_flush_page(env, page | 0x80000000); - } -} - -/* flush local tlb */ -void HELPER(ptlb)(void) -{ - tlb_flush(env, 1); -} - -/* store using real address */ -void HELPER(stura)(uint64_t addr, uint32_t v1) -{ - stw_phys(get_address(0, 0, addr), v1); -} - -/* load real address */ -uint32_t HELPER(lra)(uint64_t addr, uint32_t r1) -{ - uint32_t cc = 0; - int old_exc = env->exception_index; - uint64_t asc = env->psw.mask & PSW_MASK_ASC; - uint64_t ret; - int flags; - - /* XXX incomplete - has more corner cases */ - if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) { - program_interrupt(env, PGM_SPECIAL_OP, 2); - } - - env->exception_index = old_exc; - if (mmu_translate(env, addr, 0, asc, &ret, &flags)) { - cc = 3; - } - if (env->exception_index == EXCP_PGM) { - ret = env->int_pgm_code | 0x80000000; - } else { - ret |= addr & ~TARGET_PAGE_MASK; - } - env->exception_index = old_exc; - - if (!(env->psw.mask & PSW_MASK_64)) { - env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | - (ret & 0xffffffffULL); - } else { - env->regs[r1] = ret; - } - - return cc; -} - #endif |