From 2cc1a90166b5baa7ae9d00baf7099254e1353485 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Wed, 24 Feb 2021 19:39:52 +0100 Subject: Remove deprecated target tilegx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit TILE-Gx was only implemented in linux-user mode, but support for this CPU was removed from the upstream Linux kernel in 2018, and it has also been dropped from glibc, so there is no new Linux development taking place with this architecture. For running the old binaries, users can simply use older versions of QEMU. Signed-off-by: Thomas Huth Reviewed-by: Alex Bennée Acked-by: Richard Henderson Acked-by: Laurent Vivier Message-Id: <20210224183952.80463-1-thuth@redhat.com> Signed-off-by: Thomas Huth --- linux-user/tilegx/cpu_loop.c | 287 ------------------------------------------- 1 file changed, 287 deletions(-) delete mode 100644 linux-user/tilegx/cpu_loop.c (limited to 'linux-user/tilegx/cpu_loop.c') diff --git a/linux-user/tilegx/cpu_loop.c b/linux-user/tilegx/cpu_loop.c deleted file mode 100644 index 490a8f38e5..0000000000 --- a/linux-user/tilegx/cpu_loop.c +++ /dev/null @@ -1,287 +0,0 @@ -/* - * qemu user cpu loop - * - * Copyright (c) 2003-2008 Fabrice Bellard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "qemu.h" -#include "cpu_loop-common.h" - -static void gen_sigill_reg(CPUTLGState *env) -{ - target_siginfo_t info; - - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_PRVREG; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); -} - -static void do_signal(CPUTLGState *env, int signo, int sigcode) -{ - target_siginfo_t info; - - info.si_signo = signo; - info.si_errno = 0; - info._sifields._sigfault._addr = env->pc; - - if (signo == TARGET_SIGSEGV) { - /* The passed in sigcode is a dummy; check for a page mapping - and pass either MAPERR or ACCERR. */ - target_ulong addr = env->excaddr; - info._sifields._sigfault._addr = addr; - if (page_check_range(addr, 1, PAGE_VALID) < 0) { - sigcode = TARGET_SEGV_MAPERR; - } else { - sigcode = TARGET_SEGV_ACCERR; - } - } - info.si_code = sigcode; - - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); -} - -static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr) -{ - env->excaddr = addr; - do_signal(env, TARGET_SIGSEGV, 0); -} - -static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val) -{ - if (unlikely(reg >= TILEGX_R_COUNT)) { - switch (reg) { - case TILEGX_R_SN: - case TILEGX_R_ZERO: - return; - case TILEGX_R_IDN0: - case TILEGX_R_IDN1: - case TILEGX_R_UDN0: - case TILEGX_R_UDN1: - case TILEGX_R_UDN2: - case TILEGX_R_UDN3: - gen_sigill_reg(env); - return; - default: - g_assert_not_reached(); - } - } - env->regs[reg] = val; -} - -/* - * Compare the 8-byte contents of the CmpValue SPR with the 8-byte value in - * memory at the address held in the first source register. If the values are - * not equal, then no memory operation is performed. If the values are equal, - * the 8-byte quantity from the second source register is written into memory - * at the address held in the first source register. In either case, the result - * of the instruction is the value read from memory. The compare and write to - * memory are atomic and thus can be used for synchronization purposes. This - * instruction only operates for addresses aligned to a 8-byte boundary. - * Unaligned memory access causes an Unaligned Data Reference interrupt. - * - * Functional Description (64-bit) - * uint64_t memVal = memoryReadDoubleWord (rf[SrcA]); - * rf[Dest] = memVal; - * if (memVal == SPR[CmpValueSPR]) - * memoryWriteDoubleWord (rf[SrcA], rf[SrcB]); - * - * Functional Description (32-bit) - * uint64_t memVal = signExtend32 (memoryReadWord (rf[SrcA])); - * rf[Dest] = memVal; - * if (memVal == signExtend32 (SPR[CmpValueSPR])) - * memoryWriteWord (rf[SrcA], rf[SrcB]); - * - * - * This function also processes exch and exch4 which need not process SPR. - */ -static void do_exch(CPUTLGState *env, bool quad, bool cmp) -{ - target_ulong addr; - target_long val, sprval; - - start_exclusive(); - - addr = env->atomic_srca; - if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { - goto sigsegv_maperr; - } - - if (cmp) { - if (quad) { - sprval = env->spregs[TILEGX_SPR_CMPEXCH]; - } else { - sprval = sextract64(env->spregs[TILEGX_SPR_CMPEXCH], 0, 32); - } - } - - if (!cmp || val == sprval) { - target_long valb = env->atomic_srcb; - if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { - goto sigsegv_maperr; - } - } - - set_regval(env, env->atomic_dstr, val); - end_exclusive(); - return; - - sigsegv_maperr: - end_exclusive(); - gen_sigsegv_maperr(env, addr); -} - -static void do_fetch(CPUTLGState *env, int trapnr, bool quad) -{ - int8_t write = 1; - target_ulong addr; - target_long val, valb; - - start_exclusive(); - - addr = env->atomic_srca; - valb = env->atomic_srcb; - if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { - goto sigsegv_maperr; - } - - switch (trapnr) { - case TILEGX_EXCP_OPCODE_FETCHADD: - case TILEGX_EXCP_OPCODE_FETCHADD4: - valb += val; - break; - case TILEGX_EXCP_OPCODE_FETCHADDGEZ: - valb += val; - if (valb < 0) { - write = 0; - } - break; - case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: - valb += val; - if ((int32_t)valb < 0) { - write = 0; - } - break; - case TILEGX_EXCP_OPCODE_FETCHAND: - case TILEGX_EXCP_OPCODE_FETCHAND4: - valb &= val; - break; - case TILEGX_EXCP_OPCODE_FETCHOR: - case TILEGX_EXCP_OPCODE_FETCHOR4: - valb |= val; - break; - default: - g_assert_not_reached(); - } - - if (write) { - if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { - goto sigsegv_maperr; - } - } - - set_regval(env, env->atomic_dstr, val); - end_exclusive(); - return; - - sigsegv_maperr: - end_exclusive(); - gen_sigsegv_maperr(env, addr); -} - -void cpu_loop(CPUTLGState *env) -{ - CPUState *cs = env_cpu(env); - int trapnr; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case TILEGX_EXCP_SYSCALL: - { - abi_ulong ret = do_syscall(env, env->regs[TILEGX_R_NR], - env->regs[0], env->regs[1], - env->regs[2], env->regs[3], - env->regs[4], env->regs[5], - env->regs[6], env->regs[7]); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 8; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[TILEGX_R_RE] = ret; - env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(ret) ? -ret : 0; - } - break; - } - case TILEGX_EXCP_OPCODE_EXCH: - do_exch(env, true, false); - break; - case TILEGX_EXCP_OPCODE_EXCH4: - do_exch(env, false, false); - break; - case TILEGX_EXCP_OPCODE_CMPEXCH: - do_exch(env, true, true); - break; - case TILEGX_EXCP_OPCODE_CMPEXCH4: - do_exch(env, false, true); - break; - case TILEGX_EXCP_OPCODE_FETCHADD: - case TILEGX_EXCP_OPCODE_FETCHADDGEZ: - case TILEGX_EXCP_OPCODE_FETCHAND: - case TILEGX_EXCP_OPCODE_FETCHOR: - do_fetch(env, trapnr, true); - break; - case TILEGX_EXCP_OPCODE_FETCHADD4: - case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: - case TILEGX_EXCP_OPCODE_FETCHAND4: - case TILEGX_EXCP_OPCODE_FETCHOR4: - do_fetch(env, trapnr, false); - break; - case TILEGX_EXCP_SIGNAL: - do_signal(env, env->signo, env->sigcode); - break; - case TILEGX_EXCP_REG_IDN_ACCESS: - case TILEGX_EXCP_REG_UDN_ACCESS: - gen_sigill_reg(env); - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr); - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) -{ - int i; - for (i = 0; i < TILEGX_R_COUNT; i++) { - env->regs[i] = regs->regs[i]; - } - for (i = 0; i < TILEGX_SPR_COUNT; i++) { - env->spregs[i] = 0; - } - env->pc = regs->pc; -} -- cgit v1.2.3