diff options
author | RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
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committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/target-i386/bpt_helper.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/target-i386/bpt_helper.c')
-rw-r--r-- | qemu/target-i386/bpt_helper.c | 327 |
1 files changed, 0 insertions, 327 deletions
diff --git a/qemu/target-i386/bpt_helper.c b/qemu/target-i386/bpt_helper.c deleted file mode 100644 index f47df1998..000000000 --- a/qemu/target-i386/bpt_helper.c +++ /dev/null @@ -1,327 +0,0 @@ -/* - * i386 breakpoint helpers - * - * Copyright (c) 2003 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 "qemu/osdep.h" -#include "cpu.h" -#include "exec/helper-proto.h" - - -#ifndef CONFIG_USER_ONLY -static inline bool hw_local_breakpoint_enabled(unsigned long dr7, int index) -{ - return (dr7 >> (index * 2)) & 1; -} - -static inline bool hw_global_breakpoint_enabled(unsigned long dr7, int index) -{ - return (dr7 >> (index * 2)) & 2; - -} -static inline bool hw_breakpoint_enabled(unsigned long dr7, int index) -{ - return hw_global_breakpoint_enabled(dr7, index) || - hw_local_breakpoint_enabled(dr7, index); -} - -static inline int hw_breakpoint_type(unsigned long dr7, int index) -{ - return (dr7 >> (DR7_TYPE_SHIFT + (index * 4))) & 3; -} - -static inline int hw_breakpoint_len(unsigned long dr7, int index) -{ - int len = ((dr7 >> (DR7_LEN_SHIFT + (index * 4))) & 3); - return (len == 2) ? 8 : len + 1; -} - -static int hw_breakpoint_insert(CPUX86State *env, int index) -{ - CPUState *cs = CPU(x86_env_get_cpu(env)); - target_ulong dr7 = env->dr[7]; - target_ulong drN = env->dr[index]; - int err = 0; - - switch (hw_breakpoint_type(dr7, index)) { - case DR7_TYPE_BP_INST: - if (hw_breakpoint_enabled(dr7, index)) { - err = cpu_breakpoint_insert(cs, drN, BP_CPU, - &env->cpu_breakpoint[index]); - } - break; - - case DR7_TYPE_IO_RW: - /* Notice when we should enable calls to bpt_io. */ - return hw_breakpoint_enabled(env->dr[7], index) - ? HF_IOBPT_MASK : 0; - - case DR7_TYPE_DATA_WR: - if (hw_breakpoint_enabled(dr7, index)) { - err = cpu_watchpoint_insert(cs, drN, - hw_breakpoint_len(dr7, index), - BP_CPU | BP_MEM_WRITE, - &env->cpu_watchpoint[index]); - } - break; - - case DR7_TYPE_DATA_RW: - if (hw_breakpoint_enabled(dr7, index)) { - err = cpu_watchpoint_insert(cs, drN, - hw_breakpoint_len(dr7, index), - BP_CPU | BP_MEM_ACCESS, - &env->cpu_watchpoint[index]); - } - break; - } - if (err) { - env->cpu_breakpoint[index] = NULL; - } - return 0; -} - -static void hw_breakpoint_remove(CPUX86State *env, int index) -{ - CPUState *cs = CPU(x86_env_get_cpu(env)); - - switch (hw_breakpoint_type(env->dr[7], index)) { - case DR7_TYPE_BP_INST: - if (env->cpu_breakpoint[index]) { - cpu_breakpoint_remove_by_ref(cs, env->cpu_breakpoint[index]); - env->cpu_breakpoint[index] = NULL; - } - break; - - case DR7_TYPE_DATA_WR: - case DR7_TYPE_DATA_RW: - if (env->cpu_breakpoint[index]) { - cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[index]); - env->cpu_breakpoint[index] = NULL; - } - break; - - case DR7_TYPE_IO_RW: - /* HF_IOBPT_MASK cleared elsewhere. */ - break; - } -} - -void cpu_x86_update_dr7(CPUX86State *env, uint32_t new_dr7) -{ - target_ulong old_dr7 = env->dr[7]; - int iobpt = 0; - int i; - - new_dr7 |= DR7_FIXED_1; - - /* If nothing is changing except the global/local enable bits, - then we can make the change more efficient. */ - if (((old_dr7 ^ new_dr7) & ~0xff) == 0) { - /* Fold the global and local enable bits together into the - global fields, then xor to show which registers have - changed collective enable state. */ - int mod = ((old_dr7 | old_dr7 * 2) ^ (new_dr7 | new_dr7 * 2)) & 0xff; - - for (i = 0; i < DR7_MAX_BP; i++) { - if ((mod & (2 << i * 2)) && !hw_breakpoint_enabled(new_dr7, i)) { - hw_breakpoint_remove(env, i); - } - } - env->dr[7] = new_dr7; - for (i = 0; i < DR7_MAX_BP; i++) { - if (mod & (2 << i * 2) && hw_breakpoint_enabled(new_dr7, i)) { - iobpt |= hw_breakpoint_insert(env, i); - } else if (hw_breakpoint_type(new_dr7, i) == DR7_TYPE_IO_RW - && hw_breakpoint_enabled(new_dr7, i)) { - iobpt |= HF_IOBPT_MASK; - } - } - } else { - for (i = 0; i < DR7_MAX_BP; i++) { - hw_breakpoint_remove(env, i); - } - env->dr[7] = new_dr7; - for (i = 0; i < DR7_MAX_BP; i++) { - iobpt |= hw_breakpoint_insert(env, i); - } - } - - env->hflags = (env->hflags & ~HF_IOBPT_MASK) | iobpt; -} - -static bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update) -{ - target_ulong dr6; - int reg; - bool hit_enabled = false; - - dr6 = env->dr[6] & ~0xf; - for (reg = 0; reg < DR7_MAX_BP; reg++) { - bool bp_match = false; - bool wp_match = false; - - switch (hw_breakpoint_type(env->dr[7], reg)) { - case DR7_TYPE_BP_INST: - if (env->dr[reg] == env->eip) { - bp_match = true; - } - break; - case DR7_TYPE_DATA_WR: - case DR7_TYPE_DATA_RW: - if (env->cpu_watchpoint[reg] && - env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) { - wp_match = true; - } - break; - case DR7_TYPE_IO_RW: - break; - } - if (bp_match || wp_match) { - dr6 |= 1 << reg; - if (hw_breakpoint_enabled(env->dr[7], reg)) { - hit_enabled = true; - } - } - } - - if (hit_enabled || force_dr6_update) { - env->dr[6] = dr6; - } - - return hit_enabled; -} - -void breakpoint_handler(CPUState *cs) -{ - X86CPU *cpu = X86_CPU(cs); - CPUX86State *env = &cpu->env; - CPUBreakpoint *bp; - - if (cs->watchpoint_hit) { - if (cs->watchpoint_hit->flags & BP_CPU) { - cs->watchpoint_hit = NULL; - if (check_hw_breakpoints(env, false)) { - raise_exception(env, EXCP01_DB); - } else { - cpu_resume_from_signal(cs, NULL); - } - } - } else { - QTAILQ_FOREACH(bp, &cs->breakpoints, entry) { - if (bp->pc == env->eip) { - if (bp->flags & BP_CPU) { - check_hw_breakpoints(env, true); - raise_exception(env, EXCP01_DB); - } - break; - } - } - } -} -#endif - -void helper_single_step(CPUX86State *env) -{ -#ifndef CONFIG_USER_ONLY - check_hw_breakpoints(env, true); - env->dr[6] |= DR6_BS; -#endif - raise_exception(env, EXCP01_DB); -} - -void helper_set_dr(CPUX86State *env, int reg, target_ulong t0) -{ -#ifndef CONFIG_USER_ONLY - switch (reg) { - case 0: case 1: case 2: case 3: - if (hw_breakpoint_enabled(env->dr[7], reg) - && hw_breakpoint_type(env->dr[7], reg) != DR7_TYPE_IO_RW) { - hw_breakpoint_remove(env, reg); - env->dr[reg] = t0; - hw_breakpoint_insert(env, reg); - } else { - env->dr[reg] = t0; - } - return; - case 4: - if (env->cr[4] & CR4_DE_MASK) { - break; - } - /* fallthru */ - case 6: - env->dr[6] = t0 | DR6_FIXED_1; - return; - case 5: - if (env->cr[4] & CR4_DE_MASK) { - break; - } - /* fallthru */ - case 7: - cpu_x86_update_dr7(env, t0); - return; - } - raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC()); -#endif -} - -target_ulong helper_get_dr(CPUX86State *env, int reg) -{ - switch (reg) { - case 0: case 1: case 2: case 3: case 6: case 7: - return env->dr[reg]; - case 4: - if (env->cr[4] & CR4_DE_MASK) { - break; - } else { - return env->dr[6]; - } - case 5: - if (env->cr[4] & CR4_DE_MASK) { - break; - } else { - return env->dr[7]; - } - } - raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC()); -} - -/* Check if Port I/O is trapped by a breakpoint. */ -void helper_bpt_io(CPUX86State *env, uint32_t port, - uint32_t size, target_ulong next_eip) -{ -#ifndef CONFIG_USER_ONLY - target_ulong dr7 = env->dr[7]; - int i, hit = 0; - - for (i = 0; i < DR7_MAX_BP; ++i) { - if (hw_breakpoint_type(dr7, i) == DR7_TYPE_IO_RW - && hw_breakpoint_enabled(dr7, i)) { - int bpt_len = hw_breakpoint_len(dr7, i); - if (port + size - 1 >= env->dr[i] - && port <= env->dr[i] + bpt_len - 1) { - hit |= 1 << i; - } - } - } - - if (hit) { - env->dr[6] = (env->dr[6] & ~0xf) | hit; - env->eip = next_eip; - raise_exception(env, EXCP01_DB); - } -#endif -} |