Peter Crosthwaite | 9b68a77 | 2015-09-10 22:39:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Host code generation common components |
| 3 | * |
| 4 | * Copyright (c) 2015 Peter Crosthwaite <crosthwaite.peter@gmail.com> |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
Peter Maydell | 7b31bbc | 2016-01-26 18:16:56 +0000 | [diff] [blame] | 20 | #include "qemu/osdep.h" |
Peter Crosthwaite | 9b68a77 | 2015-09-10 22:39:33 -0700 | [diff] [blame] | 21 | #include "qemu-common.h" |
| 22 | #include "qom/cpu.h" |
Paolo Bonzini | 4b4629d | 2016-03-15 16:47:38 +0100 | [diff] [blame] | 23 | #include "sysemu/cpus.h" |
Peter Crosthwaite | 9b68a77 | 2015-09-10 22:39:33 -0700 | [diff] [blame] | 24 | |
Peter Crosthwaite | 5f12a78 | 2015-09-10 22:39:36 -0700 | [diff] [blame] | 25 | uintptr_t qemu_real_host_page_size; |
Paolo Bonzini | 0c2d70c | 2015-12-02 13:00:54 +0100 | [diff] [blame] | 26 | intptr_t qemu_real_host_page_mask; |
Peter Crosthwaite | 5f12a78 | 2015-09-10 22:39:36 -0700 | [diff] [blame] | 27 | |
Peter Crosthwaite | 9b68a77 | 2015-09-10 22:39:33 -0700 | [diff] [blame] | 28 | #ifndef CONFIG_USER_ONLY |
| 29 | /* mask must never be zero, except for A20 change call */ |
| 30 | static void tcg_handle_interrupt(CPUState *cpu, int mask) |
| 31 | { |
| 32 | int old_mask; |
| 33 | |
| 34 | old_mask = cpu->interrupt_request; |
| 35 | cpu->interrupt_request |= mask; |
| 36 | |
| 37 | /* |
| 38 | * If called from iothread context, wake the target cpu in |
| 39 | * case its halted. |
| 40 | */ |
| 41 | if (!qemu_cpu_is_self(cpu)) { |
| 42 | qemu_cpu_kick(cpu); |
| 43 | return; |
| 44 | } |
| 45 | |
| 46 | if (use_icount) { |
| 47 | cpu->icount_decr.u16.high = 0xffff; |
| 48 | if (!cpu->can_do_io |
| 49 | && (mask & ~old_mask) != 0) { |
| 50 | cpu_abort(cpu, "Raised interrupt while not in I/O function"); |
| 51 | } |
| 52 | } else { |
| 53 | cpu->tcg_exit_req = 1; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt; |
| 58 | #endif |