Gerd Hoffmann | bb355b1 | 2012-12-12 15:54:59 +0100 | [diff] [blame] | 1 | /* |
| 2 | * debug exit port emulation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation; either version 2 or |
| 7 | * (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #include "hw.h" |
| 11 | #include "isa.h" |
| 12 | |
| 13 | #define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit" |
| 14 | #define ISA_DEBUG_EXIT_DEVICE(obj) \ |
| 15 | OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE) |
| 16 | |
| 17 | typedef struct ISADebugExitState { |
| 18 | ISADevice parent_obj; |
| 19 | |
| 20 | uint32_t iobase; |
| 21 | uint32_t iosize; |
| 22 | MemoryRegion io; |
| 23 | } ISADebugExitState; |
| 24 | |
| 25 | static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val, |
| 26 | unsigned width) |
| 27 | { |
| 28 | exit((val << 1) | 1); |
| 29 | } |
| 30 | |
| 31 | static const MemoryRegionOps debug_exit_ops = { |
| 32 | .write = debug_exit_write, |
| 33 | .valid.min_access_size = 1, |
| 34 | .valid.max_access_size = 4, |
| 35 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 36 | }; |
| 37 | |
| 38 | static int debug_exit_initfn(ISADevice *dev) |
| 39 | { |
| 40 | ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(dev); |
| 41 | |
| 42 | memory_region_init_io(&isa->io, &debug_exit_ops, isa, |
| 43 | TYPE_ISA_DEBUG_EXIT_DEVICE, isa->iosize); |
| 44 | memory_region_add_subregion(isa_address_space_io(dev), |
| 45 | isa->iobase, &isa->io); |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | static Property debug_exit_properties[] = { |
| 50 | DEFINE_PROP_HEX32("iobase", ISADebugExitState, iobase, 0x501), |
| 51 | DEFINE_PROP_HEX32("iosize", ISADebugExitState, iosize, 0x02), |
| 52 | DEFINE_PROP_END_OF_LIST(), |
| 53 | }; |
| 54 | |
| 55 | static void debug_exit_class_initfn(ObjectClass *klass, void *data) |
| 56 | { |
| 57 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 58 | ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); |
| 59 | ic->init = debug_exit_initfn; |
| 60 | dc->props = debug_exit_properties; |
| 61 | } |
| 62 | |
Andreas Färber | 8c43a6f | 2013-01-10 16:19:07 +0100 | [diff] [blame] | 63 | static const TypeInfo debug_exit_info = { |
Gerd Hoffmann | bb355b1 | 2012-12-12 15:54:59 +0100 | [diff] [blame] | 64 | .name = TYPE_ISA_DEBUG_EXIT_DEVICE, |
| 65 | .parent = TYPE_ISA_DEVICE, |
| 66 | .instance_size = sizeof(ISADebugExitState), |
| 67 | .class_init = debug_exit_class_initfn, |
| 68 | }; |
| 69 | |
| 70 | static void debug_exit_register_types(void) |
| 71 | { |
| 72 | type_register_static(&debug_exit_info); |
| 73 | } |
| 74 | |
| 75 | type_init(debug_exit_register_types) |