ReactOS 0.4.15-dev-8093-g3285f69
exp.c
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1/*
2 * PROJECT: ReactOS Kernel
3 * LICENSE: BSD - See COPYING.ARM in the top level directory
4 * FILE: ntoskrnl/ke/arm/exp.c
5 * PURPOSE: Implements exception helper routines for ARM machines
6 * PROGRAMMERS: ReactOS Portable Systems Group
7 */
8
9/* INCLUDES *******************************************************************/
10
11#include <ntoskrnl.h>
12#define NDEBUG
13#include <debug.h>
14
15/* FUNCTIONS ******************************************************************/
16
17VOID
20 IN OUT PKEXCEPTION_FRAME ExceptionFrame,
21 IN OUT PKTRAP_FRAME TrapFrame,
22 IN ULONG ContextFlags,
24{
26
27 //
28 // Do this at APC_LEVEL
29 //
32
33 //
34 // Start with the Control flags
35 //
36 if ((Context->ContextFlags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
37 {
38 //
39 // So this basically means all the special stuff
40 //
41
42 //
43 // ARM has register banks
44 //
45 TrapFrame->Sp = Context->Sp;
46 TrapFrame->Lr = Context->Lr;
47
48 //
49 // The rest is already in the right mode
50 //
51 TrapFrame->Pc = Context->Pc;
52 TrapFrame->Cpsr = Context->Cpsr;
53 }
54
55 //
56 // Now do the integers
57 //
58 if ((Context->ContextFlags & CONTEXT_INTEGER) == CONTEXT_INTEGER)
59 {
60 //
61 // Basically everything else but FPU
62 //
63 TrapFrame->R0 = Context->R0;
64 TrapFrame->R1 = Context->R1;
65 TrapFrame->R2 = Context->R2;
66 TrapFrame->R3 = Context->R3;
67 ExceptionFrame->R4 = Context->R4;
68 ExceptionFrame->R5 = Context->R5;
69 ExceptionFrame->R6 = Context->R6;
70 ExceptionFrame->R7 = Context->R7;
71 ExceptionFrame->R8 = Context->R8;
72 ExceptionFrame->R9 = Context->R9;
73 ExceptionFrame->R10 = Context->R10;
74 ExceptionFrame->R11 = Context->R11;
75 TrapFrame->R12 = Context->R12;
76 }
77
78 //
79 // Restore IRQL
80 //
82}
83
84VOID
87 IN PKEXCEPTION_FRAME ExceptionFrame,
89{
91
92 //
93 // Do this at APC_LEVEL
94 //
97
98 //
99 // Start with the Control flags
100 //
101 if ((Context->ContextFlags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
102 {
103 //
104 // So this basically means all the special stuff
105 //
106
107 //
108 // ARM has register banks
109 //
110 Context->Sp = TrapFrame->Sp;
111 Context->Lr = TrapFrame->Lr;
112
113 //
114 // The rest is already in the right mode
115 //
116 Context->Pc = TrapFrame->Pc;
117 Context->Cpsr = TrapFrame->Cpsr;
118 }
119
120 //
121 // Now do the integers
122 //
123 if ((Context->ContextFlags & CONTEXT_INTEGER) == CONTEXT_INTEGER)
124 {
125 //
126 // Basically everything else but FPU
127 //
128 Context->R0 = TrapFrame->R0;
129 Context->R1 = TrapFrame->R1;
130 Context->R2 = TrapFrame->R2;
131 Context->R3 = TrapFrame->R3;
132 Context->R4 = ExceptionFrame->R4;
133 Context->R5 = ExceptionFrame->R5;
134 Context->R6 = ExceptionFrame->R6;
135 Context->R7 = ExceptionFrame->R7;
136 Context->R8 = ExceptionFrame->R8;
137 Context->R9 = ExceptionFrame->R9;
138 Context->R10 = ExceptionFrame->R10;
139 Context->R11 = ExceptionFrame->R11;
140 Context->R12 = TrapFrame->R12;
141 }
142
143 //
144 // Restore IRQL
145 //
147}
148
149VOID
150NTAPI
152 IN PKEXCEPTION_FRAME ExceptionFrame,
153 IN PKTRAP_FRAME TrapFrame,
155 IN BOOLEAN FirstChance)
156{
158
159 /* Increase number of Exception Dispatches */
160 KeGetCurrentPrcb()->KeExceptionDispatchCount++;
161
162 /* Set the context flags */
163 Context.ContextFlags = CONTEXT_FULL;
164
165 /* Check if User Mode or if the kernel debugger is enabled */
167 {
168 /* FIXME-V6: VFP Support */
169 }
170
171 /* Get a Context */
172 KeTrapFrameToContext(TrapFrame, ExceptionFrame, &Context);
173
174 /* Look at our exception code */
175 switch (ExceptionRecord->ExceptionCode)
176 {
177 /* Breakpoint */
179
180 /* Decrement PC by four */
181 Context.Pc -= sizeof(ULONG);
182 break;
183
184 /* Internal exception */
186
187 /* Set correct code */
188 ExceptionRecord->ExceptionCode = STATUS_ACCESS_VIOLATION;
189 if (PreviousMode == UserMode)
190 {
191 /* FIXME: Handle no execute */
192 }
193 break;
194 }
195
196 /* Handle kernel-mode first, it's simpler */
198 {
199 /* Check if this is a first-chance exception */
200 if (FirstChance != FALSE)
201 {
202 /* Break into the debugger for the first time */
203 if (KiDebugRoutine(TrapFrame,
204 ExceptionFrame,
205 ExceptionRecord,
206 &Context,
208 FALSE))
209 {
210 /* Exception was handled */
211 goto Handled;
212 }
213
214 /* If the Debugger couldn't handle it, dispatch the exception */
215 if (RtlDispatchException(ExceptionRecord, &Context)) goto Handled;
216 }
217
218 /* This is a second-chance exception, only for the debugger */
219 if (KiDebugRoutine(TrapFrame,
220 ExceptionFrame,
221 ExceptionRecord,
222 &Context,
224 TRUE))
225 {
226 /* Exception was handled */
227 goto Handled;
228 }
229
230 /* Third strike; you're out */
231 KeBugCheckEx(KMODE_EXCEPTION_NOT_HANDLED,
232 ExceptionRecord->ExceptionCode,
233 (ULONG_PTR)ExceptionRecord->ExceptionAddress,
234 (ULONG_PTR)TrapFrame,
235 0);
236 }
237 else
238 {
239 /* FIXME: TODO */
240 /* 3rd strike, kill the process */
241 DPRINT1("Kill %.16s, ExceptionCode: %lx, ExceptionAddress: %lx\n",
242 PsGetCurrentProcess()->ImageFileName,
243 ExceptionRecord->ExceptionCode,
244 ExceptionRecord->ExceptionAddress);
245
246 ZwTerminateProcess(NtCurrentProcess(), ExceptionRecord->ExceptionCode);
247 KeBugCheckEx(KMODE_EXCEPTION_NOT_HANDLED,
248 ExceptionRecord->ExceptionCode,
249 (ULONG_PTR)ExceptionRecord->ExceptionAddress,
250 (ULONG_PTR)TrapFrame,
251 0);
252 }
253
254Handled:
255 /* Convert the context back into Trap/Exception Frames */
257 ExceptionFrame,
258 TrapFrame,
259 Context.ContextFlags,
261 return;
262}
263
265NTAPI
268{
269 ASSERT(FALSE);
271}
unsigned char BOOLEAN
VOID NTAPI KeTrapFrameToContext(IN PKTRAP_FRAME TrapFrame, IN PKEXCEPTION_FRAME ExceptionFrame, IN OUT PCONTEXT Context)
Definition: exp.c:86
VOID NTAPI KiDispatchException(IN PEXCEPTION_RECORD ExceptionRecord, IN PKEXCEPTION_FRAME ExceptionFrame, IN PKTRAP_FRAME TrapFrame, IN KPROCESSOR_MODE PreviousMode, IN BOOLEAN FirstChance)
Definition: exp.c:151
NTSTATUS NTAPI KeRaiseUserException(_In_ NTSTATUS ExceptionCode)
Definition: exp.c:266
VOID NTAPI KeContextToTrapFrame(IN PCONTEXT Context, IN OUT PKEXCEPTION_FRAME ExceptionFrame, IN OUT PKTRAP_FRAME TrapFrame, IN ULONG ContextFlags, IN KPROCESSOR_MODE PreviousMode)
Definition: exp.c:19
LONG NTSTATUS
Definition: precomp.h:26
#define DPRINT1
Definition: precomp.h:8
_Inout_ PIRP _In_ NTSTATUS ExceptionCode
Definition: cdprocs.h:1774
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
UCHAR KIRQL
Definition: env_spec_w32.h:591
#define KeRaiseIrql(irql, oldIrql)
Definition: env_spec_w32.h:597
#define APC_LEVEL
Definition: env_spec_w32.h:695
#define KeLowerIrql(oldIrql)
Definition: env_spec_w32.h:602
#define KeGetCurrentIrql()
Definition: env_spec_w32.h:706
DBGKD_GET_VERSION64 KdVersionBlock
Definition: kddata.c:495
PKDEBUG_ROUTINE KiDebugRoutine
Definition: kddata.c:74
#define ASSERT(a)
Definition: mode.c:44
#define _In_
Definition: ms_sal.h:308
#define KernelMode
Definition: asm.h:34
#define UserMode
Definition: asm.h:35
FORCEINLINE struct _KPRCB * KeGetCurrentPrcb(VOID)
Definition: ketypes.h:1161
#define KeGetPcr()
Definition: ketypes.h:81
#define KI_EXCEPTION_ACCESS_VIOLATION
Definition: ketypes.h:144
NTSYSAPI BOOLEAN NTAPI RtlDispatchException(_In_ PEXCEPTION_RECORD ExceptionRecord, _In_ PCONTEXT Context)
Definition: except.c:43
#define CONTEXT_CONTROL
Definition: nt_native.h:1369
#define CONTEXT_INTEGER
Definition: nt_native.h:1370
#define NtCurrentProcess()
Definition: nt_native.h:1657
#define CONTEXT_FULL
Definition: nt_native.h:1375
#define STATUS_BREAKPOINT
Definition: ntstatus.h:184
#define STATUS_ACCESS_VIOLATION
Definition: ntstatus.h:242
#define STATUS_NOT_IMPLEMENTED
Definition: ntstatus.h:239
VOID NTAPI KeBugCheckEx(_In_ ULONG BugCheckCode, _In_ ULONG_PTR BugCheckParameter1, _In_ ULONG_PTR BugCheckParameter2, _In_ ULONG_PTR BugCheckParameter3, _In_ ULONG_PTR BugCheckParameter4)
Definition: rtlcompat.c:108
#define NTAPI
Definition: typedefs.h:36
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define IN
Definition: typedefs.h:39
uint32_t ULONG
Definition: typedefs.h:59
#define OUT
Definition: typedefs.h:40
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:778
CCHAR KPROCESSOR_MODE
Definition: ketypes.h:7
_In_ BOOLEAN Handled
Definition: ketypes.h:349
#define PsGetCurrentProcess
Definition: psfuncs.h:17
_In_ KPROCESSOR_MODE PreviousMode
Definition: sefuncs.h:103