debug.cpp revision 95b0899ad3412596baa600b22ea2ecd7dd1acc43 
1#include <inttypes.h>
2
3/*
4 * Dump the fixed-purpose ARM registers, along with some other info.
5 *
6 * This function MUST be compiled in ARM mode -- THUMB will yield bogus
7 * results.
8 *
9 * This will NOT preserve r0-r3/ip.
10 */
11void dvmMterpDumpArmRegs(uint32_t r0, uint32_t r1, uint32_t r2, uint32_t r3)
12{
13  // TODO: Clang does not support asm declaration syntax.
14#ifndef __clang__
15    register uint32_t rPC       asm("r4");
16    register uint32_t rFP       asm("r5");
17    register uint32_t rSELF     asm("r6");
18    register uint32_t rINST     asm("r7");
19    register uint32_t rIBASE    asm("r8");
20    register uint32_t r9        asm("r9");
21    register uint32_t r10       asm("r10");
22
23    //extern char dvmAsmInstructionStart[];
24
25    printf("REGS: r0=%08x r1=%08x r2=%08x r3=%08x\n", r0, r1, r2, r3);
26    printf("    : rPC=%08x rFP=%08x rSELF=%08x rINST=%08x\n",
27        rPC, rFP, rSELF, rINST);
28    printf("    : rIBASE=%08x r9=%08x r10=%08x\n", rIBASE, r9, r10);
29#endif
30
31    //Thread* self = (Thread*) rSELF;
32    //const Method* method = self->method;
33    printf("    + self is %p\n", dvmThreadSelf());
34    //printf("    + currently in %s.%s %s\n",
35    //    method->clazz->descriptor, method->name, method->shorty);
36    //printf("    + dvmAsmInstructionStart = %p\n", dvmAsmInstructionStart);
37    //printf("    + next handler for 0x%02x = %p\n",
38    //    rINST & 0xff, dvmAsmInstructionStart + (rINST & 0xff) * 64);
39}
40
41/*
42 * Dump the StackSaveArea for the specified frame pointer.
43 */
44void dvmDumpFp(void* fp, StackSaveArea* otherSaveArea)
45{
46    StackSaveArea* saveArea = SAVEAREA_FROM_FP(fp);
47    printf("StackSaveArea for fp %p [%p/%p]:\n", fp, saveArea, otherSaveArea);
48#ifdef EASY_GDB
49    printf("  prevSave=%p, prevFrame=%p savedPc=%p meth=%p curPc=%p\n",
50        saveArea->prevSave, saveArea->prevFrame, saveArea->savedPc,
51        saveArea->method, saveArea->xtra.currentPc);
52#else
53    printf("  prevFrame=%p savedPc=%p meth=%p curPc=%p fp[0]=0x%08x\n",
54        saveArea->prevFrame, saveArea->savedPc,
55        saveArea->method, saveArea->xtra.currentPc,
56        *(u4*)fp);
57#endif
58}
59
60/*
61 * Does the bulk of the work for common_printMethod().
62 */
63void dvmMterpPrintMethod(Method* method)
64{
65    /*
66     * It is a direct (non-virtual) method if it is static, private,
67     * or a constructor.
68     */
69    bool isDirect =
70        ((method->accessFlags & (ACC_STATIC|ACC_PRIVATE)) != 0) ||
71        (method->name[0] == '<');
72
73    char* desc = dexProtoCopyMethodDescriptor(&method->prototype);
74
75    printf("<%c:%s.%s %s> ",
76            isDirect ? 'D' : 'V',
77            method->clazz->descriptor,
78            method->name,
79            desc);
80
81    free(desc);
82}
83