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Fix printing of x86_64 registers from minidump_stackwalk

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R=mark at http://breakpad.appspot.com/262001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@772 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2011-02-14 19:23:35 +00:00
parent 0afda6b2c2
commit 1530800640
1 changed files with 35 additions and 15 deletions
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50
src/processor/minidump_stackwalk.cc
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@ -78,18 +78,37 @@ static const char kOutputSeparator = '|';
// PrintRegister prints a register's name and value to stdout. It will // PrintRegister prints a register's name and value to stdout. It will
// print four registers on a line. For the first register in a set, // print four registers on a line. For the first register in a set,
// pass 0 for |sequence|. For registers in a set, pass the most recent // pass 0 for |start_col|. For registers in a set, pass the most recent
// return value of PrintRegister. Note that PrintRegister will print a // return value of PrintRegister.
// newline before the first register (with |sequence| set to 0) is printed.
// The caller is responsible for printing the final newline after a set // The caller is responsible for printing the final newline after a set
// of registers is completely printed, regardless of the number of calls // of registers is completely printed, regardless of the number of calls
// to PrintRegister. // to PrintRegister.
static int PrintRegister(const char *name, u_int32_t value, int sequence) { static const int kMaxWidth = 80; // optimize for an 80-column terminal
if (sequence % 4 == 0) { static int PrintRegister(const char *name, u_int32_t value, int start_col) {
char buffer[64];
snprintf(buffer, sizeof(buffer), " %5s = 0x%08x", name, value);
if (start_col + strlen(buffer) > kMaxWidth) {
start_col = 0;
printf("\n "); printf("\n ");
} }
printf(" %5s = 0x%08x", name, value); fputs(buffer, stdout);
return ++sequence;
return start_col + strlen(buffer);
}
// PrintRegister64 does the same thing, but for 64-bit registers.
static int PrintRegister64(const char *name, u_int64_t value, int start_col) {
char buffer[64];
snprintf(buffer, sizeof(buffer), " %5s = 0x%016" PRIx64 , name, value);
if (start_col + strlen(buffer) > kMaxWidth) {
start_col = 0;
printf("\n ");
}
fputs(buffer, stdout);
return start_col + strlen(buffer);
} }
// StripSeparator takes a string |original| and returns a copy // StripSeparator takes a string |original| and returns a copy
@ -142,6 +161,7 @@ static void PrintStack(const CallStack *stack, const string &cpu) {
} else { } else {
printf("0x%" PRIx64, frame->instruction); printf("0x%" PRIx64, frame->instruction);
} }
printf("\n ");
int sequence = 0; int sequence = 0;
if (cpu == "x86") { if (cpu == "x86") {
@ -179,21 +199,21 @@ static void PrintStack(const CallStack *stack, const string &cpu) {
reinterpret_cast<const StackFrameAMD64*>(frame); reinterpret_cast<const StackFrameAMD64*>(frame);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBX) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBX)
sequence = PrintRegister("rbx", frame_amd64->context.rbx, sequence); sequence = PrintRegister64("rbx", frame_amd64->context.rbx, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R12) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R12)
sequence = PrintRegister("r12", frame_amd64->context.r12, sequence); sequence = PrintRegister64("r12", frame_amd64->context.r12, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R13) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R13)
sequence = PrintRegister("r13", frame_amd64->context.r13, sequence); sequence = PrintRegister64("r13", frame_amd64->context.r13, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R14) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R14)
sequence = PrintRegister("r14", frame_amd64->context.r14, sequence); sequence = PrintRegister64("r14", frame_amd64->context.r14, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R15) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R15)
sequence = PrintRegister("r15", frame_amd64->context.r15, sequence); sequence = PrintRegister64("r15", frame_amd64->context.r15, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RIP) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RIP)
sequence = PrintRegister("rip", frame_amd64->context.rip, sequence); sequence = PrintRegister64("rip", frame_amd64->context.rip, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP)
sequence = PrintRegister("rsp", frame_amd64->context.rsp, sequence); sequence = PrintRegister64("rsp", frame_amd64->context.rsp, sequence);
if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBP) if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBP)
sequence = PrintRegister("rbp", frame_amd64->context.rbp, sequence); sequence = PrintRegister64("rbp", frame_amd64->context.rbp, sequence);
} else if (cpu == "sparc") { } else if (cpu == "sparc") {
const StackFrameSPARC *frame_sparc = const StackFrameSPARC *frame_sparc =
reinterpret_cast<const StackFrameSPARC*>(frame); reinterpret_cast<const StackFrameSPARC*>(frame);