creport: fix various issues, improve support (closes #187)

-Fixes a NULL deref in thread info parsing
-Heuristically uses [<buildid>] instead of rodata contents if NSO has no
name segment
-Adds full thread/code region dump for all firmwares, instead of just
5.x.

stratosphere/creport/source/creport_code_info.cpp

@@ -36,8 +36,14 @@ void CodeList::ReadCodeRegionsFromProcess(Handle debug_handle, u64 pc, u64 lr) {
             /* Parse CodeInfo. */
             this->code_infos[this->code_count].start_address = mi.addr;
             this->code_infos[this->code_count].end_address = mi.addr + mi.size; 
-            GetCodeInfoName(debug_handle, mi.addr + mi.size, this->code_infos[this->code_count].name);
+            GetCodeInfoName(debug_handle, mi.addr, mi.addr + mi.size, this->code_infos[this->code_count].name);
             GetCodeInfoBuildId(debug_handle, mi.addr + mi.size, this->code_infos[this->code_count].build_id);
+			if (this->code_infos[this->code_count].name[0] == '\x00') {
+				snprintf(this->code_infos[this->code_count].name, 0x1F, "[%02x%02x%02x%02x]", this->code_infos[this->code_count].build_id[0], 
+																							 this->code_infos[this->code_count].build_id[1], 
+																							 this->code_infos[this->code_count].build_id[2], 
+																							 this->code_infos[this->code_count].build_id[3]);
+			}
             this->code_count++;
         }
         
@@ -79,12 +85,38 @@ bool CodeList::TryFindCodeRegion(Handle debug_handle, u64 guess, u64 *address) {
     return false;
 }
 
-void CodeList::GetCodeInfoName(u64 debug_handle, u64 rodata_addr, char *name) {
+void CodeList::GetCodeInfoName(u64 debug_handle, u64 rx_address, u64 rodata_addr, char *name) {
     char name_in_proc[0x200];
     
     /* Clear name. */
     memset(name, 0, 0x20);
 	
+	/* Check whether this NSO *has* a name... */
+	{
+		u64 rodata_start[0x20/sizeof(u64)];
+		MemoryInfo mi;
+		u32 pi;
+		u64 rw_address;
+		
+		/* Verify .rodata is read-only. */
+		if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, rodata_addr)) || mi.perm != Perm_R) {
+			return;
+		}
+		
+		/* rwdata is after rodata. */
+		rw_address = mi.addr + mi.size;
+		
+		/* Read start of .rodata. */
+		if (R_FAILED(svcReadDebugProcessMemory(rodata_start, debug_handle, rodata_addr, sizeof(rodata_start)))) {
+			return;
+		}
+		
+		/* Check if name section is present. */
+		if (rodata_start[0] == (rw_address - rx_address)) {
+			return;
+		}
+	}
+    
     /* Read name out of .rodata. */
     if (R_FAILED(svcReadDebugProcessMemory(name_in_proc, debug_handle, rodata_addr + 8, sizeof(name_in_proc)))) {
         return;

stratosphere/creport/source/creport_code_info.hpp

@@ -25,6 +25,6 @@ class CodeList {
         void SaveToFile(FILE *f_report);
     private:
         bool TryFindCodeRegion(Handle debug_handle, u64 guess, u64 *address);
-        void GetCodeInfoName(u64 debug_handle, u64 ro_address, char *name);
+        void GetCodeInfoName(u64 debug_handle, u64 rx_address, u64 ro_address, char *name);
         void GetCodeInfoBuildId(u64 debug_handle, u64 ro_address, u8 *build_id);
 };

stratosphere/creport/source/creport_crash_report.cpp

@@ -11,10 +11,9 @@ void CrashReport::BuildReport(u64 pid, bool has_extra_info) {
     this->has_extra_info = has_extra_info;
     if (OpenProcess(pid)) {
         ProcessExceptions();
-        if (kernelAbove500()) {
 		this->code_list.ReadCodeRegionsFromProcess(this->debug_handle, this->crashed_thread_info.GetPC(), this->crashed_thread_info.GetLR());
 		this->thread_list.ReadThreadsFromProcess(this->debug_handle, Is64Bit());
-        }
+		this->crashed_thread_info.SetCodeList(&this->code_list);
         this->thread_list.SetCodeList(&this->code_list);
         
         if (IsApplication()) {
@@ -287,11 +286,11 @@ void CrashReport::SaveToFile(FILE *f_report) {
             fprintf(f_report, "    Size:                        0x%016lx\n", this->dying_message_size);
             CrashReport::Memdump(f_report, "    Dying Message:              ", this->dying_message, this->dying_message_size);
         }
+    }
 	fprintf(f_report, "Code Region Info:\n");
 	this->code_list.SaveToFile(f_report);
 	fprintf(f_report, "\nThread Report:\n");
 	this->thread_list.SaveToFile(f_report);
-    }
 }
 
 /* Lifted from hactool. */