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git subrepo clone https://github.com/Atmosphere-NX/Atmosphere-libs libraries

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subrepo:
  subdir:   "libraries"
  merged:   "07af583b"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "07af583b"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"
This commit is contained in:
Michael Scire 2019-12-09 03:57:37 -08:00 • committed by SciresM
parent 28717bfd27
commit 0105455086
294 changed files with 29915 additions and 0 deletions
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176
libraries/libstratosphere/source/ams/ams_environment.cpp Normal file
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/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "ams_bpc.h"
namespace ams {
namespace {
inline u64 GetPc() {
u64 pc;
__asm__ __volatile__ ("adr %[pc], ." : [pc]"=&r"(pc) :: );
return pc;
}
struct StackFrame {
u64 fp;
u64 lr;
};
}
extern ncm::ProgramId CurrentProgramId;
void WEAK ExceptionHandler(FatalErrorContext *ctx) {
R_ASSERT(amsBpcInitialize());
R_ASSERT(amsBpcRebootToFatalError(ctx));
while (1) { /* ... */ }
}
void CrashHandler(ThreadExceptionDump *ctx) {
FatalErrorContext ams_ctx;
/* Convert thread dump to atmosphere dump. */
{
ams_ctx.magic = FatalErrorContext::Magic;
ams_ctx.error_desc = ctx->error_desc;
ams_ctx.program_id = static_cast<u64>(CurrentProgramId);
for (size_t i = 0; i < FatalErrorContext::NumGprs; i++) {
ams_ctx.gprs[i] = ctx->cpu_gprs[i].x;
}
if (ams_ctx.error_desc == FatalErrorContext::DataAbortErrorDesc &&
ams_ctx.gprs[27] == FatalErrorContext::StdAbortMagicAddress &&
ams_ctx.gprs[28] == FatalErrorContext::StdAbortMagicValue)
{
/* Detect std::abort(). */
ams_ctx.error_desc = FatalErrorContext::StdAbortErrorDesc;
}
ams_ctx.fp = ctx->fp.x;
ams_ctx.lr = ctx->lr.x;
ams_ctx.sp = ctx->sp.x;
ams_ctx.pc = ctx->pc.x;
ams_ctx.pstate = ctx->pstate;
ams_ctx.afsr0 = ctx->afsr0;
ams_ctx.afsr1 = ctx->afsr1;
ams_ctx.far = ctx->far.x;
ams_ctx.report_identifier = armGetSystemTick();
/* Grab module base. */
{
MemoryInfo mem_info;
u32 page_info;
if (R_SUCCEEDED(svcQueryMemory(&mem_info, &page_info, GetPc()))) {
ams_ctx.module_base = mem_info.addr;
} else {
ams_ctx.module_base = 0;
}
}
ams_ctx.stack_trace_size = 0;
u64 cur_fp = ams_ctx.fp;
for (size_t i = 0; i < FatalErrorContext::MaxStackTrace; i++) {
/* Validate current frame. */
if (cur_fp == 0 || (cur_fp & 0xF)) {
break;
}
/* Read a new frame. */
StackFrame cur_frame;
MemoryInfo mem_info;
u32 page_info;
if (R_SUCCEEDED(svcQueryMemory(&mem_info, &page_info, cur_fp)) && (mem_info.perm & Perm_R) == Perm_R) {
std::memcpy(&cur_frame, reinterpret_cast<void *>(cur_fp), sizeof(cur_frame));
} else {
break;
}
/* Advance to the next frame. */
ams_ctx.stack_trace[ams_ctx.stack_trace_size++] = cur_frame.lr;
cur_fp = cur_frame.fp;
}
/* Clear unused parts of stack trace. */
for (size_t i = ams_ctx.stack_trace_size; i < FatalErrorContext::MaxStackTrace; i++) {
ams_ctx.stack_trace[i] = 0;
}
/* Grab up to 0x100 of stack. */
{
MemoryInfo mem_info;
u32 page_info;
if (R_SUCCEEDED(svcQueryMemory(&mem_info, &page_info, ams_ctx.sp)) && (mem_info.perm & Perm_R) == Perm_R) {
size_t copy_size = std::min(FatalErrorContext::MaxStackDumpSize, static_cast<size_t>(mem_info.addr + mem_info.size - ams_ctx.sp));
ams_ctx.stack_dump_size = copy_size;
std::memcpy(ams_ctx.stack_dump, reinterpret_cast<void *>(ams_ctx.sp), copy_size);
} else {
ams_ctx.stack_dump_size = 0;
}
}
}
/* Just call the user exception handler. */
::ams::ExceptionHandler(&ams_ctx);
}
inline NORETURN void AbortImpl() {
/* Just perform a data abort. */
register u64 addr __asm__("x27") = FatalErrorContext::StdAbortMagicAddress;
register u64 val __asm__("x28") = FatalErrorContext::StdAbortMagicValue;
while (true) {
__asm__ __volatile__ (
"str %[val], [%[addr]]"
:
: [val]"r"(val), [addr]"r"(addr)
);
}
__builtin_unreachable();
}
}
extern "C" {
/* Redefine abort to trigger these handlers. */
void abort();
/* Redefine C++ exception handlers. Requires wrap linker flag. */
#define WRAP_ABORT_FUNC(func) void NORETURN __wrap_##func(void) { abort(); __builtin_unreachable(); }
WRAP_ABORT_FUNC(__cxa_pure_virtual)
WRAP_ABORT_FUNC(__cxa_throw)
WRAP_ABORT_FUNC(__cxa_rethrow)
WRAP_ABORT_FUNC(__cxa_allocate_exception)
WRAP_ABORT_FUNC(__cxa_free_exception)
WRAP_ABORT_FUNC(__cxa_begin_catch)
WRAP_ABORT_FUNC(__cxa_end_catch)
WRAP_ABORT_FUNC(__cxa_call_unexpected)
WRAP_ABORT_FUNC(__cxa_call_terminate)
WRAP_ABORT_FUNC(__gxx_personality_v0)
WRAP_ABORT_FUNC(_ZSt19__throw_logic_errorPKc)
WRAP_ABORT_FUNC(_ZSt20__throw_length_errorPKc)
WRAP_ABORT_FUNC(_ZNSt11logic_errorC2EPKc)
/* TODO: We may wish to consider intentionally not defining an _Unwind_Resume wrapper. */
/* This would mean that a failure to wrap all exception functions is a linker error. */
WRAP_ABORT_FUNC(_Unwind_Resume)
#undef WRAP_ABORT_FUNC
}
/* Custom abort handler, so that std::abort will trigger these. */
void abort() {
ams::AbortImpl();
__builtin_unreachable();
}