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thermosphere: reload debug registers (refactored)

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This commit is contained in:
TuxSH 2020-03-09 18:42:53 +00:00
parent 6bcb5aca60
commit f40c064e80
2 changed files with 28 additions and 2 deletions
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15
thermosphere/src/hvisor_hw_breakpoint_manager.cpp
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@ -20,13 +20,26 @@
#define _REENT_ONLY
#include <cerrno>
// Can't use two THERMOSPHERE_SAVE_SYSREG as it prevents ldp from being generated
#define SAVE_BREAKPOINT(i, _)\
__asm__ __volatile__ (\
"msr " STRINGIZE(dbgbvr##i##_el1) ", %0\n"\
"msr " STRINGIZE(dbgbcr##i##_el1) ", %1"\
:\
: "r"(m_stopPoints[i].vr), "r"(m_stopPoints[i].cr.raw)\
: "memory"\
);
namespace ams::hvisor {
HwBreakpointManager HwBreakpointManager::instance{};
void HwBreakpointManager::Reload() const
{
// TODO
cpu::dmb();
EVAL(REPEAT(MAX_BCR, SAVE_BREAKPOINT, ~));
cpu::dsb();
cpu::isb();
}
bool HwBreakpointManager::FindPredicate(const cpu::DebugRegisterPair &pair, uintptr_t addr, size_t, cpu::DebugRegisterPair::LoadStoreControl) const

15
thermosphere/src/hvisor_watchpoint_manager.cpp
View file

@ -21,6 +21,16 @@
#define _REENT_ONLY
#include <cerrno>
// Can't use two THERMOSPHERE_SAVE_SYSREG as it prevents ldp from being generated
#define SAVE_WATCHPOINT(i, _)\
__asm__ __volatile__ (\
"msr " STRINGIZE(dbgwvr##i##_el1) ", %0\n"\
"msr " STRINGIZE(dbgwcr##i##_el1) ", %1"\
:\
: "r"(m_stopPoints[i].vr), "r"(m_stopPoints[i].cr.raw)\
: "memory"\
);
namespace {
constexpr bool IsRangeMaskWatchpoint(uintptr_t addr, size_t size)
@ -49,7 +59,10 @@ namespace ams::hvisor {
void WatchpointManager::Reload() const
{
// TODO
cpu::dmb();
EVAL(REPEAT(MAX_WCR, SAVE_WATCHPOINT, ~));
cpu::dsb();
cpu::isb();
}
bool WatchpointManager::FindPredicate(const cpu::DebugRegisterPair &pair, uintptr_t addr, size_t size, cpu::DebugRegisterPair::LoadStoreControl direction) const