OmniNX/Atmosphere
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thermosphere: major refactor of memory map

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- use recursive stage 1 page table (thanks @fincs for this idea)
- NULL now unmapped
- no identity mapping
- image + GICv2 now mapped at the same address for every platform
- tempbss mapped just after "real" bss, can now steal unused mem from
the latter
- no hardcoded VAs for other MMIO devices
- tegra: remove timers, use the generic timer instead
This commit is contained in:
TuxSH
2020-01-17 22:10:26 +00:00
parent 5eb2d79996
commit 7553580b64
47 changed files with 795 additions and 469 deletions
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21
thermosphere/src/exceptions.c
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@@ -61,7 +61,7 @@ void dumpStackFrame(const ExceptionStackFrame *frame, bool sameEl)
DEBUG("x30\t\t%016llx\n\n", frame->x[30]);
DEBUG("elr_el2\t\t%016llx\n", frame->elr_el2);
DEBUG("spsr_el2\t%016llx\n", frame->spsr_el2);
DEBUG("far_el2\t%016llx\n", frame->far_el2);
DEBUG("far_el2\t\t%016llx\n", frame->far_el2);
if (sameEl) {
DEBUG("sp_el2\t\t%016llx\n", frame->sp_el2);
} else {
@@ -96,9 +96,8 @@ void skipFaultingInstruction(ExceptionStackFrame *frame, u32 size)
frame->elr_el2 += size;
}
void exceptionEnterInterruptibleHypervisorCode(ExceptionStackFrame *frame)
void exceptionEnterInterruptibleHypervisorCode(void)
{
(void)frame;
// We don't want the guest to spam us with its timer interrupts. Disable the timers.
SET_SYSREG(cntp_ctl_el0, 0);
SET_SYSREG(cntv_ctl_el0, 0);
@@ -107,8 +106,10 @@ void exceptionEnterInterruptibleHypervisorCode(ExceptionStackFrame *frame)
// Called on exception entry (avoids overflowing a vector section)
void exceptionEntryPostprocess(ExceptionStackFrame *frame, bool isLowerEl)
{
frame->cntp_ctl_el0 = GET_SYSREG(cntp_ctl_el0);
frame->cntv_ctl_el0 = GET_SYSREG(cntv_ctl_el0);
if (frame == currentCoreCtx->guestFrame) {
frame->cntp_ctl_el0 = GET_SYSREG(cntp_ctl_el0);
frame->cntv_ctl_el0 = GET_SYSREG(cntv_ctl_el0);
}
}
// Called on exception return (avoids overflowing a vector section)
@@ -116,7 +117,7 @@ void exceptionReturnPreprocess(ExceptionStackFrame *frame)
{
if (currentCoreCtx->wasPaused && frame == currentCoreCtx->guestFrame) {
// Were we paused & are we about to return to the guest?
exceptionEnterInterruptibleHypervisorCode(frame);
exceptionEnterInterruptibleHypervisorCode();
debugPauseWaitAndUpdateSingleStep();
}
@@ -124,9 +125,11 @@ void exceptionReturnPreprocess(ExceptionStackFrame *frame)
currentCoreCtx->totalTimeInHypervisor += timerGetSystemTick() - frame->cntpct_el0;
SET_SYSREG(cntvoff_el2, currentCoreCtx->totalTimeInHypervisor);
// Restore interrupt mask
SET_SYSREG(cntp_ctl_el0, frame->cntp_ctl_el0);
SET_SYSREG(cntv_ctl_el0, frame->cntv_ctl_el0);
if (frame == currentCoreCtx->guestFrame) {
// Restore interrupt mask
SET_SYSREG(cntp_ctl_el0, frame->cntp_ctl_el0);
SET_SYSREG(cntv_ctl_el0, frame->cntv_ctl_el0);
}
}
void handleLowerElSyncException(ExceptionStackFrame *frame, ExceptionSyndromeRegister esr)