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kern: use different psr masks for 64 and 32-bit El0 threads

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This commit is contained in:
Michael Scire 2023-02-21 03:20:49 -07:00
parent fd7a93a15f
commit 154d61f55f
4 changed files with 13 additions and 16 deletions
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3
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
View file

@ -36,6 +36,9 @@ namespace ams::kern::arch::arm64::cpu {
#error "Unknown Board for cpu::NumCores" #error "Unknown Board for cpu::NumCores"
#endif #endif
constexpr inline u32 El0Aarch64PsrMask = 0xF0000000;
constexpr inline u32 El0Aarch32PsrMask = 0xFE0FFE20;
/* Initialization. */ /* Initialization. */
NOINLINE void InitializeInterruptThreads(s32 core_id); NOINLINE void InitializeInterruptThreads(s32 core_id);

10
libraries/libmesosphere/source/arch/arm64/kern_exception_handlers.cpp
View file

@ -25,8 +25,6 @@ namespace ams::kern::arch::arm64 {
namespace { namespace {
constexpr inline u32 El0PsrMask = 0xFF0FFE20;
enum EsrEc : u32 { enum EsrEc : u32 {
EsrEc_Unknown = 0b000000, EsrEc_Unknown = 0b000000,
EsrEc_WaitForInterruptOrEvent = 0b000001, EsrEc_WaitForInterruptOrEvent = 0b000001,
@ -134,7 +132,7 @@ namespace ams::kern::arch::arm64 {
info->sp = context->sp; info->sp = context->sp;
info->lr = context->x[30]; info->lr = context->x[30];
info->pc = context->pc; info->pc = context->pc;
info->pstate = (context->psr & El0PsrMask); info->pstate = (context->psr & cpu::El0Aarch64PsrMask);
info->afsr0 = afsr0; info->afsr0 = afsr0;
info->afsr1 = afsr1; info->afsr1 = afsr1;
info->esr = esr; info->esr = esr;
@ -151,7 +149,7 @@ namespace ams::kern::arch::arm64 {
info->pc = context->pc; info->pc = context->pc;
info->flags = 1; info->flags = 1;
info->status_64.pstate = (context->psr & El0PsrMask); info->status_64.pstate = (context->psr & cpu::El0Aarch32PsrMask);
info->status_64.afsr0 = afsr0; info->status_64.afsr0 = afsr0;
info->status_64.afsr1 = afsr1; info->status_64.afsr1 = afsr1;
info->status_64.esr = esr; info->status_64.esr = esr;
@ -399,7 +397,7 @@ namespace ams::kern::arch::arm64 {
e_ctx->x[30] = info.info64.lr; e_ctx->x[30] = info.info64.lr;
e_ctx->sp = info.info64.sp; e_ctx->sp = info.info64.sp;
e_ctx->pc = info.info64.pc; e_ctx->pc = info.info64.pc;
e_ctx->psr = (info.info64.pstate & El0PsrMask) | (e_ctx->psr & ~El0PsrMask); e_ctx->psr = (info.info64.pstate & cpu::El0Aarch64PsrMask) | (e_ctx->psr & ~cpu::El0Aarch64PsrMask);
} else { } else {
for (size_t i = 0; i < util::size(info.info32.r); ++i) { for (size_t i = 0; i < util::size(info.info32.r); ++i) {
e_ctx->x[i] = info.info32.r[i]; e_ctx->x[i] = info.info32.r[i];
@ -407,7 +405,7 @@ namespace ams::kern::arch::arm64 {
e_ctx->x[14] = info.info32.lr; e_ctx->x[14] = info.info32.lr;
e_ctx->x[13] = info.info32.sp; e_ctx->x[13] = info.info32.sp;
e_ctx->pc = info.info32.pc; e_ctx->pc = info.info32.pc;
e_ctx->psr = (info.info32.status_64.pstate & El0PsrMask) | (e_ctx->psr & ~El0PsrMask); e_ctx->psr = (info.info32.status_64.pstate & cpu::El0Aarch32PsrMask) | (e_ctx->psr & ~cpu::El0Aarch32PsrMask);
} }
/* Note that PC was adjusted. */ /* Note that PC was adjusted. */

10
libraries/libmesosphere/source/arch/arm64/kern_k_debug.cpp
View file

@ -37,8 +37,6 @@ namespace ams::kern::arch::arm64 {
static_assert(ForbiddenWatchPointFlagsMask == 0xFFFFFFFF00F0E006ul); static_assert(ForbiddenWatchPointFlagsMask == 0xFFFFFFFF00F0E006ul);
constexpr inline u32 El0PsrMask = 0xFF0FFE20;
} }
uintptr_t KDebug::GetProgramCounter(const KThread &thread) { uintptr_t KDebug::GetProgramCounter(const KThread &thread) {
@ -104,7 +102,7 @@ namespace ams::kern::arch::arm64 {
out->lr = e_ctx->x[30]; out->lr = e_ctx->x[30];
out->sp = e_ctx->sp; out->sp = e_ctx->sp;
out->pc = e_ctx->pc; out->pc = e_ctx->pc;
out->pstate = (e_ctx->psr & El0PsrMask); out->pstate = (e_ctx->psr & cpu::El0Aarch64PsrMask);
/* Adjust PC if we should. */ /* Adjust PC if we should. */
if (e_ctx->write == 0 && thread->IsCallingSvc()) { if (e_ctx->write == 0 && thread->IsCallingSvc()) {
@ -119,7 +117,7 @@ namespace ams::kern::arch::arm64 {
out->lr = 0; out->lr = 0;
out->sp = 0; out->sp = 0;
out->pc = e_ctx->pc; out->pc = e_ctx->pc;
out->pstate = (e_ctx->psr & El0PsrMask); out->pstate = (e_ctx->psr & cpu::El0Aarch32PsrMask);
/* Adjust PC if we should. */ /* Adjust PC if we should. */
if (e_ctx->write == 0 && thread->IsCallingSvc()) { if (e_ctx->write == 0 && thread->IsCallingSvc()) {
@ -166,7 +164,7 @@ namespace ams::kern::arch::arm64 {
e_ctx->x[30] = ctx.lr; e_ctx->x[30] = ctx.lr;
e_ctx->sp = ctx.sp; e_ctx->sp = ctx.sp;
e_ctx->pc = ctx.pc; e_ctx->pc = ctx.pc;
e_ctx->psr = ((ctx.pstate & El0PsrMask) | (e_ctx->psr & ~El0PsrMask)); e_ctx->psr = ((ctx.pstate & cpu::El0Aarch64PsrMask) | (e_ctx->psr & ~cpu::El0Aarch64PsrMask));
e_ctx->tpidr = ctx.tpidr; e_ctx->tpidr = ctx.tpidr;
} else { } else {
e_ctx->x[13] = static_cast<u32>(ctx.r[13]); e_ctx->x[13] = static_cast<u32>(ctx.r[13]);
@ -174,7 +172,7 @@ namespace ams::kern::arch::arm64 {
e_ctx->x[30] = 0; e_ctx->x[30] = 0;
e_ctx->sp = 0; e_ctx->sp = 0;
e_ctx->pc = static_cast<u32>(ctx.pc); e_ctx->pc = static_cast<u32>(ctx.pc);
e_ctx->psr = ((ctx.pstate & El0PsrMask) | (e_ctx->psr & ~El0PsrMask)); e_ctx->psr = ((ctx.pstate & cpu::El0Aarch32PsrMask) | (e_ctx->psr & ~cpu::El0Aarch32PsrMask));
e_ctx->tpidr = ctx.tpidr; e_ctx->tpidr = ctx.tpidr;
} }
} }

6
libraries/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
View file

@ -40,8 +40,6 @@ namespace ams::kern::arch::arm64 {
namespace { namespace {
constexpr inline u32 El0PsrMask = 0xFF0FFE20;
ALWAYS_INLINE bool IsFpuEnabled() { ALWAYS_INLINE bool IsFpuEnabled() {
return cpu::ArchitecturalFeatureAccessControlRegisterAccessor().IsFpEnabled(); return cpu::ArchitecturalFeatureAccessControlRegisterAccessor().IsFpEnabled();
} }
@ -191,7 +189,7 @@ namespace ams::kern::arch::arm64 {
out->lr = e_ctx->x[30]; out->lr = e_ctx->x[30];
out->sp = e_ctx->sp; out->sp = e_ctx->sp;
out->pc = e_ctx->pc; out->pc = e_ctx->pc;
out->pstate = e_ctx->psr & El0PsrMask; out->pstate = e_ctx->psr & cpu::El0Aarch64PsrMask;
/* Get the thread's general purpose registers. */ /* Get the thread's general purpose registers. */
if (thread->IsCallingSvc()) { if (thread->IsCallingSvc()) {
@ -227,7 +225,7 @@ namespace ams::kern::arch::arm64 {
} else { } else {
/* Set special registers. */ /* Set special registers. */
out->pc = static_cast<u32>(e_ctx->pc); out->pc = static_cast<u32>(e_ctx->pc);
out->pstate = e_ctx->psr & El0PsrMask; out->pstate = e_ctx->psr & cpu::El0Aarch32PsrMask;
/* Get the thread's general purpose registers. */ /* Get the thread's general purpose registers. */
for (size_t i = 0; i < 15; ++i) { for (size_t i = 0; i < 15; ++i) {