OmniNX/Atmosphere
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

kern: implement new thread context/fpu semantics

Browse Source
This commit is contained in:
Michael Scire
2022-03-22 19:59:39 -07:00
committed by SciresM
parent 79afa3b64c
commit 6e17317d5d
21 changed files with 1291 additions and 668 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
libraries/libmesosphere/source/arch/arm64/kern_k_debug.cpp
View File

@@ -202,16 +202,13 @@ namespace ams::kern::arch::arm64 {
/* Get the FPU registers, if required. */
if ((context_flags & ams::svc::ThreadContextFlag_Fpu) != 0) {
static_assert(util::size(ams::svc::ThreadContext{}.v) == KThreadContext::NumFpuRegisters);
const u128 *f = t_ctx->GetFpuRegisters();
const auto &caller_save = thread->GetCallerSaveFpuRegisters();
const auto &callee_save = t_ctx->GetCalleeSaveFpuRegisters();
if (this->Is64Bit()) {
for (size_t i = 0; i < KThreadContext::NumFpuRegisters; ++i) {
out->v[i] = f[i];
}
KThreadContext::GetFpuRegisters(out->v, caller_save.fpu64, callee_save.fpu64);
} else {
for (size_t i = 0; i < KThreadContext::NumFpuRegisters / 2; ++i) {
out->v[i] = f[i];
}
KThreadContext::GetFpuRegisters(out->v, caller_save.fpu32, callee_save.fpu32);
for (size_t i = KThreadContext::NumFpuRegisters / 2; i < KThreadContext::NumFpuRegisters; ++i) {
out->v[i] = 0;
}
@@ -240,7 +237,14 @@ namespace ams::kern::arch::arm64 {
/* Set the FPU registers, if required. */
if ((context_flags & ams::svc::ThreadContextFlag_Fpu) != 0) {
static_assert(util::size(ams::svc::ThreadContext{}.v) == KThreadContext::NumFpuRegisters);
t_ctx->SetFpuRegisters(ctx.v, this->Is64Bit());
auto &caller_save = thread->GetCallerSaveFpuRegisters();
auto &callee_save = t_ctx->GetCalleeSaveFpuRegisters();
if (this->Is64Bit()) {
KThreadContext::SetFpuRegisters(caller_save.fpu64, callee_save.fpu64, ctx.v);
} else {
KThreadContext::SetFpuRegisters(caller_save.fpu32, callee_save.fpu32, ctx.v);
}
}
R_SUCCEED();