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Code Issues Releases Activity

kern: increase stack parameter size by 0x10

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This commit is contained in:
Michael Scire 2023-02-21 03:15:09 -07:00
parent 3a5f406c5f
commit fd7a93a15f
3 changed files with 9 additions and 4 deletions
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5
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_assembly_offsets.h
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@ -23,7 +23,7 @@
#define THREAD_KERNEL_STACK_TOP 0x280
/* ams::kern::KThread::StackParameters, https://github.com/Atmosphere-NX/Atmosphere/blob/master/libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp */
#define THREAD_STACK_PARAMETERS_SIZE 0x130
#define THREAD_STACK_PARAMETERS_SIZE 0x140
#define THREAD_STACK_PARAMETERS_SVC_PERMISSION 0x00
#define THREAD_STACK_PARAMETERS_CALLER_SAVE_FPU_REGISTERS 0x18
#define THREAD_STACK_PARAMETERS_CUR_THREAD 0x20
@ -34,7 +34,8 @@
#define THREAD_STACK_PARAMETERS_EXCEPTION_FLAGS 0x2D
#define THREAD_STACK_PARAMETERS_IS_PINNED 0x2E
#define THREAD_STACK_PARAMETERS_RESERVED_2F 0x2F
#define THREAD_STACK_PARAMETERS_THREAD_CONTEXT 0x30
#define THREAD_STACK_PARAMETERS_RESERVED_30 0x30
#define THREAD_STACK_PARAMETERS_THREAD_CONTEXT 0x40
#define THREAD_EXCEPTION_FLAG_BIT_INDEX_IS_CALLING_SVC (0)
#define THREAD_EXCEPTION_FLAG_BIT_INDEX_IS_IN_EXCEPTION_HANDLER (1)

4
libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp
View file

@ -108,10 +108,12 @@ namespace ams::kern {
u8 exception_flags;
bool is_pinned;
u8 reserved_2f;
u8 reserved_30[0x10];
KThreadContext context;
};
static_assert(util::IsAligned(AMS_OFFSETOF(StackParameters, context), 0x10));
static_assert(sizeof(StackParameters) == THREAD_STACK_PARAMETERS_SIZE);
static_assert(AMS_OFFSETOF(StackParameters, svc_access_flags) == THREAD_STACK_PARAMETERS_SVC_PERMISSION);
static_assert(AMS_OFFSETOF(StackParameters, caller_save_fpu_registers) == THREAD_STACK_PARAMETERS_CALLER_SAVE_FPU_REGISTERS);
@ -123,8 +125,10 @@ namespace ams::kern {
static_assert(AMS_OFFSETOF(StackParameters, exception_flags) == THREAD_STACK_PARAMETERS_EXCEPTION_FLAGS);
static_assert(AMS_OFFSETOF(StackParameters, is_pinned) == THREAD_STACK_PARAMETERS_IS_PINNED);
static_assert(AMS_OFFSETOF(StackParameters, reserved_2f) == THREAD_STACK_PARAMETERS_RESERVED_2F);
static_assert(AMS_OFFSETOF(StackParameters, reserved_30) == THREAD_STACK_PARAMETERS_RESERVED_30);
static_assert(AMS_OFFSETOF(StackParameters, context) == THREAD_STACK_PARAMETERS_THREAD_CONTEXT);
static_assert(ExceptionFlag_IsCallingSvc == THREAD_EXCEPTION_FLAG_IS_CALLING_SVC);
static_assert(ExceptionFlag_IsInExceptionHandler == THREAD_EXCEPTION_FLAG_IS_IN_EXCEPTION_HANDLER);
static_assert(ExceptionFlag_IsFpuContextRestoreNeeded == THREAD_EXCEPTION_FLAG_IS_FPU_CONTEXT_RESTORE_NEEDED);

4
libraries/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
View file

@ -96,8 +96,8 @@ namespace ams::kern::arch::arm64 {
/* SP */
/* | */
/* v */
/* | u64 argument | u64 entrypoint | KThread::StackParameters (size 0x130) | */
static_assert(sizeof(KThread::StackParameters) == 0x130);
/* | u64 argument | u64 entrypoint | KThread::StackParameters (size 0x140) | */
static_assert(sizeof(KThread::StackParameters) == 0x140);
u64 *stack = GetPointer<u64>(sp);
*(--stack) = GetInteger(pc);