mirror of
https://github.com/ITotalJustice/sphaira.git
synced 2025-11-04 07:16:13 +01:00
48 lines
1.1 KiB
ArmAsm
48 lines
1.1 KiB
ArmAsm
.section .text.nroEntrypointTrampoline, "ax", %progbits
|
|
.align 2
|
|
.global nroEntrypointTrampoline
|
|
.type nroEntrypointTrampoline, %function
|
|
.cfi_startproc
|
|
nroEntrypointTrampoline:
|
|
|
|
// Reset stack pointer.
|
|
adrp x8, __stack_top //Defined in libnx.
|
|
ldr x8, [x8, #:lo12:__stack_top]
|
|
mov sp, x8
|
|
|
|
// Call NRO.
|
|
blr x2
|
|
|
|
// Save retval
|
|
adrp x1, g_lastRet
|
|
str w0, [x1, #:lo12:g_lastRet]
|
|
|
|
// Reset stack pointer and load next NRO.
|
|
adrp x8, __stack_top
|
|
ldr x8, [x8, #:lo12:__stack_top]
|
|
mov sp, x8
|
|
|
|
b loadNro
|
|
|
|
.cfi_endproc
|
|
|
|
.section .text.__libnx_exception_entry, "ax", %progbits
|
|
.align 2
|
|
.global __libnx_exception_entry
|
|
.type __libnx_exception_entry, %function
|
|
.cfi_startproc
|
|
__libnx_exception_entry:
|
|
|
|
// Divert execution to the NRO entrypoint (if a NRO is actually loaded).
|
|
adrp x7, g_nroAddr
|
|
ldr x7, [x7, #:lo12:g_nroAddr]
|
|
cbz x7, .Lfail
|
|
br x7
|
|
|
|
.Lfail:
|
|
// Otherwise, pass this unhandled exception right back to the kernel.
|
|
mov w0, #0xf801 // KERNELRESULT(UnhandledUserInterrupt)
|
|
svc 0x28 // svcReturnFromException
|
|
|
|
.cfi_endproc
|