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