2018-11-20 09:59:10 +00:00
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##
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2018-11-20 10:16:29 +00:00
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## This file is part of the "Coroutine" project and released under the MIT License.
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2018-11-20 09:59:10 +00:00
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##
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## Created by Samuel Williams on 10/5/2018.
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2019-12-28 12:41:47 +13:00
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## Copyright, 2018, by Samuel Williams.
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2018-11-20 09:59:10 +00:00
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##
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2020-07-05 17:27:12 +09:00
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#define TOKEN_PASTE(x,y) x##y
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#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
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2020-04-01 02:15:20 +01:00
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.file "Context.S"
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2018-11-20 09:59:10 +00:00
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.text
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2020-07-05 17:27:12 +09:00
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.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
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2020-04-01 02:15:20 +01:00
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.align 2
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2020-07-05 17:27:12 +09:00
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.type PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer),%function
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2020-04-01 02:15:20 +01:00
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.syntax unified
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2020-07-05 17:27:12 +09:00
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PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
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2019-06-26 22:02:19 +12:00
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# Save caller state (8 registers + return address)
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push {r4-r11,lr}
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2020-07-05 17:12:20 +09:00
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2019-06-26 22:02:19 +12:00
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# Save caller stack pointer
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str sp, [r0]
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2020-07-05 17:12:20 +09:00
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2019-06-26 22:02:19 +12:00
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# Restore callee stack pointer
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ldr sp, [r1]
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2020-07-05 17:12:20 +09:00
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2019-06-26 22:02:19 +12:00
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# Restore callee state (8 registers program counter)
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pop {r4-r11,pc}
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2020-12-08 21:21:28 +13:00
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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