php-src/Zend/asm/jump_arm_aapcs_macho_gas.S

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/*
Copyright Oliver Kowalke 2009.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
*/
/*******************************************************
* *
* ------------------------------------------------- *
* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
* ------------------------------------------------- *
* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| *
* ------------------------------------------------- *
* | s16 | s17 | s18 | s19 | s20 | s21 | s22 | s23 | *
* ------------------------------------------------- *
* ------------------------------------------------- *
* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
* ------------------------------------------------- *
* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| *
* ------------------------------------------------- *
* | s24 | s25 | s26 | s27 | s28 | s29 | s30 | s31 | *
* ------------------------------------------------- *
* ------------------------------------------------- *
* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
* ------------------------------------------------- *
* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| *
* ------------------------------------------------- *
* | sjlj|hiddn| v1 | v2 | v3 | v4 | v5 | v6 | *
* ------------------------------------------------- *
* ------------------------------------------------- *
* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
* ------------------------------------------------- *
* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| *
* ------------------------------------------------- *
* | v7 | v8 | lr | pc | FCTX| DATA| | *
* ------------------------------------------------- *
* *
*******************************************************/
.text
.globl _jump_fcontext
.align 2
_jump_fcontext:
@ save LR as PC
push {lr}
@ save hidden,V1-V8,LR
push {a1,v1-v8,lr}
@ locate TLS to save/restore SjLj handler
mrc p15, 0, v2, c13, c0, #3
bic v2, v2, #3
@ load TLS[__PTK_LIBC_DYLD_Unwind_SjLj_Key]
ldr v1, [v2, #72]
@ save SjLj handler
push {v1}
@ prepare stack for FPU
sub sp, sp, #64
#if (defined(__VFP_FP__) && !defined(__SOFTFP__))
@ save S16-S31
vstmia sp, {d8-d15}
#endif
@ store RSP (pointing to context-data) in A1
mov a1, sp
@ restore RSP (pointing to context-data) from A2
mov sp, a2
#if (defined(__VFP_FP__) && !defined(__SOFTFP__))
@ restore S16-S31
vldmia sp, {d8-d15}
#endif
@ prepare stack for FPU
add sp, sp, #64
@ r#estore SjLj handler
pop {v1}
@ store SjLj handler in TLS
str v1, [v2, #72]
@ restore hidden,V1-V8,LR
pop {a4,v1-v8,lr}
@ return transfer_t from jump
str a1, [a4, #0]
str a3, [a4, #4]
@ pass transfer_t as first arg in context function
@ A1 == FCTX, A2 == DATA
mov a2, a3
@ restore PC
pop {pc}