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FBReactKit: use indirect jumps to external functions

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Reviewed By: as106

Differential Revision: D3105839

fb-gh-sync-id: 24a8a215f65908b577891fb4b38366bad35cf6fc
fbshipit-source-id: 24a8a215f65908b577891fb4b38366bad35cf6fc
This commit is contained in:
Jason Prado 2016-03-29 20:18:03 -07:00 committed by Facebook Github Bot 4
parent 2115664456
commit 2bcf4bef2b
1 changed files with 15 additions and 2 deletions
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17
React/Profiler/RCTProfileTrampoline-arm.S
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@ -35,7 +35,10 @@ SYMBOL_NAME(RCTProfileTrampoline):
* profile
*/
mov r0, #0xc
bl SYMBOL_NAME(malloc)
ldr ip, LCPI_malloc
blx ip
/**
* r4 is the callee saved register we'll use to refer to the allocated memory,
* store its initial value, so we can restore it later
@ -87,10 +90,20 @@ SYMBOL_NAME(RCTProfileTrampoline):
ldr r1, [r4, #0x8]
ldr r4, [r4]
push {r1} // save the caller on the stack
bl SYMBOL_NAME(free)
ldr ip, LCPI_free
blx ip
pop {lr} // pop the caller
pop {r0} // pop the return value
bx lr // jump to the calleer
trap
.p2align 2
LCPI_malloc:
.long SYMBOL_NAME(malloc)
LCPI_free:
.long SYMBOL_NAME(free)
#endif