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PIC code on ppc64le uses R2 as a TOC pointer and when calling a function through a function pointer must ensure the function pointer is in R12. These rules are easy enough to follow unconditionally in our assembly, so do that. Change-Id: Icfc4e47ae5dfbe15f581cbdd785cdeed6e40bc32 Reviewed-on: https://go-review.googlesource.com/15526 Reviewed-by: Ian Lance Taylor <iant@golang.org>
24 lines
609 B
ArmAsm
24 lines
609 B
ArmAsm
#include "textflag.h"
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// actually a function descriptor for _main<>(SB)
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TEXT _rt0_ppc64_linux(SB),NOSPLIT,$0
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DWORD $_main<>(SB)
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DWORD $0
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DWORD $0
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TEXT _main<>(SB),NOSPLIT,$-8
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// In a statically linked binary, the stack contains argc,
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// argv as argc string pointers followed by a NULL, envv as a
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// sequence of string pointers followed by a NULL, and auxv.
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// There is no TLS base pointer.
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//
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// TODO(austin): Support ABI v1 dynamic linking entry point
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MOVD 0(R1), R3 // argc
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ADD $8, R1, R4 // argv
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BR main(SB)
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TEXT main(SB),NOSPLIT,$-8
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MOVD $runtime·rt0_go(SB), R12
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MOVD R12, CTR
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BR (CTR)
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