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259364adb8
The linker relaxation logic will be:
Code sequence I (tiny):
0x00 adr x0, :tlsldm:x
0x04 bl __tls_get_addr
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V
0x00 mrs x0, tpidr_el0
0x04 add x0, x0, TCB_SIZE
Code sequence II (small):
0x00 adrp a0, :tlsldm:x
0x04 add a0, #:tlsldm_lo12:x
0x08 bl __tls_get_addr
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V
0x00 mrs x0, tpidr_el0
0x04 add x0, x0, TCB_SIZE
0x08 nop
2015-09-09 Jiong Wang <jiong.wang@arm.com>
bfd/
* elfnn-aarch64.c (aarch64_tls_transition_without_check): Support
three TLS local dynamic traditional relocations types.
(elfNN_aarch64_tls_relax): Support TLS local dynamic traditional to
local executable relaxation.
ld/testsuite/
* ld-aarch64/tls-relax-ld-le-tiny.s: New testcase.
* ld-aarch64/tls-relax-ld-le-small.s: Likewise.
* ld-aarch64/tls-relax-ld-le-tiny.d: New expectation file.
* ld-aarch64/tls-relax-ld-le-small.d: Likewise.
* ld-aarch64/aarch64-elf.exp: Run new testcases.
14 lines
368 B
Makefile
14 lines
368 B
Makefile
#source: tls-relax-ld-le-small.s
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#ld: -T relocs.ld -e0
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#objdump: -dr
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#...
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+10000: 910003fd mov x29, sp
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+10004: d53bd040 mrs x0, tpidr_el0
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+10008: 91004000 add x0, x0, #0x10
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+1000c: d503201f nop
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+10010: d503201f nop
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+10014: 91400001 add x1, x0, #0x0, lsl #12
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+10018: 91000021 add x1, x1, #0x0
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+1001c: 90000000 adrp x0, 10000 <.*>
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+10020: d65f03c0 ret
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