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[AArch64] Save and restore q0-q7 on entry to dynamic linker.

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[BZ #15128] Ensure all argument passing registers are saved and
restored on entry to dynamic linker.
This commit is contained in:
Marcus Shawcroft 2013-12-18 10:00:07 +00:00
parent 5953eb3ad7
commit 9dbebe1a67
3 changed files with 41 additions and 15 deletions
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22
NEWS
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@ -12,17 +12,17 @@ Version 2.19
156, 387, 431, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 7003, 9954,
10253, 10278, 11087, 11157, 11214, 12100, 12486, 13028, 13982, 13985,
14029, 14032, 14120, 14143, 14155, 14547, 14699, 14752, 14876, 14910,
15004, 15048, 15089, 15218, 15268, 15277, 15308, 15362, 15374, 15400,
15425, 15427, 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609,
15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735,
15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825,
15843, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867, 15886,
15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15985,
15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16055, 16071,
16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144, 16146, 16150,
16151, 16153, 16167, 16172, 16195, 16214, 16245, 16271, 16274, 16283,
16289, 16314, 16316, 16330, 16338.
15004, 15048, 15089, 15128, 15218, 15268, 15277, 15308, 15362, 15374,
15400, 15425, 15427, 15483, 15522, 15531, 15532, 15593, 15601, 15608,
15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723, 15734,
15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797, 15799,
15825, 15843, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867,
15886, 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909,
15915, 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966,
15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16055,
16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144, 16146,
16150, 16151, 16153, 16167, 16172, 16195, 16214, 16245, 16271, 16274,
16283, 16289, 16314, 16316, 16330, 16338.
* The public headers no longer use __unused nor __block. This change is to
support compiling programs that are derived from BSD sources and use

6
ports/ChangeLog.aarch64
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@ -1,3 +1,9 @@
2013-12-18 Marcus Shawcroft <marcus.shawcroft@linaro.org>
[BZ #15128]
* sysdeps/aarch64/dl-trampoline.S (_dl_runtime_resolve): Save and
restore q0-q7.
2013-12-17 Marcus Shawcroft <marcus.shawcroft@linaro.org>
* sysdeps/unix/sysv/linux/aarch64/nptl/lowlevellock.h

28
ports/sysdeps/aarch64/dl-trampoline.S
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@ -41,7 +41,7 @@ _dl_runtime_resolve:
cfi_rel_offset (lr, 8)
/* Save arguments. */
stp x8, x9, [sp, #-80]!
stp x8, x9, [sp, #-(80+8*16)]!
cfi_adjust_cfa_offset (80)
cfi_rel_offset (x8, 0)
cfi_rel_offset (x9, 8)
@ -62,11 +62,27 @@ _dl_runtime_resolve:
cfi_rel_offset (x0, 64)
cfi_rel_offset (x1, 72)
stp q0, q1, [sp, #(80+0*16)]
cfi_rel_offset (q0, 80+0*16)
cfi_rel_offset (q1, 80+1*16)
stp q2, q3, [sp, #(80+2*16)]
cfi_rel_offset (q0, 80+2*16)
cfi_rel_offset (q1, 80+3*16)
stp q4, q5, [sp, #(80+4*16)]
cfi_rel_offset (q0, 80+4*16)
cfi_rel_offset (q1, 80+5*16)
stp q6, q7, [sp, #(80+6*16)]
cfi_rel_offset (q0, 80+6*16)
cfi_rel_offset (q1, 80+7*16)
/* Get pointer to linker struct. */
ldr x0, [ip0, #-8]
/* Prepare to call _dl_fixup(). */
ldr x1, [sp, 80] /* Recover &PLTGOT[n] */
ldr x1, [sp, 80+8*16] /* Recover &PLTGOT[n] */
sub x1, x1, ip0
add x1, x1, x1, lsl #1
@ -81,12 +97,16 @@ _dl_runtime_resolve:
mov ip0, x0
/* Get arguments and return address back. */
ldp q0, q1, [sp, #(80+0*16)]
ldp q2, q3, [sp, #(80+2*16)]
ldp q4, q5, [sp, #(80+4*16)]
ldp q6, q7, [sp, #(80+6*16)]
ldp x0, x1, [sp, #64]
ldp x2, x3, [sp, #48]
ldp x4, x5, [sp, #32]
ldp x6, x7, [sp, #16]
ldp x8, x9, [sp], #80
cfi_adjust_cfa_offset (-80)
ldp x8, x9, [sp], #(80+8*16)
cfi_adjust_cfa_offset (-(80+8*16))
ldp ip1, lr, [sp], #16
cfi_adjust_cfa_offset (-16)