This patch adds the tile modifications required for the BZ#12683.
It basically adds the required ucontext_get_pc function
The default syscall_cancel.c should be as expected for TILE. With
GCC 6.1 syscall_cancel.c generates the following code:
* TILEGX
0000000000000000 <__GI___syscall_cancel_arch>:
0: c7bf46ce576bfd9d { move r29, sp ; addi r28, sp, -24 ; st sp, lr }
8: 283bf825401e0db6 { addi sp, sp, -32 ; move r10, r1 }
10: eeedf85b85c18d9b { addi r27, sp, 24 ; move lr, r2 ; st r28, r29 }
18: eef5f88155bbf0c1 { move r1, r3 ; move r2, r4 ; st r27, r30 }
20: 283bf8c25107f143 { move r3, r5 ; move r4, r6 }
28: 283bf8e2d1483000 { move r5, r7 }
0000000000000030 <__syscall_cancel_arch_start>:
30: 9c5e4000340c3000 { ld4s r11, r0 }
38: 18182165d1483000 { andi r11, r11, 4 }
40: 17c00163d1483000 { bnez r11, 78 <__syscall_cancel_arch_end+0x20> }
48: 283bfee051483000 { move r0, lr }
50: 286b180051485000 { swint1 }
0000000000000058 <__syscall_cancel_arch_end>:
58: 180906ced1401ff7 { subx lr, zero, r1 ; addi r29, sp, 32 }
60: 87b8c6ce4dd77040 { cmovnez r0, r1, lr ; addi r28, sp, 24 ; ld lr, r29 }
68: 9ef6400035cc3000 { ld r30, r28 }
70: 286a6ee040120db6 { addi sp, sp, 32 ; jrp lr }
78: 2000000051483000 { jal 78 <__syscall_cancel_arch_end+0x20> }
* TILEGX32
00000000 <__GI___syscall_cancel_arch>:
0: cbbfc6ce576bfd9d { move r29, sp ; addxi r28, sp, -8 ; st sp, lr }
8: 283bf825402f0db6 { addxi sp, sp, -16 ; move r10, r1 }
10: eeedf860d5cbf0b7 { move lr, r2 ; move r1, r3 ; st r28, r29 }
18: 283bf8a1d107f102 { move r2, r4 ; move r3, r5 }
20: 283bf8e2d107f184 { move r4, r6 ; move r5, r7 }
00000028 <__syscall_cancel_arch_start>:
28: 9c5e4000340c3000 { ld4s r11, r0 }
30: 18182165d1483000 { andi r11, r11, 4 }
38: 17c0016351483000 { bnez r11, 68 <__syscall_cancel_arch_end+0x18> }
40: 283bfee051483000 { move r0, lr }
48: 286b180051485000 { swint1 }
00000050 <__syscall_cancel_arch_end>:
50: 28660fe540210d9d { addxi r29, sp, 16 ; subx r10, zero, r1 }
58: 9fbe40004dd4a040 { cmovnez r0, r1, r10 ; ld lr, r29 }
60: 286a6ee040210db6 { addxi sp, sp, 16 ; jrp lr }
68: 2000000051483000 { jal 68 <__syscall_cancel_arch_end+0x18> }
* TILEPRO
00000000 <__GI___syscall_cancel_arch>:
0: bfdfa6ce1b7bfd9d { move r29, sp ; addi r28, sp, -12 ; sw sp, lr }
8: 0833f825403f0db6 { addi sp, sp, -16 ; move r10, r1 }
10: 9f75f85bc9d0cd9b { addi r27, sp, 12 ; move lr, r2 ; sw r28, r29 }
18: 9f6df8811debf0c1 { move r1, r3 ; move r2, r4 ; sw r27, r30 }
20: 0833f8c200cff143 { move r3, r5 ; move r4, r6 }
28: 0833f8e2f0165000 { move r5, r7 }
00000030 <__syscall_cancel_arch_start>:
30: dc05080068ba5000 { lw r11, r0 }
38: 30202165f0165000 { andi r11, r11, 4 }
40: 2800396170165000 { bnz r11, 78 <__syscall_cancel_arch_end+0x20> }
48: 0833fee070165000 { move r0, lr }
50: 400b980070166000 { swint1 }
00000058 <__syscall_cancel_arch_end>:
58: 301886ce81741ff7 { sub lr, zero, r1 ; addi r29, sp, 16 }
60: bc7066ce17777040 { mvnz r0, r1, lr ; addi r28, sp, 12 ; lw lr, r29 }
68: dc75080069ea5000 { lw r30, r28 }
70: 081606e040310db6 { addi sp, sp, 16 ; jrp lr }
78: 6000000070165000 { jal 78 <__syscall_cancel_arch_end+0x20> }
Checked against a build and make check run-built-tests=no for
tile-linux-gnu.
* sysdeps/unix/sysv/linux/tile/sigcontextinfo.h (ucontext_get_pc):
New function.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
ChangeLog | 3 +++
sysdeps/unix/sysv/linux/tile/sigcontextinfo.h | 12 ++++++++++++
2 files changed, 15 insertions(+)