diff options
| author | Cherry Zhang <cherryyz@google.com> | 2019-10-20 17:25:02 -0400 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2019-11-05 02:49:48 +0000 |
| commit | 2ff746d7dc3ce5ce7034bfcc3af16b7b8eab7413 (patch) | |
| tree | 042cfca423a4f83993f526eb7dd7ce11c29c4da1 /src/runtime/preempt_arm.s | |
| parent | 376c4ceab76591838623086ce387230cab5d0d5d (diff) | |
| download | go-2ff746d7dc3ce5ce7034bfcc3af16b7b8eab7413.tar.xz | |
runtime: add async preemption support on ARM
This CL adds support of call injection and async preemption on
ARM.
Injected call, like sigpanic, has special frame layout. Teach
traceback to handle it.
Change-Id: I887e90134fbf8a676b73c26321c50b3c4762dba4
Reviewed-on: https://go-review.googlesource.com/c/go/+/202338
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Diffstat (limited to 'src/runtime/preempt_arm.s')
| -rw-r--r-- | src/runtime/preempt_arm.s | 79 |
1 files changed, 77 insertions, 2 deletions
diff --git a/src/runtime/preempt_arm.s b/src/runtime/preempt_arm.s index 5697268ce1..8f243c0dcd 100644 --- a/src/runtime/preempt_arm.s +++ b/src/runtime/preempt_arm.s @@ -4,5 +4,80 @@ #include "textflag.h" TEXT ·asyncPreempt(SB),NOSPLIT|NOFRAME,$0-0 - // Not implemented yet - JMP ·abort(SB) + MOVW.W R14, -188(R13) + MOVW R0, 4(R13) + MOVW R1, 8(R13) + MOVW R2, 12(R13) + MOVW R3, 16(R13) + MOVW R4, 20(R13) + MOVW R5, 24(R13) + MOVW R6, 28(R13) + MOVW R7, 32(R13) + MOVW R8, 36(R13) + MOVW R9, 40(R13) + MOVW R11, 44(R13) + MOVW R12, 48(R13) + MOVW CPSR, R0 + MOVW R0, 52(R13) + MOVB ·goarm(SB), R0 + CMP $6, R0 + BLT nofp + MOVW FPCR, R0 + MOVW R0, 56(R13) + MOVD F0, 60(R13) + MOVD F1, 68(R13) + MOVD F2, 76(R13) + MOVD F3, 84(R13) + MOVD F4, 92(R13) + MOVD F5, 100(R13) + MOVD F6, 108(R13) + MOVD F7, 116(R13) + MOVD F8, 124(R13) + MOVD F9, 132(R13) + MOVD F10, 140(R13) + MOVD F11, 148(R13) + MOVD F12, 156(R13) + MOVD F13, 164(R13) + MOVD F14, 172(R13) + MOVD F15, 180(R13) +nofp: + CALL ·asyncPreempt2(SB) + MOVB ·goarm(SB), R0 + CMP $6, R0 + BLT nofp2 + MOVD 180(R13), F15 + MOVD 172(R13), F14 + MOVD 164(R13), F13 + MOVD 156(R13), F12 + MOVD 148(R13), F11 + MOVD 140(R13), F10 + MOVD 132(R13), F9 + MOVD 124(R13), F8 + MOVD 116(R13), F7 + MOVD 108(R13), F6 + MOVD 100(R13), F5 + MOVD 92(R13), F4 + MOVD 84(R13), F3 + MOVD 76(R13), F2 + MOVD 68(R13), F1 + MOVD 60(R13), F0 + MOVW 56(R13), R0 + MOVW R0, FPCR +nofp2: + MOVW 52(R13), R0 + MOVW R0, CPSR + MOVW 48(R13), R12 + MOVW 44(R13), R11 + MOVW 40(R13), R9 + MOVW 36(R13), R8 + MOVW 32(R13), R7 + MOVW 28(R13), R6 + MOVW 24(R13), R5 + MOVW 20(R13), R4 + MOVW 16(R13), R3 + MOVW 12(R13), R2 + MOVW 8(R13), R1 + MOVW 4(R13), R0 + MOVW 188(R13), R14 + MOVW.P 192(R13), R15 + UNDEF |