| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Mosberger-Tang | 73 | 38.22% | 7 | 38.89% |
| Linus Torvalds (pre-git) | 40 | 20.94% | 1 | 5.56% |
| Hidetoshi Seto | 25 | 13.09% | 1 | 5.56% |
| Keith Owens | 21 | 10.99% | 1 | 5.56% |
| Tony Luck | 16 | 8.38% | 2 | 11.11% |
| Isaku Yamahata | 9 | 4.71% | 1 | 5.56% |
| Linus Torvalds | 2 | 1.05% | 1 | 5.56% |
| Denys Vlasenko | 2 | 1.05% | 1 | 5.56% |
| Luis R. Rodriguez | 1 | 0.52% | 1 | 5.56% |
| Greg Kroah-Hartman | 1 | 0.52% | 1 | 5.56% |
| Frédéric Weisbecker | 1 | 0.52% | 1 | 5.56% |
| Total | 191 | 18 |
/* SPDX-License-Identifier: GPL-2.0 */ #include <asm/cache.h> #include "entry.h" #include <asm/native/inst.h> #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE /* read ar.itc in advance, and use it before leaving bank 0 */ #define ACCOUNT_GET_STAMP \ (pUStk) mov.m r20=ar.itc; #define ACCOUNT_SYS_ENTER \ (pUStk) br.call.spnt rp=account_sys_enter \ ;; #else #define ACCOUNT_GET_STAMP #define ACCOUNT_SYS_ENTER #endif .section ".data..patch.rse", "a" .previous /* * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves * the minimum state necessary that allows us to turn psr.ic back * on. * * Assumed state upon entry: * psr.ic: off * r31: contains saved predicates (pr) * * Upon exit, the state is as follows: * psr.ic: off * r2 = points to &pt_regs.r16 * r8 = contents of ar.ccv * r9 = contents of ar.csd * r10 = contents of ar.ssd * r11 = FPSR_DEFAULT * r12 = kernel sp (kernel virtual address) * r13 = points to current task_struct (kernel virtual address) * p15 = TRUE if psr.i is set in cr.ipsr * predicate registers (other than p2, p3, and p15), b6, r3, r14, r15: * preserved * * Note that psr.ic is NOT turned on by this macro. This is so that * we can pass interruption state as arguments to a handler. */ #define IA64_NATIVE_DO_SAVE_MIN(__COVER,SAVE_IFS,EXTRA,WORKAROUND) \ mov r16=IA64_KR(CURRENT); /* M */ \ mov r27=ar.rsc; /* M */ \ mov r20=r1; /* A */ \ mov r25=ar.unat; /* M */ \ MOV_FROM_IPSR(p0,r29); /* M */ \ mov r26=ar.pfs; /* I */ \ MOV_FROM_IIP(r28); /* M */ \ mov r21=ar.fpsr; /* M */ \ __COVER; /* B;; (or nothing) */ \ ;; \ adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16; \ ;; \ ld1 r17=[r16]; /* load current->thread.on_ustack flag */ \ st1 [r16]=r0; /* clear current->thread.on_ustack flag */ \ adds r1=-IA64_TASK_THREAD_ON_USTACK_OFFSET,r16 \ /* switch from user to kernel RBS: */ \ ;; \ invala; /* M */ \ SAVE_IFS; \ cmp.eq pKStk,pUStk=r0,r17; /* are we in kernel mode already? */ \ ;; \ (pUStk) mov ar.rsc=0; /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */ \ ;; \ (pUStk) mov.m r24=ar.rnat; \ (pUStk) addl r22=IA64_RBS_OFFSET,r1; /* compute base of RBS */ \ (pKStk) mov r1=sp; /* get sp */ \ ;; \ (pUStk) lfetch.fault.excl.nt1 [r22]; \ (pUStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r1; /* compute base of memory stack */ \ (pUStk) mov r23=ar.bspstore; /* save ar.bspstore */ \ ;; \ (pUStk) mov ar.bspstore=r22; /* switch to kernel RBS */ \ (pKStk) addl r1=-IA64_PT_REGS_SIZE,r1; /* if in kernel mode, use sp (r12) */ \ ;; \ (pUStk) mov r18=ar.bsp; \ (pUStk) mov ar.rsc=0x3; /* set eager mode, pl 0, little-endian, loadrs=0 */ \ adds r17=2*L1_CACHE_BYTES,r1; /* really: biggest cache-line size */ \ adds r16=PT(CR_IPSR),r1; \ ;; \ lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES; \ st8 [r16]=r29; /* save cr.ipsr */ \ ;; \ lfetch.fault.excl.nt1 [r17]; \ tbit.nz p15,p0=r29,IA64_PSR_I_BIT; \ mov r29=b0 \ ;; \ WORKAROUND; \ adds r16=PT(R8),r1; /* initialize first base pointer */ \ adds r17=PT(R9),r1; /* initialize second base pointer */ \ (pKStk) mov r18=r0; /* make sure r18 isn't NaT */ \ ;; \ .mem.offset 0,0; st8.spill [r16]=r8,16; \ .mem.offset 8,0; st8.spill [r17]=r9,16; \ ;; \ .mem.offset 0,0; st8.spill [r16]=r10,24; \ .mem.offset 8,0; st8.spill [r17]=r11,24; \ ;; \ st8 [r16]=r28,16; /* save cr.iip */ \ st8 [r17]=r30,16; /* save cr.ifs */ \ (pUStk) sub r18=r18,r22; /* r18=RSE.ndirty*8 */ \ mov r8=ar.ccv; \ mov r9=ar.csd; \ mov r10=ar.ssd; \ movl r11=FPSR_DEFAULT; /* L-unit */ \ ;; \ st8 [r16]=r25,16; /* save ar.unat */ \ st8 [r17]=r26,16; /* save ar.pfs */ \ shl r18=r18,16; /* compute ar.rsc to be used for "loadrs" */ \ ;; \ st8 [r16]=r27,16; /* save ar.rsc */ \ (pUStk) st8 [r17]=r24,16; /* save ar.rnat */ \ (pKStk) adds r17=16,r17; /* skip over ar_rnat field */ \ ;; /* avoid RAW on r16 & r17 */ \ (pUStk) st8 [r16]=r23,16; /* save ar.bspstore */ \ st8 [r17]=r31,16; /* save predicates */ \ (pKStk) adds r16=16,r16; /* skip over ar_bspstore field */ \ ;; \ st8 [r16]=r29,16; /* save b0 */ \ st8 [r17]=r18,16; /* save ar.rsc value for "loadrs" */ \ cmp.eq pNonSys,pSys=r0,r0 /* initialize pSys=0, pNonSys=1 */ \ ;; \ .mem.offset 0,0; st8.spill [r16]=r20,16; /* save original r1 */ \ .mem.offset 8,0; st8.spill [r17]=r12,16; \ adds r12=-16,r1; /* switch to kernel memory stack (with 16 bytes of scratch) */ \ ;; \ .mem.offset 0,0; st8.spill [r16]=r13,16; \ .mem.offset 8,0; st8.spill [r17]=r21,16; /* save ar.fpsr */ \ mov r13=IA64_KR(CURRENT); /* establish `current' */ \ ;; \ .mem.offset 0,0; st8.spill [r16]=r15,16; \ .mem.offset 8,0; st8.spill [r17]=r14,16; \ ;; \ .mem.offset 0,0; st8.spill [r16]=r2,16; \ .mem.offset 8,0; st8.spill [r17]=r3,16; \ ACCOUNT_GET_STAMP \ adds r2=IA64_PT_REGS_R16_OFFSET,r1; \ ;; \ EXTRA; \ movl r1=__gp; /* establish kernel global pointer */ \ ;; \ ACCOUNT_SYS_ENTER \ bsw.1; /* switch back to bank 1 (must be last in insn group) */ \ ;; /* * SAVE_REST saves the remainder of pt_regs (with psr.ic on). * * Assumed state upon entry: * psr.ic: on * r2: points to &pt_regs.r16 * r3: points to &pt_regs.r17 * r8: contents of ar.ccv * r9: contents of ar.csd * r10: contents of ar.ssd * r11: FPSR_DEFAULT * * Registers r14 and r15 are guaranteed not to be touched by SAVE_REST. */ #define SAVE_REST \ .mem.offset 0,0; st8.spill [r2]=r16,16; \ .mem.offset 8,0; st8.spill [r3]=r17,16; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r18,16; \ .mem.offset 8,0; st8.spill [r3]=r19,16; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r20,16; \ .mem.offset 8,0; st8.spill [r3]=r21,16; \ mov r18=b6; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r22,16; \ .mem.offset 8,0; st8.spill [r3]=r23,16; \ mov r19=b7; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r24,16; \ .mem.offset 8,0; st8.spill [r3]=r25,16; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r26,16; \ .mem.offset 8,0; st8.spill [r3]=r27,16; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r28,16; \ .mem.offset 8,0; st8.spill [r3]=r29,16; \ ;; \ .mem.offset 0,0; st8.spill [r2]=r30,16; \ .mem.offset 8,0; st8.spill [r3]=r31,32; \ ;; \ mov ar.fpsr=r11; /* M-unit */ \ st8 [r2]=r8,8; /* ar.ccv */ \ adds r24=PT(B6)-PT(F7),r3; \ ;; \ stf.spill [r2]=f6,32; \ stf.spill [r3]=f7,32; \ ;; \ stf.spill [r2]=f8,32; \ stf.spill [r3]=f9,32; \ ;; \ stf.spill [r2]=f10; \ stf.spill [r3]=f11; \ adds r25=PT(B7)-PT(F11),r3; \ ;; \ st8 [r24]=r18,16; /* b6 */ \ st8 [r25]=r19,16; /* b7 */ \ ;; \ st8 [r24]=r9; /* ar.csd */ \ st8 [r25]=r10; /* ar.ssd */ \ ;; #define RSE_WORKAROUND \ (pUStk) extr.u r17=r18,3,6; \ (pUStk) sub r16=r18,r22; \ [1:](pKStk) br.cond.sptk.many 1f; \ .xdata4 ".data..patch.rse",1b-. \ ;; \ cmp.ge p6,p7 = 33,r17; \ ;; \ (p6) mov r17=0x310; \ (p7) mov r17=0x308; \ ;; \ cmp.leu p1,p0=r16,r17; \ (p1) br.cond.sptk.many 1f; \ dep.z r17=r26,0,62; \ movl r16=2f; \ ;; \ mov ar.pfs=r17; \ dep r27=r0,r27,16,14; \ mov b0=r16; \ ;; \ br.ret.sptk b0; \ ;; \ 2: \ mov ar.rsc=r0 \ ;; \ flushrs; \ ;; \ mov ar.bspstore=r22 \ ;; \ mov r18=ar.bsp; \ ;; \ 1: \ .pred.rel "mutex", pKStk, pUStk #define SAVE_MIN_WITH_COVER DO_SAVE_MIN(COVER, mov r30=cr.ifs, , RSE_WORKAROUND) #define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(COVER, mov r30=cr.ifs, mov r15=r19, RSE_WORKAROUND) #define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, , )
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1