^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) ; SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) ; Port on Texas Instruments TMS320C6x architecture
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) ; Copyright (C) 2004-2011 Texas Instruments Incorporated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) ; Author: Aurelien Jacquiot (aurelien.jacquiot@virtuallogix.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) ; Updated for 2.6.34: Mark Salter <msalter@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/sys.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/thread_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/asm-offsets.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) ; Registers naming
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define DP B14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define SP B15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #ifndef CONFIG_PREEMPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define resume_kernel restore_all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .altmacro
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) .macro MASK_INT reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MVC .S2 CSR,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) CLR .S2 reg,0,0,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MVC .S2 reg,CSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .macro UNMASK_INT reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) MVC .S2 CSR,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) SET .S2 reg,0,0,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) MVC .S2 reg,CSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) .macro GET_THREAD_INFO reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) SHR .S1X SP,THREAD_SHIFT,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) SHL .S1 reg,THREAD_SHIFT,reg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ;; This defines the normal kernel pt_regs layout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .macro SAVE_ALL __rp __tsr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) STW .D2T2 B0,*SP--[2] ; save original B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) MVKL .S2 current_ksp,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MVKH .S2 current_ksp,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) LDW .D2T2 *B0,B1 ; KSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) NOP 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) STW .D2T2 B1,*+SP[1] ; save original B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) XOR .D2 SP,B1,B0 ; (SP ^ KSP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) LDW .D2T2 *+SP[1],B1 ; restore B0/B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) LDW .D2T2 *++SP[2],B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) SHR .S2 B0,THREAD_SHIFT,B0 ; 0 if already using kstack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) [B0] STDW .D2T2 SP:DP,*--B1[1] ; user: save user sp/dp kstack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) [B0] MV .S2 B1,SP ; and switch to kstack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ||[!B0] STDW .D2T2 SP:DP,*--SP[1] ; kernel: save on current stack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) SUBAW .D2 SP,2,SP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ADD .D1X SP,-8,A15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) || STDW .D2T1 A15:A14,*SP--[16] ; save A15:A14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) STDW .D2T2 B13:B12,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) || STDW .D1T1 A13:A12,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) || MVC .S2 __rp,B13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) STDW .D2T2 B11:B10,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) || STDW .D1T1 A11:A10,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) || MVC .S2 CSR,B12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) STDW .D2T2 B9:B8,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) || STDW .D1T1 A9:A8,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) || MVC .S2 RILC,B11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) STDW .D2T2 B7:B6,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) || STDW .D1T1 A7:A6,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) || MVC .S2 ILC,B10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) STDW .D2T2 B5:B4,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) || STDW .D1T1 A5:A4,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) STDW .D2T2 B3:B2,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) || STDW .D1T1 A3:A2,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) || MVC .S2 __tsr,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) STDW .D2T2 B1:B0,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) || STDW .D1T1 A1:A0,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) || MV .S1X B5,A5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) STDW .D2T2 B31:B30,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) || STDW .D1T1 A31:A30,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) STDW .D2T2 B29:B28,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) || STDW .D1T1 A29:A28,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) STDW .D2T2 B27:B26,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) || STDW .D1T1 A27:A26,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) STDW .D2T2 B25:B24,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) || STDW .D1T1 A25:A24,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) STDW .D2T2 B23:B22,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) || STDW .D1T1 A23:A22,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) STDW .D2T2 B21:B20,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) || STDW .D1T1 A21:A20,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) STDW .D2T2 B19:B18,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) || STDW .D1T1 A19:A18,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) STDW .D2T2 B17:B16,*SP--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) || STDW .D1T1 A17:A16,*A15--[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) STDW .D2T2 B13:B12,*SP--[1] ; save PC and CSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) STDW .D2T2 B11:B10,*SP--[1] ; save RILC and ILC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) STDW .D2T1 A5:A4,*SP--[1] ; save TSR and orig A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ;; We left an unused word on the stack just above pt_regs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ;; It is used to save whether or not this frame is due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ;; a syscall. It is cleared here, but the syscall handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ;; sets it to a non-zero value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) MVK .L2 0,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) STW .D2T2 B1,*+SP(REGS__END+8) ; clear syscall flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .macro RESTORE_ALL __rp __tsr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) LDDW .D2T2 *++SP[1],B9:B8 ; get TSR (B9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) LDDW .D2T2 *++SP[1],B11:B10 ; get RILC (B11) and ILC (B10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) LDDW .D2T2 *++SP[1],B13:B12 ; get PC (B13) and CSR (B12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ADDAW .D1X SP,30,A15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) LDDW .D1T1 *++A15[1],A17:A16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) || LDDW .D2T2 *++SP[1],B17:B16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) LDDW .D1T1 *++A15[1],A19:A18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) || LDDW .D2T2 *++SP[1],B19:B18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) LDDW .D1T1 *++A15[1],A21:A20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) || LDDW .D2T2 *++SP[1],B21:B20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) LDDW .D1T1 *++A15[1],A23:A22
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) || LDDW .D2T2 *++SP[1],B23:B22
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) LDDW .D1T1 *++A15[1],A25:A24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) || LDDW .D2T2 *++SP[1],B25:B24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) LDDW .D1T1 *++A15[1],A27:A26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) || LDDW .D2T2 *++SP[1],B27:B26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) LDDW .D1T1 *++A15[1],A29:A28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) || LDDW .D2T2 *++SP[1],B29:B28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) LDDW .D1T1 *++A15[1],A31:A30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) || LDDW .D2T2 *++SP[1],B31:B30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) LDDW .D1T1 *++A15[1],A1:A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) || LDDW .D2T2 *++SP[1],B1:B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) LDDW .D1T1 *++A15[1],A3:A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) || LDDW .D2T2 *++SP[1],B3:B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) || MVC .S2 B9,__tsr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) LDDW .D1T1 *++A15[1],A5:A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) || LDDW .D2T2 *++SP[1],B5:B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) || MVC .S2 B11,RILC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) LDDW .D1T1 *++A15[1],A7:A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) || LDDW .D2T2 *++SP[1],B7:B6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) || MVC .S2 B10,ILC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) LDDW .D1T1 *++A15[1],A9:A8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) || LDDW .D2T2 *++SP[1],B9:B8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) || MVC .S2 B13,__rp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) LDDW .D1T1 *++A15[1],A11:A10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) || LDDW .D2T2 *++SP[1],B11:B10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) || MVC .S2 B12,CSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) LDDW .D1T1 *++A15[1],A13:A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) || LDDW .D2T2 *++SP[1],B13:B12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) MV .D2X A15,SP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) || MVKL .S1 current_ksp,A15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) MVKH .S1 current_ksp,A15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) || ADDAW .D1X SP,6,A14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) STW .D1T1 A14,*A15 ; save kernel stack pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) LDDW .D2T1 *++SP[1],A15:A14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) B .S2 __rp ; return from interruption
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) LDDW .D2T2 *+SP[1],SP:DP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) NOP 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .section .text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ;; Jump to schedule() then return to ret_from_exception
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) _reschedule:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) MVKL .S1 schedule,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) MVKH .S1 schedule,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) B .S1 schedule
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) ADDKPC .S2 ret_from_exception,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ;; Called before syscall handler when process is being debugged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) tracesys_on:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) MVKL .S1 syscall_trace_entry,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) MVKH .S1 syscall_trace_entry,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) B .S1 syscall_trace_entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ADDKPC .S2 ret_from_syscall_trace,B3,3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ADD .S1X 8,SP,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) ret_from_syscall_trace:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ;; tracing returns (possibly new) syscall number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) MV .D2X A4,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) || MVK .S2 __NR_syscalls,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) CMPLTU .L2 B0,B1,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) [!B1] BNOP .S2 ret_from_syscall_function,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) || MVK .S1 -ENOSYS,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ;; reload syscall args from (possibly modified) stack frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ;; and get syscall handler addr from sys_call_table:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) LDW .D2T2 *+SP(REGS_B4+8),B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) || MVKL .S2 sys_call_table,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) LDW .D2T1 *+SP(REGS_A6+8),A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) || MVKH .S2 sys_call_table,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) LDW .D2T2 *+B1[B0],B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) || MVKL .S2 ret_from_syscall_function,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) LDW .D2T2 *+SP(REGS_B6+8),B6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) || MVKH .S2 ret_from_syscall_function,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) LDW .D2T1 *+SP(REGS_A8+8),A8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) LDW .D2T2 *+SP(REGS_B8+8),B8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) NOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ; B0 = sys_call_table[__NR_*]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) BNOP .S2 B0,5 ; branch to syscall handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) || LDW .D2T1 *+SP(REGS_ORIG_A4+8),A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) syscall_exit_work:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) AND .D1 _TIF_SYSCALL_TRACE,A2,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) [!A0] BNOP .S1 work_pending,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) [A0] B .S2 syscall_trace_exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) ADDKPC .S2 resume_userspace,B3,1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) MVC .S2 CSR,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) SET .S2 B1,0,0,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) MVC .S2 B1,CSR ; enable ints
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) work_pending:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) AND .D1 _TIF_NEED_RESCHED,A2,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) [!A0] BNOP .S1 work_notifysig,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) work_resched:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) MVKL .S1 schedule,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) MVKH .S1 schedule,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) B .S2X A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) B .S2 schedule
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ADDKPC .S2 work_rescheduled,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) work_rescheduled:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) ;; make sure we don't miss an interrupt setting need_resched or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) ;; sigpending between sampling and the rti
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) MASK_INT B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) GET_THREAD_INFO A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) MVK .S1 _TIF_WORK_MASK,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) MVK .S1 _TIF_NEED_RESCHED,A3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) NOP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) AND .D1 A1,A2,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) || AND .S1 A3,A2,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) [!A0] BNOP .S1 restore_all,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) [A1] BNOP .S1 work_resched,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) work_notifysig:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) ;; enable interrupts for do_notify_resume()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) UNMASK_INT B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) B .S2 do_notify_resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) LDW .D2T1 *+SP(REGS__END+8),A6 ; syscall flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ADDKPC .S2 resume_userspace,B3,1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) ADD .S1X 8,SP,A4 ; pt_regs pointer is first arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) MV .D2X A2,B4 ; thread_info flags is second arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ;; On C64x+, the return way from exception and interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) ;; is a little bit different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) ENTRY(ret_from_exception)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) #ifdef CONFIG_PREEMPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) MASK_INT B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ENTRY(ret_from_interrupt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ;; Check if we are comming from user mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) LDW .D2T2 *+SP(REGS_TSR+8),B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) MVK .S2 0x40,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) NOP 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) AND .D2 B0,B1,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) [!B0] BNOP .S2 resume_kernel,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) resume_userspace:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) ;; make sure we don't miss an interrupt setting need_resched or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) ;; sigpending between sampling and the rti
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) MASK_INT B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) GET_THREAD_INFO A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) MVK .S1 _TIF_WORK_MASK,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) MVK .S1 _TIF_NEED_RESCHED,A3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) NOP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) AND .D1 A1,A2,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) [A0] BNOP .S1 work_pending,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) BNOP .S1 restore_all,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) ;; System call handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) ;; B0 = syscall number (in sys_call_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) ;; A4,B4,A6,B6,A8,B8 = arguments of the syscall function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) ;; A4 is the return value register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) system_call_saved:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) MVK .L2 1,B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) STW .D2T2 B2,*+SP(REGS__END+8) ; set syscall flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) MVC .S2 B2,ECR ; ack the software exception
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) UNMASK_INT B2 ; re-enable global IT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) system_call_saved_noack:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ;; Check system call number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) MVK .S2 __NR_syscalls,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) || MVKL .S1 sys_ni_syscall,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) CMPLTU .L2 B0,B1,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) || MVKH .S1 sys_ni_syscall,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ;; Check for ptrace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) GET_THREAD_INFO A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) [!B1] B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) [!B1] B .S2 sys_ni_syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) [!B1] ADDKPC .S2 ret_from_syscall_function,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) ;; Get syscall handler addr from sys_call_table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) ;; call tracesys_on or call syscall handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) || MVKL .S2 sys_call_table,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) MVKH .S2 sys_call_table,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) LDW .D2T2 *+B1[B0],B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) NOP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) ; A2 = thread_info flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) AND .D1 _TIF_SYSCALL_TRACE,A2,A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) [A2] BNOP .S1 tracesys_on,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ;; B0 = _sys_call_table[__NR_*]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) B .S2 B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) ADDKPC .S2 ret_from_syscall_function,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) ret_from_syscall_function:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) STW .D2T1 A4,*+SP(REGS_A4+8) ; save return value in A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) ; original A4 is in orig_A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) syscall_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ;; make sure we don't miss an interrupt setting need_resched or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ;; sigpending between sampling and the rti
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) MASK_INT B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) MVK .S1 _TIF_ALLWORK_MASK,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) NOP 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) AND .D1 A1,A2,A2 ; check for work to do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) [A2] BNOP .S1 syscall_exit_work,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) restore_all:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) RESTORE_ALL NRP,NTSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) ;; After a fork we jump here directly from resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) ;; so that A4 contains the previous task structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) ENTRY(ret_from_fork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) MVKL .S1 schedule_tail,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) MVKH .S1 schedule_tail,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) B .S2 schedule_tail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ADDKPC .S2 ret_from_fork_2,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) ret_from_fork_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) ;; return 0 in A4 for child process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) GET_THREAD_INFO A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) BNOP .S2 syscall_exit,3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) MVK .L2 0,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) STW .D2T2 B0,*+SP(REGS_A4+8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ENDPROC(ret_from_fork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) ENTRY(ret_from_kernel_thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) MVKL .S1 schedule_tail,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) MVKH .S1 schedule_tail,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) B .S2 schedule_tail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) LDW .D2T2 *+SP(REGS_A0+8),B10 /* get fn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) ADDKPC .S2 0f,B3,3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) B .S2 B10 /* call fn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) LDW .D2T1 *+SP(REGS_A1+8),A4 /* get arg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ADDKPC .S2 ret_from_fork_2,B3,3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) ENDPROC(ret_from_kernel_thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ;; These are the interrupt handlers, responsible for calling c6x_do_IRQ()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) .macro SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) SAVE_ALL IRP,ITSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) .macro CALL_INT int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) MVKL .S1 c6x_do_IRQ,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) MVKH .S1 c6x_do_IRQ,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) BNOP .S2X A0,1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) MVK .S1 int,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) ADDAW .D2 SP,2,B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) MVKL .S2 ret_from_interrupt,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) MVKH .S2 ret_from_interrupt,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) CALLP .S2 c6x_do_IRQ,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) || MVK .S1 int,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) || ADDAW .D2 SP,2,B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) B .S1 ret_from_interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) ENTRY(_int4_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) CALL_INT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) ENDPROC(_int4_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ENTRY(_int5_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) CALL_INT 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ENDPROC(_int5_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) ENTRY(_int6_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) CALL_INT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ENDPROC(_int6_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) ENTRY(_int7_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) CALL_INT 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) ENDPROC(_int7_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) ENTRY(_int8_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) CALL_INT 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) ENDPROC(_int8_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) ENTRY(_int9_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) CALL_INT 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) ENDPROC(_int9_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) ENTRY(_int10_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) CALL_INT 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) ENDPROC(_int10_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) ENTRY(_int11_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) CALL_INT 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ENDPROC(_int11_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) ENTRY(_int12_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) CALL_INT 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) ENDPROC(_int12_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) ENTRY(_int13_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) CALL_INT 13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ENDPROC(_int13_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) ENTRY(_int14_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) CALL_INT 14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) ENDPROC(_int14_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) ENTRY(_int15_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) SAVE_ALL_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) CALL_INT 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) ENDPROC(_int15_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) ;; Handler for uninitialized and spurious interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) ENTRY(_bad_interrupt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) B .S2 IRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ENDPROC(_bad_interrupt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) ;; Entry for NMI/exceptions/syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) ENTRY(_nmi_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) SAVE_ALL NRP,NTSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) MVC .S2 EFR,B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) CMPEQ .L2 1,B2,B2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) || MVC .S2 TSR,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) CLR .S2 B1,10,10,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) MVC .S2 B1,TSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) [!B2] MVKL .S1 process_exception,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) [!B2] MVKH .S1 process_exception,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) [!B2] B .S2X A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) [!B2] B .S2 process_exception
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) [B2] B .S2 system_call_saved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) [!B2] ADDAW .D2 SP,2,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) [!B2] MV .D1X B1,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) ADDKPC .S2 ret_from_trap,B3,2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) ret_from_trap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) MV .D2X A4,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) [!B0] BNOP .S2 ret_from_exception,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) MVKL .S2 system_call_saved_noack,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) MVKH .S2 system_call_saved_noack,B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) LDW .D2T2 *+SP(REGS_B0+8),B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) LDW .D2T1 *+SP(REGS_A4+8),A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) LDW .D2T2 *+SP(REGS_B4+8),B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) LDW .D2T1 *+SP(REGS_A6+8),A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) LDW .D2T2 *+SP(REGS_B6+8),B6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) LDW .D2T1 *+SP(REGS_A8+8),A8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) || B .S2 B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) || B .S2 system_call_saved_noack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) LDW .D2T2 *+SP(REGS_B8+8),B8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) NOP 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) ENDPROC(_nmi_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) ;; Jump to schedule() then return to ret_from_isr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) #ifdef CONFIG_PREEMPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) resume_kernel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) GET_THREAD_INFO A12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) LDW .D1T1 *+A12(THREAD_INFO_PREEMPT_COUNT),A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) NOP 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) [A1] BNOP .S2 restore_all,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) preempt_schedule:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) GET_THREAD_INFO A2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) LDW .D1T1 *+A2(THREAD_INFO_FLAGS),A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) MVKL .S2 preempt_schedule_irq,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) MVKH .S2 preempt_schedule_irq,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) NOP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) NOP 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) AND .D1 _TIF_NEED_RESCHED,A1,A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) [!A1] BNOP .S2 restore_all,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) B .S2 B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) B .S2 preempt_schedule_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ADDKPC .S2 preempt_schedule,B3,4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) #endif /* CONFIG_PREEMPTION */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) ENTRY(enable_exception)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) DINT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) MVC .S2 TSR,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) MVC .S2 B3,NRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) MVK .L2 0xc,B1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) OR .D2 B0,B1,B0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) MVC .S2 B0,TSR ; Set GEE and XEN in TSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) B .S2 NRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) ENDPROC(enable_exception)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ;; Special system calls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) ;; return address is in B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) ENTRY(sys_rt_sigreturn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ADD .D1X SP,8,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) || MVKL .S1 do_rt_sigreturn,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) MVKH .S1 do_rt_sigreturn,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) BNOP .S2X A0,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) || B .S2 do_rt_sigreturn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ENDPROC(sys_rt_sigreturn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) ENTRY(sys_pread_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) MV .D2X A8,B7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) || MVKL .S1 sys_pread64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) MVKH .S1 sys_pread64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) BNOP .S2X A0,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) || B .S2 sys_pread64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ENDPROC(sys_pread_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) ENTRY(sys_pwrite_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) MV .D2X A8,B7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) || MVKL .S1 sys_pwrite64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) MVKH .S1 sys_pwrite64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) BNOP .S2X A0,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) || B .S2 sys_pwrite64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) ENDPROC(sys_pwrite_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) ;; On Entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) ;; A4 - path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) ;; B4 - offset_lo (LE), offset_hi (BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ;; A6 - offset_lo (BE), offset_hi (LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) ENTRY(sys_truncate64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) #ifdef CONFIG_CPU_BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) MV .S2 B4,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) MV .D2X A6,B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) MV .D2X A6,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) || MVKL .S1 sys_truncate64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) MVKH .S1 sys_truncate64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) BNOP .S2X A0,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) || B .S2 sys_truncate64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) ENDPROC(sys_truncate64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) ;; On Entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) ;; A4 - fd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) ;; B4 - offset_lo (LE), offset_hi (BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) ;; A6 - offset_lo (BE), offset_hi (LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) ENTRY(sys_ftruncate64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) #ifdef CONFIG_CPU_BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) MV .S2 B4,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) MV .D2X A6,B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) MV .D2X A6,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) || MVKL .S1 sys_ftruncate64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) MVKH .S1 sys_ftruncate64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) BNOP .S2X A0,5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) || B .S2 sys_ftruncate64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) NOP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) ENDPROC(sys_ftruncate64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) ;; On Entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) ;; A4 - fd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) ;; B4 - offset_lo (LE), offset_hi (BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) ;; A6 - offset_lo (BE), offset_hi (LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) ;; B6 - len_lo (LE), len_hi (BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) ;; A8 - len_lo (BE), len_hi (LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ;; B8 - advice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ENTRY(sys_fadvise64_64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) MVKL .S1 sys_fadvise64_64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) MVKH .S1 sys_fadvise64_64,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) BNOP .S2X A0,2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) B .S2 sys_fadvise64_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) NOP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) #ifdef CONFIG_CPU_BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) MV .L2 B4,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) || MV .D2X A6,B4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) MV .L1 A8,A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) || MV .D1X B6,A7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) MV .D2X A6,B5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) MV .L1 A8,A7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) || MV .D1X B6,A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) MV .L2 B8,B6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) ENDPROC(sys_fadvise64_64_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) ;; On Entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) ;; A4 - fd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) ;; B4 - mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) ;; A6 - offset_hi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) ;; B6 - offset_lo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) ;; A8 - len_hi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) ;; B8 - len_lo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) ENTRY(sys_fallocate_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) #ifdef CONFIG_C6X_BIG_KERNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) MVKL .S1 sys_fallocate,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) MVKH .S1 sys_fallocate,A0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) BNOP .S2X A0,1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) B .S2 sys_fallocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) NOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) MV .D1 A6,A7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) MV .D1X B6,A6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) MV .D2X A8,B7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) MV .D2 B8,B6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) ENDPROC(sys_fallocate_c6x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ;; put this in .neardata for faster access when using DSBT mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) .section .neardata,"aw",@progbits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) .global current_ksp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) .hidden current_ksp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) current_ksp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) .word init_thread_union + THREAD_START_SP
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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