1991/0112/ss/l.s (diff list | history)

1991/0111/sys/src/9/ss/l.s:1,6 – 1991/0112/sys/src/9/ss/l.s:1,6 (short | long | prev | next)
1990/1223		#include "mem.h"
1991/0111		#define SYSPSR (SPL(0x0)|PSRSUPER)
1991/0112		#define SYSPSR (SPL(0x0)|PSREF|PSRSUPER)
1990/1226
1990/1223		TEXT start(SB), $-4
1991/0111/sys/src/9/ss/l.s:28,42 – 1991/0112/sys/src/9/ss/l.s:28,37
1990/1223		UNIMP RETURN
1990/1226		TEXT getpsr(SB), $0                  MOVW PSR, R7
1990/1223		RETURN
1991/0110		TEXT swap1(SB), $0
1991/0109		MOVW keyaddr+0(FP), R8
1991/0110		TAS (R8), R7
1991/0112		TAS (R8), R7 /* LDSTUB, thank you ken */
1991/0109		RETURN
1990/1226		TEXT swap1_should_work(SB), $0
1991/0111/sys/src/9/ss/l.s:110,115 – 1991/0112/sys/src/9/ss/l.s:105,116
1990/1226		MOVW $(UTZERO+32+4), R8 /* nPC */ RETT R7, R8
1991/0112		TEXT rfnote(SB), $0 MOVW 0(FP), R1 /* 1st arg is &uregpointer */ ADD $4, R1 /* point at ureg */ JMP restore
1990/1226		TEXT traplink(SB), $-4 /* R8 to R23 are free to play with */
1991/0111/sys/src/9/ss/l.s:122,134 – 1991/0112/sys/src/9/ss/l.s:123,137
1990/1226		/* * Interrupt or fault from kernel */ MOVW R1, (0-(4*(32+5))+(4*1))(R1) /* save R1=SP */
1991/0112		ANDN $7, R1, R20 /* dbl aligned */ MOVW R1, (0-(4*(32+6))+(4*1))(R20) /* save R1=SP */
1990/1226		/* really clumsy: store these in Ureg so can be restored below */ MOVW R2, (0-(4*(32+5))+(4*2))(R1) /* SB */ MOVW R5, (0-(4*(32+5))+(4*5))(R1) /* USER */ MOVW R6, (0-(4*(32+5))+(4*6))(R1) /* MACH */
1991/0112		MOVW R2, (0-(4*(32+6))+(4*2))(R20) /* SB */ MOVW R5, (0-(4*(32+6))+(4*5))(R20) /* USER */ MOVW R6, (0-(4*(32+6))+(4*6))(R20) /* MACH */ SUB $(4*(32+6)), R20, R1
1990/1226		trap1: SUB $(4*(32+5)), R1 MOVW Y, R20 MOVW R20, (4*(32+0))(R1) /* Y */ MOVW TBR, R20
1991/0111/sys/src/9/ss/l.s:143,172 – 1991/0112/sys/src/9/ss/l.s:146,164
1990/1226		MOVW R7, (4*7)(R1) RESTORE R0, R0 /* now our registers R8-R31 are same as before trap */ MOVW R8, (4*8)(R1) MOVW R9, (4*9)(R1) MOVW R10, (4*10)(R1) MOVW R11, (4*11)(R1) MOVW R12, (4*12)(R1) MOVW R13, (4*13)(R1) MOVW R14, (4*14)(R1) MOVW R15, (4*15)(R1) MOVW R16, (4*16)(R1) MOVW R17, (4*17)(R1) MOVW R18, (4*18)(R1) MOVW R19, (4*19)(R1) MOVW R20, (4*20)(R1) MOVW R21, (4*21)(R1) MOVW R22, (4*22)(R1) MOVW R23, (4*23)(R1) MOVW R24, (4*24)(R1) MOVW R25, (4*25)(R1) MOVW R26, (4*26)(R1) MOVW R27, (4*27)(R1) MOVW R28, (4*28)(R1) MOVW R29, (4*29)(R1) MOVW R30, (4*30)(R1) MOVW R31, (4*31)(R1)
1991/0112		/* save registers two at a time */ MOVD R8, (4*8)(R1) MOVD R10, (4*10)(R1) MOVD R12, (4*12)(R1) MOVD R14, (4*14)(R1) MOVD R16, (4*16)(R1) MOVD R18, (4*18)(R1) MOVD R20, (4*20)(R1) MOVD R22, (4*22)(R1) MOVD R24, (4*24)(R1) MOVD R26, (4*26)(R1) MOVD R28, (4*28)(R1) MOVD R30, (4*30)(R1)
1990/1226		/* SP and SB and u and m are already set; away we go */ MOVW R1, -4(R1) /* pointer to Ureg */ SUB $8, R1
1991/0111/sys/src/9/ss/l.s:178,220 – 1991/0112/sys/src/9/ss/l.s:170,198
1990/1226		JMPL faultsparc(SB) ADD $8, R1 MOVW (4*(32+2))(R1), R7 /* PSR */ MOVW R7, PSR
1991/0112		restore: MOVW (4*(32+2))(R1), R8 /* PSR */ MOVW R8, PSR
1990/1226		OR R0, R0 OR R0, R0 OR R0, R0 MOVW (4*31)(R1), R31 MOVW (4*30)(R1), R30 MOVW (4*29)(R1), R29 MOVW (4*28)(R1), R28 MOVW (4*27)(R1), R27 MOVW (4*26)(R1), R26 MOVW (4*25)(R1), R25 MOVW (4*24)(R1), R24 MOVW (4*23)(R1), R23 MOVW (4*22)(R1), R22 MOVW (4*21)(R1), R21 MOVW (4*20)(R1), R20 MOVW (4*19)(R1), R19 MOVW (4*18)(R1), R18 MOVW (4*17)(R1), R17 MOVW (4*16)(R1), R16 MOVW (4*15)(R1), R15 MOVW (4*14)(R1), R14 MOVW (4*13)(R1), R13 MOVW (4*12)(R1), R12 MOVW (4*11)(R1), R11 MOVW (4*10)(R1), R10 MOVW (4*9)(R1), R9 MOVW (4*8)(R1), R8
1991/0112		MOVD (4*30)(R1), R30 MOVD (4*28)(R1), R28 MOVD (4*26)(R1), R26 MOVD (4*24)(R1), R24 MOVD (4*22)(R1), R22 MOVD (4*20)(R1), R20 MOVD (4*18)(R1), R18 MOVD (4*16)(R1), R16 MOVD (4*14)(R1), R14 MOVD (4*12)(R1), R12 MOVD (4*10)(R1), R10 MOVD (4*8)(R1), R8
1990/1226		SAVE R0, R0 MOVW (4*7)(R1), R7 MOVW (4*6)(R1), R6 MOVW (4*5)(R1), R5 MOVW (4*4)(R1), R4 MOVW (4*3)(R1), R3 MOVW (4*2)(R1), R2
1991/0112		MOVD (4*6)(R1), R6 MOVD (4*4)(R1), R4 MOVD (4*2)(R1), R2
1990/1226		MOVW (4*(32+0))(R1), R20 /* Y */ MOVW R20, Y MOVW (4*(32+4))(R1), R17 /* PC */
1991/0111/sys/src/9/ss/l.s:230,241 – 1991/0112/sys/src/9/ss/l.s:208,220
1990/1226		MOVW R2, R9 MOVW $setSB(SB), R2 MOVW $(USERADDR+BY2PG), R1 MOVW R8, (0-(4*(32+5))+(4*1))(R1) /* save R1=SP */ MOVW R9, (0-(4*(32+5))+(4*2))(R1) /* save R2=SB */ MOVW R5, (0-(4*(32+5))+(4*5))(R1) /* save R5=USER */ MOVW R6, (0-(4*(32+5))+(4*6))(R1) /* save R6=MACH */
1991/0112		MOVW R8, (0-(4*(32+6))+(4*1))(R1) /* save R1=SP */ MOVW R9, (0-(4*(32+6))+(4*2))(R1) /* save R2=SB */ MOVW R5, (0-(4*(32+6))+(4*5))(R1) /* save R5=USER */ MOVW R6, (0-(4*(32+6))+(4*6))(R1) /* save R6=MACH */
1990/1226		MOVW $USERADDR, R(USER) MOVW $mach0(SB), R(MACH)
1991/0112		SUB $(4*(32+6)), R1
1990/1226		JMP trap1 TEXT syslink(SB), $-4
1991/0111/sys/src/9/ss/l.s:248,261 – 1991/0112/sys/src/9/ss/l.s:227,238
1990/1226		MOVW R2, R9 MOVW $setSB(SB), R2 MOVW $(USERADDR+BY2PG), R1 MOVW R8, (0-(4*(32+5))+4)(R1) /* save R1=SP */ SUB $(4*(32+5)), R1
1991/0112		MOVW R8, (0-(4*(32+6))+4)(R1) /* save R1=SP */ SUB $(4*(32+6)), R1
1990/1226		MOVW R9, (4*2)(R1) /* save R2=SB */ MOVW R3, (4*3)(R1) /* global register */ MOVW R4, (4*4)(R1) /* global register */ MOVW R5, (4*5)(R1) /* save R5=USER */ MOVW R6, (4*6)(R1) /* save R6=MACH */ MOVW R7, (4*7)(R1) /* system call number */
1991/0112		MOVD R4, (4*4)(R1) /* global register, R5=USER */ MOVD R6, (4*6)(R1) /* save R6=MACH, R7=syscall# */
1990/1226		MOVW $USERADDR, R(USER) MOVW $mach0(SB), R(MACH) MOVW TBR, R20
1991/0111/sys/src/9/ss/l.s:285,294 – 1991/0112/sys/src/9/ss/l.s:262,269
1990/1226		MOVW (4*15)(R1), R15 SAVE R0, R0 MOVW (4*6)(R1), R6 MOVW (4*5)(R1), R5 MOVW (4*4)(R1), R4 MOVW (4*3)(R1), R3 MOVW (4*2)(R1), R2
1991/0112		MOVD (4*4)(R1), R4 MOVD (4*2)(R1), R2
1990/1226		MOVW (4*(32+4))(R1), R17 /* PC */ MOVW (4*(32+3))(R1), R18 /* nPC */ MOVW (4*1)(R1), R1 /* restore R1=SP */