1991/1113/ss/l.s (diff list | history)

1991/1106/sys/src/9/ss/l.s:1,6 – 1991/1113/sys/src/9/ss/l.s:1,7 (short | long | prev | next)
1990/1223		#include "mem.h"
1991/0112		#define SYSPSR (SPL(0x0)|PSREF|PSRSUPER)
1991/1113		#define SYSPSR (SPL(0x0)|PSREF|PSRSUPER|0) #define NOOP OR R0, R0; OR R0, R0; OR R0, R0
1990/1226
1990/1223		TEXT start(SB), $-4
1991/1106/sys/src/9/ss/l.s:16,21 – 1991/1113/sys/src/9/ss/l.s:17,23
1990/1226		MOVW $setSB(SB), R2 MOVW $startvirt(SB), R7 JMPL (R7)
1991/1113		MOVW $_mul(SB), R0 /* touch _mul etc.; doesn't need to execute */
1990/1223		RETURN /* can't get here */ TEXT startvirt(SB), $-4
1991/1106/sys/src/9/ss/l.s:47,54 – 1991/1113/sys/src/9/ss/l.s:49,56
1991/01151		FMOVD F24, F22
1990/1223		MOVW $mach0(SB), R(MACH)
1990/1226		MOVW $0x8, R7 MOVW R7, WIM
1991/1113		/* MOVW $0x8, R7 /**/ MOVW R0, WIM
1990/1223		JMPL main(SB)
1991/0115		MOVW (R0), R0
1990/1223		RETURN
1991/1106/sys/src/9/ss/l.s:71,79 – 1991/1113/sys/src/9/ss/l.s:73,79
1990/1226		MOVW R9, R10 AND $~PSRET, R10 /* BUG: book says this is buggy */ MOVW R10, PSR OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1991/1105		MOVW (R7), R7
1990/1226		CMP R7, R0 BNE was1
1991/1106/sys/src/9/ss/l.s:89,97 – 1991/1113/sys/src/9/ss/l.s:89,95
1990/1226		MOVW R7, R10 OR $PSRET, R10 MOVW R10, PSR OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1990/1226		RETURN TEXT splhi(SB), $0
1991/1106/sys/src/9/ss/l.s:101,109 – 1991/1113/sys/src/9/ss/l.s:99,105
1990/1226		MOVW R7, R10 AND $~PSRET, R10 /* BUG: book says this is buggy */ MOVW R10, PSR OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1990/1226		RETURN TEXT splx(SB), $0
1991/1106/sys/src/9/ss/l.s:110,118 – 1991/1113/sys/src/9/ss/l.s:106,112
1990/1226
1991/1006		MOVW R15, 4(R(MACH)) /* save PC in m->splpc */
1990/1226		MOVW R7, PSR /* BUG: book says this is buggy */ OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1991/1006		RETURN TEXT spldone(SB), $0
1991/1106/sys/src/9/ss/l.s:122,130 – 1991/1113/sys/src/9/ss/l.s:116,122
1991/1106		TEXT touser(SB), $0
1991/1105		MOVW $(SYSPSR&~PSREF), R8 MOVW R8, PSR
1990/1226		OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1991/0712
1991/1105		MOVW R7, R1
1990/1226		SAVE R0, R0 /* RETT is implicit RESTORE */
1991/1106/sys/src/9/ss/l.s:143,148 – 1991/1113/sys/src/9/ss/l.s:135,141
1990/1226		/* R8 to R23 are free to play with */ /* R17 contains PC, R18 contains nPC */ /* R19 has PSR loaded from vector code */
1991/1113
1990/1226		ANDCC $PSRPSUPER, R19, R0 BE usertrap
1991/1106/sys/src/9/ss/l.s:191,199 – 1991/1113/sys/src/9/ss/l.s:184,190
1990/1226		SUB $8, R1
1991/1106		MOVW $SYSPSR, R8 MOVW R8, PSR
1990/1226		OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1991/01151		JMPL trap(SB)
1990/1226		ADD $8, R1
1991/1106/sys/src/9/ss/l.s:200,208 – 1991/1113/sys/src/9/ss/l.s:191,197
1991/0112		restore: MOVW (4*(32+2))(R1), R8 /* PSR */ MOVW R8, PSR
1990/1226		OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1990/1226
1991/0112		MOVD (4*30)(R1), R30 MOVD (4*28)(R1), R28
1991/1106/sys/src/9/ss/l.s:250,255 – 1991/1113/sys/src/9/ss/l.s:239,245
1990/1226		/* R17 contains PC, R18 contains nPC */ /* R19 has PSR loaded from vector code */ /* assume user did it; syscall checks */
1991/1113
1990/1226		MOVW R1, R8 MOVW R2, R9 MOVW $setSB(SB), R2
1991/1106/sys/src/9/ss/l.s:282,290 – 1991/1113/sys/src/9/ss/l.s:272,278
1990/1226		ADD $8, R1 MOVW (4*(32+2))(R1), R8 /* PSR */ MOVW R8, PSR OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1990/1226		MOVW (4*15)(R1), R15 SAVE R0, R0
1991/1106/sys/src/9/ss/l.s:299,307 – 1991/1113/sys/src/9/ss/l.s:287,293
1990/1226		TEXT puttbr(SB), $0 MOVW R7, TBR OR R0, R0 OR R0, R0 OR R0, R0
1991/1113		NOOP
1990/1226		RETURN TEXT gettbr(SB), $0
1991/1106/sys/src/9/ss/l.s:342,347 – 1991/1113/sys/src/9/ss/l.s:328,338
1990/1226		JMPL (R7)
1990/1223		RETURN
1991/1113		TEXT getpsr(SB), $0 MOVW PSR, R7 RETURN
1990/1231		TEXT putcxreg(SB), $0
1990/1226
1991/1105		MOVW $CONTEXT, R8
1991/1106/sys/src/9/ss/l.s:376,381 – 1991/1113/sys/src/9/ss/l.s:367,377
1990/1227		MOVW R8, (R7, 4)
1990/1226		RETURN
1991/1113		TEXT getw4(SB), $0 MOVW (R7, 4), R7 RETURN
1990/1227		TEXT putwC(SB), $0
1990/1226		MOVW 4(FP), R8
1991/1106/sys/src/9/ss/l.s:475,484 – 1991/1113/sys/src/9/ss/l.s:471,478
1991/01151		TEXT savefpregs(SB), $0 MOVW FSR, 0(R7)
1991/1113		ADD $4, R7 /* assumes R7 is now MOVD-aligned */
1991/01151		ADD $(4+7), R7 /* double-align so can MOVD */ ANDN $7, R7                  MOVD F0, (0*4)(R7) MOVD F2, (2*4)(R7) MOVD F4, (4*4)(R7)
1991/1106/sys/src/9/ss/l.s:507,516 – 1991/1113/sys/src/9/ss/l.s:501,510
1991/01151		OR $PSREF, R8 MOVW R8, PSR MOVW (R7), FSR
1991/1113		NOOP
1991/01151		ADD $(4+7), R7 /* double-align so can MOVD */ ANDN $7, R7
1991/1113		MOVW (R7), FSR ADD $4, R7 /* assumes R7 is now MOVD-aligned */
1991/01151		MOVD (0*4)(R7), F0 MOVD (2*4)(R7), F2