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|
#ifdef AFS_HPUX_ENV
#ifdef hp9000s300
/*
#
# Process assembly language assist for HP 9000 series 300s.
#
*/
text
/*
#
# struct savearea {
# char *topstack;
# }
#
*/
global _PRE_Block
set topstack,0
/* Stuff to allow saving/restoring registers */
set NREGS,13
set REGS,0x3ffe # d1-d7 & a0-a5
/*
# savecontext(f, area1, newsp)
# int (*f)(); struct savearea *area1; char *newsp;
*/
/* Stack offsets of arguments */
set f,8
set area1,12
set newsp,16
global _savecontext
_savecontext:
mov.l &1,_PRE_Block # Dont allow any interrupt finagling
link %a6,&-(NREGS*4) # Save frame pointer & ...
# ... allocate space for nregs registers
/* Save registers */
movem.l ®S,(%sp)
mov.l area1(%a6),%a0 # a0 = base of savearea
mov.l %sp,topstack(%a0) # area->topstack = sp
mov.l newsp(%a6),%d0 # Get new sp
beq.b l1 # If newsp == 0, no stack switch
mov.l %d0,%sp # Switch to new stack
l1:
mov.l f(%a6),%a0 # a0 = f
jsr (%a0) # f()
/* It is impossible to be here, so abort() */
jsr _abort
/*
# returnto(area2)
# struct savearea *area2;
*/
/* Stack offset of argument */
set area2,8
global _returnto
_returnto:
link %a6,&0
mov.l area2(%a6),%a0 # Base of savearea
mov.l topstack(%a0),%sp # Restore sp
/* Restore registers */
movem.l (%sp),®S
add.l &(NREGS*4),%sp
mov.l %sp,%a6 # Argghh...be careful here
unlk %a6
clr.l _PRE_Block
rts # Return to previous process
#else
/* start of S700 code */
#ifdef AFS_HPUX_PIC_ENV
/* this code is PIC */
.CODE
/*
; savecontext(f, area1, newsp)
; int (*f)();
; struct savearea *area1;
; char *newsp;
*/
savecontext
.PROC
/*
; Callinfo sets up register saves using the ENTRY_GR
; and ENTRY_FR parameters. ENTRY_FR=21 is only valid
; for PA 1.1. (How to deal with this for 800?)
*/
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
/*
; The ENTER statement generates register saves and
; procedure setup.
*/
.ENTER
LDI 1,%r1 /* Store a (char) 1 in */
LDW T%PRE_Block(0,%r19),%r31 /* global variable */
STW %r1,0(0,%r31) /* PRE_Block. */
COPY %arg0,%r22 /* Copy arg0 (f) to dyncall's input register */
COMIB,= 0,%arg2,L$0001 /* Compare arg2 (newsp) to 0. Execute the */
/* next instruction regardless of value. */
STW %r30,0(0,%arg1) /* Store the stack pointer in the first */
/* element (0th offset) of arg1 (area1). */
COPY %arg2,%r30 /* Move arg2 (newsp) into the stack ptr. */
L$0001
.CALL
BL $$dyncall,%r31 /* Dynamic call using pointer in r22. */
COPY %r31,%r2
COPY %r20, %r19 /* restore link table. */
.CALL
BL exit,%r2 /* Can't get here, so abort. */
NOP
.LEAVE
.PROCEND
/* returnto(area2)
* struct savearea *area2;
*/
returnto
.PROC
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
/* No ENTRY is used since this is a magic routine. */
LDWS 0(0,%arg0),%r30 /* Load the stack pointer from area2 */
LDW T%PRE_Block(0,%r19),%r31 /* set PRE_Block = 0; */
STW %r0,0(0,%r31)
.LEAVE
.PROCEND
.EXPORT savecontext,ENTRY
.EXPORT returnto,ENTRY
.IMPORT PRE_Block,DATA
.IMPORT $$dyncall,MILLICODE
.IMPORT exit,CODE
.END
#else /* AFS_HPUX_PIC_ENV */
/* non-pic'ified code */
.CODE
/*
; savecontext(f, area1, newsp)
; int (*f)();
; struct savearea *area1;
; char *newsp;
*/
savecontext
.PROC
/*
; Callinfo sets up register saves using the ENTRY_GR
; and ENTRY_FR parameters. ENTRY_FR=21 is only valid
; for PA 1.1. (How to deal with this for 800?)
*/
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
/* The ENTER statement generates register saves and */
/* procedure setup. */
.ENTER
LDI 1,%r31 /* Store a (char) 1 in */
ADDIL L%PRE_Block-$global$,%r27 /* global variable */
STW %r31,R%PRE_Block-$global$(0,%r1) /* PRE_Block. */
COPY %r26,%r22 /* Copy arg0 (f) to dyncall's input register. */
COMIB,= 0,%r24,L$0001 /* Compare arg2 (newsp) to 0. Execute the */
/* next instruction regardless of value. */
STWS %r30,0(0,%r25) /* Store the stack pointer in the first */
/* element (0th offset) of arg1 (area1). */
COPY %r24,%r30 /* Move arg2 (newsp) into the stack ptr. */
L$0001
.CALL
BL $$dyncall,%r31 /* Dynamic call using pointer in r22. */
COPY %r31,%r2
.CALL
BL abort,%r2 /* Can't get here, so abort.
NOP
.LEAVE
.PROCEND
/*
; returnto(area2)
; struct savearea *area2;
*/
returnto
.PROC
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
/* No ENTRY is used since this is a magic routine. */
ADDIL L%PRE_Block-$global$,%r27 /* PRE_Block = 0 */
STW %r0,R%PRE_Block-$global$(0,%r1)
LDWS 0(0,%r26),%r30 /* Load the stack pointer from area2 */
.LEAVE
.PROCEND
.EXPORT savecontext,ENTRY
.EXPORT returnto,ENTRY
.IMPORT $global$,DATA
.IMPORT PRE_Block,DATA
.IMPORT $$dyncall,MILLICODE
.IMPORT abort,CODE
.END
#endif /* AFS_HPUX_PIC_ENV */
#endif /* hp9000s300 */
#endif /* AFS_HPUX_ENV */
#ifdef AFS_BSD_ENV
#ifdef AFS_BSD_PIC_ENV
/* this code is PIC */
.CODE
/*
; savecontext(f, area1, newsp)
; int (*f)();
; struct savearea *area1;
; char *newsp;
*/
savecontext
.PROC
/*
; Callinfo sets up register saves using the ENTRY_GR
; and ENTRY_FR parameters. ENTRY_FR=21 is only valid
; for PA 1.1. (How to deal with this for 800?)
*/
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
.ENTRY
STW %r2, -20(%sr0,%r30)
stwm %r3, 0x80(%r30)
stw %r4, -0x40(%r30)
stw %r5, -0x3c(%r30)
stw %r6, -0x38(%r30)
stw %r7, -0x34(%r30)
stw %r8, -0x30(%r30)
stw %r9, -0x2c(%r30)
stw %r10, -0x28(%r30)
stw %r11, -0x24(%r30)
stw %r12, -0x20(%r30)
stw %r13, -0x1c(%r30)
stw %r14, -0x18(%r30)
stw %r15, -0x14(%r30)
stw %r16, -0x10(%r30)
stw %r17, -0x0c(%r30)
stw %r18, -0x08(%r30)
stw %r19, -0x04(%r30)
LDI 1,%r1 /* Store a (char) 1 in */
LDW T%PRE_Block(%sr0,%r19),%r31 /* global variable */
STW %r1,0(%sr0,%r31) /* PRE_Block. */
COPY %arg0,%r22 /* Copy arg0 (f) to dyncall's input register */
COMIB,= 0,%arg2,L$0001 /* Compare arg2 (newsp) to 0. Execute the */
/* next instruction regardless of value. */
STW %r30,0(%sr0,%arg1)/* Store the stack pointer in the first */
/* element (0th offset) of arg1 (area1). */
COPY %arg2,%r30 /* Move arg2 (newsp) into the stack ptr. */
L$0001
ldo 64(%r30), %r30
.CALL
BL $$dyncall,%r31 /* Dynamic call using pointer in r22. */
COPY %r31,%r2
COPY %r20, %r19 /* restore link table. */
.CALL
BL exit,%r2 /* Can't get here, so abort. */
NOP
.LEAVE
.PROCEND
/* returnto(area2)
* struct savearea *area2;
*/
returnto
.PROC
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
/* No ENTRY is used since this is a magic routine. */
LDWS 0(0,%arg0),%r30 /* Load the stack pointer from area2 */
ldw -0x04(%r30), %r19
ldw -0x08(%r30), %r18
ldw -0x0c(%r30), %r17
ldw -0x10(%r30), %r16
ldw -0x14(%r30), %r15
ldw -0x18(%r30), %r14
ldw -0x1c(%r30), %r13
ldw -0x20(%r30), %r12
ldw -0x24(%r30), %r11
ldw -0x28(%r30), %r10
ldw -0x2c(%r30), %r9
ldw -0x30(%r30), %r8
ldw -0x34(%r30), %r7
ldw -0x38(%r30), %r6
ldw -0x3c(%r30), %r5
ldw -0x40(%r30), %r4
ldw,mb -0x80(%r30), %r3
LDW T%PRE_Block(0,%r19),%r31 /* set PRE_Block = 0; */
LDW -20(%sr0,%r30), %r2
BV %r0(%r2)
STW %r0,0(0,%r31)
.LEAVE
.PROCEND
.EXPORT savecontext,ENTRY
.EXPORT returnto,ENTRY
.IMPORT PRE_Block,DATA
.IMPORT $$dyncall,MILLICODE
.IMPORT exit,CODE
.END
#else /* AFS_BSD_PIC_ENV */
/* non-pic'ified code */
.IMPORT $global$,DATA
.IMPORT PRE_Block,DATA
.IMPORT $$dyncall,MILLICODE
.IMPORT abort,CODE
.text
/*
; savecontext(f, area1, newsp)
; int (*f)();
; struct savearea *area1;
; char *newsp;
*/
.EXPORT savecontext,ENTRY
savecontext
.PROC
/*
; Callinfo sets up register saves using the ENTRY_GR
; and ENTRY_FR parameters. ENTRY_FR=21 is only valid
; for PA 1.1. (How to deal with this for 800?)
*/
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
.ENTRY
STW %r2, -20(%sr0,%r30)
stwm %r3, 0x80(%r30)
stw %r4, -0x40(%r30)
stw %r5, -0x3c(%r30)
stw %r6, -0x38(%r30)
stw %r7, -0x34(%r30)
stw %r8, -0x30(%r30)
stw %r9, -0x2c(%r30)
stw %r10, -0x28(%r30)
stw %r11, -0x24(%r30)
stw %r12, -0x20(%r30)
stw %r13, -0x1c(%r30)
stw %r14, -0x18(%r30)
stw %r15, -0x14(%r30)
stw %r16, -0x10(%r30)
stw %r17, -0x0c(%r30)
stw %r18, -0x08(%r30)
stw %r19, -0x04(%r30)
LDI 1,%r31 /* Store a (char) 1 in */
ADDIL L%PRE_Block-$global$,%r27 /* global variable */
STW %r31,R%PRE_Block-$global$(0,%r1) /* PRE_Block. */
COPY %r26,%r22 /* Copy arg0 (f) to dyncall's input register. */
COMIB,= 0,%r24,L$0001 /* Compare arg2 (newsp) to 0. Execute the */
/* next instruction regardless of value. */
STWS %r30,0(0,%r25) /* Store the stack pointer in the first */
/* element (0th offset) of arg1 (area1). */
COPY %r24,%r30 /* Move arg2 (newsp) into the stack ptr. */
L$0001
ldo 64(%r30), %r30
.CALL
BL $$dyncall,%r31 /* Dynamic call using pointer in r22. */
COPY %r31,%r2
.CALL
BL abort,%r2 /* Can't get here, so abort. */
NOP
.EXIT
.PROCEND
.text
/*
; returnto(area2)
; struct savearea *area2;
*/
.EXPORT returnto,ENTRY
returnto
.PROC
.CALLINFO CALLER,FRAME=0,SAVE_RP,ENTRY_GR=18,ENTRY_FR=21
.ENTRY
LDWS 0(0,%r26),%r30 /* Load the stack pointer from area2 */
ADDIL L%PRE_Block-$global$,%r27 /* PRE_Block = 0 */
ldw -0x04(%r30), %r19
ldw -0x08(%r30), %r18
ldw -0x0c(%r30), %r17
ldw -0x10(%r30), %r16
ldw -0x14(%r30), %r15
ldw -0x18(%r30), %r14
ldw -0x1c(%r30), %r13
ldw -0x20(%r30), %r12
ldw -0x24(%r30), %r11
ldw -0x28(%r30), %r10
ldw -0x2c(%r30), %r9
ldw -0x30(%r30), %r8
ldw -0x34(%r30), %r7
ldw -0x38(%r30), %r6
ldw -0x3c(%r30), %r5
ldw -0x40(%r30), %r4
ldw,mb -0x80(%r30), %r3
LDW -20(%sr0,%r30), %r2
BV %r0(%r2)
STW %r0,R%PRE_Block-$global$(0,%r1)
.EXIT
.PROCEND
.END
#endif /* AFS_BSD_PIC_ENV */
#endif /* AFS_BSD_ENV */
|
