dbmentry.S (8013:2dfcde2e9998) dbmentry.S (8023:36c59449dc93)
1/*
2 * Copyright (c) 2003, 2004
3 * The Regents of The University of Michigan
4 * All Rights Reserved
5 *
6 * This code is part of the M5 simulator, developed by Nathan Binkert,
7 * Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions
8 * from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew

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51 * SOFTWARE.
52 */
53
54/*
55 * Debug Monitor Entry code
56 */
57#include "fromHudsonOsf.h"
58
1/*
2 * Copyright (c) 2003, 2004
3 * The Regents of The University of Michigan
4 * All Rights Reserved
5 *
6 * This code is part of the M5 simulator, developed by Nathan Binkert,
7 * Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions
8 * from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew

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51 * SOFTWARE.
52 */
53
54/*
55 * Debug Monitor Entry code
56 */
57#include "fromHudsonOsf.h"
58
59 .extern myAlphaAccess
59 .text
60
61/* return address and padding to octaword align */
62#define STARTFRM 16
63
64 .globl _start
65 .ent _start, 0
66_start:
67_entry:
68 br t0, 2f # get the current PC
692: ldgp gp, 0(t0) # init gp
70
60 .text
61
62/* return address and padding to octaword align */
63#define STARTFRM 16
64
65 .globl _start
66 .ent _start, 0
67_start:
68_entry:
69 br t0, 2f # get the current PC
702: ldgp gp, 0(t0) # init gp
71
71 /*
72 * SimOS. Stack pointer is start of a valid phys or KSEG page
73 */
72/* Processor 0 start stack frame is begining of physical memory (0)
73 Other processors spin here waiting to get their stacks from
74 Processor 0, then they can progress as normal.
75*/
76 call_pal PAL_WHAMI_ENTRY
77 beq v0, cpuz
78 ldq t3, m5AlphaAccess
79 addq t3,0x70,t3 # *** If offset in console alpha access struct changes
80 # This must be changed as well!
81 bis zero,8,t4
82 mulq t4,v0,t4
83 addq t3,t4,t3
84cpuwait: ldq t4, 0(t3)
85 beq t4, cpuwait
86 bis t4,t4,sp
74
87
75 bis sp,sp,s0 /* save sp */
76
88
89cpuz: bis sp,sp,s0 /* save sp */
90
77slave: lda v0,(8*1024)(sp) /* end of page */
78
79 subq zero, 1, t0
80 sll t0, 42, t0
81 bis t0, v0, sp
82
83 lda sp, -STARTFRM(sp) # Create a stack frame
84 stq ra, 0(sp) # Place return address on the stack

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91 */
92 lda a0, 1(zero)
93 call_pal PAL_WRFEN_ENTRY
94
95/*
96 * Every good C program has a main()
97 */
98
91slave: lda v0,(8*1024)(sp) /* end of page */
92
93 subq zero, 1, t0
94 sll t0, 42, t0
95 bis t0, v0, sp
96
97 lda sp, -STARTFRM(sp) # Create a stack frame
98 stq ra, 0(sp) # Place return address on the stack

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105 */
106 lda a0, 1(zero)
107 call_pal PAL_WRFEN_ENTRY
108
109/*
110 * Every good C program has a main()
111 */
112
113/* If stack pointer was 0, then this is CPU0*/
99 beq s0,master
100
101 call_pal PAL_WHAMI_ENTRY
102 bis v0,v0,a0
103 jsr ra, SlaveLoop
104master:
105 jsr ra, main
106

--- 113 unchanged lines hidden --- 		114 beq s0,master
115
116 call_pal PAL_WHAMI_ENTRY
117 bis v0,v0,a0
118 jsr ra, SlaveLoop
119master:
120 jsr ra, main
121

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