projects / OpenSPARC-T2-SAM / blame
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| 920dae64 AT |
1 | // ========== Copyright Header Begin ========================================== |
| 2 | // | |
| 3 | // OpenSPARC T2 Processor File: SS_BreakPoint.cc | |
| 4 | // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 5 | // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. | |
| 6 | // | |
| 7 | // The above named program is free software; you can redistribute it and/or | |
| 8 | // modify it under the terms of the GNU General Public | |
| 9 | // License version 2 as published by the Free Software Foundation. | |
| 10 | // | |
| 11 | // The above named program is distributed in the hope that it will be | |
| 12 | // useful, but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | // General Public License for more details. | |
| 15 | // | |
| 16 | // You should have received a copy of the GNU General Public | |
| 17 | // License along with this work; if not, write to the Free Software | |
| 18 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 19 | // | |
| 20 | // ========== Copyright Header End ============================================ | |
| 21 | ||
| 22 | #include "SS_BreakPoint.h" | |
| 23 | #include "SS_Signal.h" | |
| 24 | #include "SS_Strand.h" | |
| 25 | ||
| 26 | BL_Mutex SS_BreakPoint::id_mutex; | |
| 27 | SS_BreakPoint::Ident SS_BreakPoint::id_count = 0; | |
| 28 | ||
| 29 | SS_BreakPoint::SS_BreakPoint( Break _type, SS_BreakPoint* _next )/*{{{*/ | |
| 30 | : | |
| 31 | type(_type), | |
| 32 | enabled(true), | |
| 33 | triggered(false), | |
| 34 | next(_next), | |
| 35 | link(0) | |
| 36 | { | |
| 37 | id_mutex.lock(); | |
| 38 | id = id_count; | |
| 39 | id_count++; | |
| 40 | id_mutex.unlock(); | |
| 41 | } | |
| 42 | /*}}}*/ | |
| 43 | bool SS_BreakPoint::trigger( SS_Strand* s )/*{{{*/ | |
| 44 | { | |
| 45 | if (triggered) | |
| 46 | { | |
| 47 | triggered = false; | |
| 48 | } | |
| 49 | else | |
| 50 | { | |
| 51 | triggered = true; | |
| 52 | SS_Signal* sgn = s->msg.make_signal(SS_Signal::BREAKPOINT); | |
| 53 | sgn->breakpoint = this; | |
| 54 | s->post_signal(sgn); | |
| 55 | ||
| 56 | // In case of trc_step(1) we should get out of the loop | |
| 57 | // signaling a breakpoint. Breaks are reported to the | |
| 58 | // UI though a non zero return of step. See SS_Strand::trc_step() | |
| 59 | // for why we set break_hit prematurely. | |
| 60 | ||
| 61 | s->break_hit = this; | |
| 62 | } | |
| 63 | return triggered; | |
| 64 | } | |
| 65 | /*}}}*/ | |
| 66 | void SS_BreakPoint::unlink( SS_BreakPoint** root )/*{{{*/ | |
| 67 | { | |
| 68 | SS_BreakPoint* prev = 0; | |
| 69 | SS_BreakPoint* help = *root; | |
| 70 | ||
| 71 | while (help != this) | |
| 72 | { | |
| 73 | prev = help; | |
| 74 | help = help->link; | |
| 75 | } | |
| 76 | (prev ? prev->link : *root) = this->link; | |
| 77 | } | |
| 78 | /*}}}*/ | |
| 79 | ||
| 80 | extern "C" SS_Vaddr run_exe_breakpoint( SS_Vaddr pc, SS_Vaddr npc, SS_Strand* s, SS_Instr* i )/*{{{*/ | |
| 81 | { | |
| 82 | SS_BreakPoint* bp = i->bp; | |
| 83 | ||
| 84 | if (bp->enabled) | |
| 85 | { | |
| 86 | if (bp->triggered) | |
| 87 | { | |
| 88 | bp->triggered = false; | |
| 89 | } | |
| 90 | else | |
| 91 | { | |
| 92 | bp->triggered = true; | |
| 93 | SS_Signal* sgn = s->msg.make_signal(SS_Signal::BREAKPOINT); | |
| 94 | sgn->breakpoint = bp; | |
| 95 | s->post_signal(sgn); | |
| 96 | return pc; | |
| 97 | } | |
| 98 | } | |
| 99 | return (bp->inst.exe)(pc,npc,s,&bp->inst); | |
| 100 | } | |
| 101 | /*}}}*/ | |
| 102 | void SS_BreakPoint::remove()/*{{{*/ | |
| 103 | { | |
| 104 | orig->exe = inst.exe; | |
| 105 | orig->rs1 = inst.rs1; | |
| 106 | orig->rs2 = inst.rs2; | |
| 107 | orig->rs3 = inst.rs3; | |
| 108 | orig->rd = inst.rd; | |
| 109 | orig->bp = inst.bp; | |
| 110 | orig->opc = inst.opc; | |
| 111 | orig->flg = inst.flg; | |
| 112 | } | |
| 113 | /*}}}*/ |