Date: Sat, 20 Mar 2004 19:55:16 -0800 (PST) From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 49427 for review Message-ID: <200403210355.i2L3tG4h045488@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=49427 Change 49427 by marcel@marcel_nfs on 2004/03/20 19:55:07 o Port the GDB backend to amd64. o Introduce gdb_cpu_trap() to give MD code a chance to do some necessary preparations (like flushing). o Fill in the real register values on sparc64. Affected files ... .. //depot/projects/gdb/sys/alpha/alpha/gdb_machdep.c#2 edit .. //depot/projects/gdb/sys/amd64/amd64/gdb_machdep.c#1 add .. //depot/projects/gdb/sys/amd64/include/gdb_machdep.h#1 add .. //depot/projects/gdb/sys/gdb/gdb.h#6 edit .. //depot/projects/gdb/sys/gdb/gdb_main.c#7 edit .. //depot/projects/gdb/sys/i386/i386/gdb_machdep.c#3 edit .. //depot/projects/gdb/sys/ia64/ia64/gdb_machdep.c#3 edit .. //depot/projects/gdb/sys/sparc64/include/gdb_machdep.h#2 edit .. //depot/projects/gdb/sys/sparc64/sparc64/gdb_machdep.c#2 edit Differences ... ==== //depot/projects/gdb/sys/alpha/alpha/gdb_machdep.c#2 (text+ko) ==== @@ -80,30 +80,46 @@ } int -gdb_cpu_signal(int vector, int dummy) +gdb_cpu_signal(int entry, int code) { - - switch (vector) { - case 0: return (SIGFPE); /* Divide by zero. */ - case 1: return (SIGTRAP); /* Debug exception. */ - case 3: return (SIGTRAP); /* Breakpoint. */ - case 4: return (SIGURG); /* into instr. (overflow). */ - case 5: return (SIGURG); /* bound instruction. */ - case 6: return (SIGILL); /* Invalid opcode. */ - case 7: return (SIGFPE); /* Coprocessor not present. */ - case 8: return (SIGEMT); /* Double fault. */ - case 9: return (SIGSEGV); /* Coprocessor segment overrun. */ - case 10: return (SIGTRAP); /* Invalid TSS (also single-step). */ - case 11: return (SIGSEGV); /* Segment not present. */ - case 12: return (SIGSEGV); /* Stack exception. */ - case 13: return (SIGSEGV); /* General protection. */ - case 14: return (SIGSEGV); /* Page fault. */ - case 16: return (SIGEMT); /* Coprocessor error. */ + switch (entry) { + case ALPHA_KENTRY_INT: + case ALPHA_KENTRY_ARITH: + return (SIGILL); /* Can this happen? */ + case ALPHA_KENTRY_MM: + switch (code) { + case ALPHA_MMCSR_INVALTRANS: + return (SIGSEGV); + case ALPHA_MMCSR_ACCESS: + case ALPHA_MMCSR_FOR: + case ALPHA_MMCSR_FOE: + case ALPHA_MMCSR_FOW: + return (SIGBUS); + } + case ALPHA_KENTRY_IF: + switch (code) { + case ALPHA_IF_CODE_BUGCHK: + case ALPHA_IF_CODE_BPT: + return (SIGTRAP); + case ALPHA_IF_CODE_GENTRAP: + case ALPHA_IF_CODE_FEN: + case ALPHA_IF_CODE_OPDEC: + return (SIGILL); + } + case ALPHA_KENTRY_UNA: + return (SIGSEGV); + case ALPHA_KENTRY_SYS: + return (SIGILL); } - return (SIGEMT); + return (SIGILL); } void gdb_cpu_singlestep(int on, struct trapframe *tf) { } + +void +gdb_cpu_trap(int entry, int code, struct trapframe *tf) +{ +} ==== //depot/projects/gdb/sys/gdb/gdb.h#6 (text+ko) ==== @@ -67,5 +67,6 @@ void gdb_cpu_setreg(int, struct trapframe *, uintmax_t); int gdb_cpu_signal(int, int); void gdb_cpu_singlestep(int, struct trapframe *); +void gdb_cpu_trap(int, int, struct trapframe *); #endif /* !_GDB_GDB_H_ */ ==== //depot/projects/gdb/sys/gdb/gdb_main.c#7 (text+ko) ==== @@ -99,6 +99,9 @@ tid_cont = -1; tid_gen = (p != NULL) ? p->p_pid : 0; + /* Give MD code a change to set things up. */ + gdb_cpu_trap(type, code, tf); + /* * Send a T packet. We currently do not support watchpoints (the * awatch, rwatch or watch elements). ==== //depot/projects/gdb/sys/i386/i386/gdb_machdep.c#3 (text+ko) ==== @@ -120,7 +120,11 @@ void gdb_cpu_singlestep(int on, struct trapframe *tf) { - tf->tf_eflags &= ~PSL_T; tf->tf_eflags |= (on) ? PSL_T : 0; } + +void +gdb_cpu_trap(int type, int code, struct trapframe *tf) +{ +} ==== //depot/projects/gdb/sys/ia64/ia64/gdb_machdep.c#3 (text+ko) ==== @@ -45,7 +45,7 @@ case GDB_REG_FP: return (tf->tf_special.bspstore + tf->tf_special.ndirty); case GDB_REG_PC: - return (tf->tf_special.iip); + return (tf->tf_special.iip + ((tf->tf_special.psr >> 41) & 3)); case GDB_REG_SP: return (tf->tf_special.sp); } @@ -84,28 +84,18 @@ int gdb_cpu_signal(int vector, int dummy) { + return (vector); +} - switch (vector) { - case 0: return (SIGFPE); /* Divide by zero. */ - case 1: return (SIGTRAP); /* Debug exception. */ - case 3: return (SIGTRAP); /* Breakpoint. */ - case 4: return (SIGURG); /* into instr. (overflow). */ - case 5: return (SIGURG); /* bound instruction. */ - case 6: return (SIGILL); /* Invalid opcode. */ - case 7: return (SIGFPE); /* Coprocessor not present. */ - case 8: return (SIGEMT); /* Double fault. */ - case 9: return (SIGSEGV); /* Coprocessor segment overrun. */ - case 10: return (SIGTRAP); /* Invalid TSS (also single-step). */ - case 11: return (SIGSEGV); /* Segment not present. */ - case 12: return (SIGSEGV); /* Stack exception. */ - case 13: return (SIGSEGV); /* General protection. */ - case 14: return (SIGSEGV); /* Page fault. */ - case 16: return (SIGEMT); /* Coprocessor error. */ - } - return (SIGEMT); +void +gdb_cpu_singlestep(int on, struct trapframe *tf) +{ } void -gdb_cpu_singlestep(int on, struct trapframe *tf) +gdb_cpu_trap(int vector, int dummy, struct trapframe *tf) { + __asm __volatile("flushrs;;"); + if (vector == IA64_VEC_BREAK && tf->tf_special.ifa == IA64_FIXED_BREAK) + tf->tf_special.psr += IA64_PSR_RI_1; } ==== //depot/projects/gdb/sys/sparc64/include/gdb_machdep.h#2 (text+ko) ==== @@ -31,8 +31,8 @@ #define GDB_BUFSZ 600 -#define GDB_REG_FP 328 -#define GDB_REG_PC 331 -#define GDB_REG_SP 12 +#define GDB_REG_FP 30 +#define GDB_REG_PC 80 +#define GDB_REG_SP 14 #endif /* !_MACHINE_GDB_MACHDEP_H_ */ ==== //depot/projects/gdb/sys/sparc64/sparc64/gdb_machdep.c#2 (text+ko) ==== @@ -80,30 +80,20 @@ } int -gdb_cpu_signal(int vector, int dummy) +gdb_cpu_signal(int type, int dummy) { + return (type); +} - switch (vector) { - case 0: return (SIGFPE); /* Divide by zero. */ - case 1: return (SIGTRAP); /* Debug exception. */ - case 3: return (SIGTRAP); /* Breakpoint. */ - case 4: return (SIGURG); /* into instr. (overflow). */ - case 5: return (SIGURG); /* bound instruction. */ - case 6: return (SIGILL); /* Invalid opcode. */ - case 7: return (SIGFPE); /* Coprocessor not present. */ - case 8: return (SIGEMT); /* Double fault. */ - case 9: return (SIGSEGV); /* Coprocessor segment overrun. */ - case 10: return (SIGTRAP); /* Invalid TSS (also single-step). */ - case 11: return (SIGSEGV); /* Segment not present. */ - case 12: return (SIGSEGV); /* Stack exception. */ - case 13: return (SIGSEGV); /* General protection. */ - case 14: return (SIGSEGV); /* Page fault. */ - case 16: return (SIGEMT); /* Coprocessor error. */ - } - return (SIGEMT); +void +gdb_cpu_singlestep(int on, struct trapframe *tf) +{ + /* XXX dunno. */ + TF_DONE(tf); } void -gdb_cpu_singlestep(int on, struct trapframe *tf) +gdb_cpu_trap(int type, int dummy, struct trapframe *tf) { + flushw(); }
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