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authorenami <enami@NetBSD.org>2009-11-27 02:51:15 +0000
committerenami <enami@NetBSD.org>2009-11-27 02:51:15 +0000
commit72ec821622b26b924e43434223498cef12bc1663 (patch)
tree2c19de21dc150ba98da81529703e3135ea98dd7b /gnu
parent3f09797207c914236236e604744c2735f629ff5c (diff)
Lookup lwp0.l_addr instead of proc0paddr to locate PCB.
Diffstat (limited to 'gnu')
-rw-r--r--gnu/dist/gdb6/gdb/bsd-kvm.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/gnu/dist/gdb6/gdb/bsd-kvm.c b/gnu/dist/gdb6/gdb/bsd-kvm.c
index 3284950ea92..f38e0fb4210 100644
--- a/gnu/dist/gdb6/gdb/bsd-kvm.c
+++ b/gnu/dist/gdb6/gdb/bsd-kvm.c
@@ -211,6 +211,27 @@ bsd_kvm_fetch_registers (int regnum)
return;
}
+#if 1 /* TODO: HAVE_STRUCT_LWP_L_ADDR */
+ memset (nl, 0, sizeof nl);
+ nl[0].n_name = "_lwp0";
+
+ if (kvm_nlist (core_kd, nl) == -1)
+ error (("%s"), kvm_geterr (core_kd));
+
+ if (nl[0].n_value != 0)
+ {
+ struct pcb *paddr;
+
+ /* Found lwp0. */
+ nl[0].n_value += offsetof (struct lwp, l_addr);
+ if (kvm_read (core_kd, nl[0].n_value, &paddr, sizeof paddr) == -1)
+ error (("%s"), kvm_geterr (core_kd));
+
+ bsd_kvm_fetch_pcb (paddr);
+ return;
+ }
+#endif
+
#ifdef HAVE_STRUCT_THREAD_TD_PCB
/* In FreeBSD kernels for 5.0-RELEASE and later, the PCB no longer
lives in `struct proc' but in `struct thread'. The `struct