Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add NetBSD/arm32 kvm support.

Browse Source 
Nearly 10 years later... PR/5667 can be closed.
This commit is contained in:
skrll 2008-01-12 20:55:12 +00:00
parent cf47b9b0c7
commit 8af98e5f70
1 changed files with 54 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
gnu/dist/gdb6/gdb/armnbsd-nat.c vendored
View File

@ -32,8 +32,12 @@
#include <machine/reg.h>
#include <machine/frame.h>
/* Support for debugging kernel virtual memory images. */
#include <machine/pcb.h>
#include "arm-tdep.h"
#include "inf-ptrace.h"
#include "bsd-kvm.h"
#ifndef HAVE_GREGSET_T
typedef struct reg gregset_t;
@ -47,6 +51,52 @@ typedef struct fpreg fpregset_t;
extern int arm_apcs_32;
static int
armnbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
struct switchframe sf;
/* The following is true for NetBSD/arm32 in 5.0 and after:
The pcb contains r8-r13 (sp) at the point of context switch in
cpu_switchto() or call of dumpsys(). At that point we have a
stack frame as described by `struct switchframe', which for
NetBSD/arm32 has the following layout:
r4 ascending.
r5 |
r6 |
r7 \|/
old sp
pc
we reconstruct the register state as it would look when we just
returned from cpu_switchto() or dumpsys(). */
if (!arm_apcs_32)
return 0;
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_un.un_32.pcb32_sp == 0)
return 0;
read_memory (pcb->pcb_un.un_32.pcb32_sp, (gdb_byte *) &sf, sizeof sf);
regcache_raw_supply (regcache, ARM_PC_REGNUM, &sf.sf_pc);
regcache_raw_supply (regcache, ARM_SP_REGNUM, &pcb->pcb_un.un_32.pcb32_sp);
regcache_raw_supply (regcache, 12, &pcb->pcb_un.un_32.pcb32_r12);
regcache_raw_supply (regcache, 11, &pcb->pcb_un.un_32.pcb32_r11);
regcache_raw_supply (regcache, 10, &pcb->pcb_un.un_32.pcb32_r10);
regcache_raw_supply (regcache, 9, &pcb->pcb_un.un_32.pcb32_r9);
regcache_raw_supply (regcache, 8, &pcb->pcb_un.un_32.pcb32_r8);
regcache_raw_supply (regcache, 7, &sf.sf_r7);
regcache_raw_supply (regcache, 6, &sf.sf_r6);
regcache_raw_supply (regcache, 5, &sf.sf_r5);
regcache_raw_supply (regcache, 4, &sf.sf_r4);
return 1;
}
void
supply_gregset (gregset_t *gregset)
{
@ -549,6 +599,10 @@ _initialize_arm_netbsd_nat (void)
t->to_store_registers = armnbsd_store_registers;
add_target (t);
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (armnbsd_supply_pcb);
deprecated_add_core_fns (&arm_netbsd_core_fns);
deprecated_add_core_fns (&arm_netbsd_elfcore_fns);
}