Aren/NetBSD
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bring forward a change from the old gdb:

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Define IN_SIGTRAMP() as nbsd_in_sigtramp(), a new function which knows
how to find the address of the signal trampoline at runtime, thus allowing
one gdb binary to work on all NetBSD/m68k machines.
This commit is contained in:
chs 2002-02-09 19:37:38 +00:00
parent bbd559bc7a
commit dcee4d2ab2
2 changed files with 31 additions and 5 deletions
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9
gnu/dist/toolchain/gdb/config/m68k/tm-nbsd.h vendored
View File

@ -29,12 +29,11 @@
#define BPT_VECTOR 0x2
/* Address of end of stack space. */
#define STACK_END_ADDR USRSTACK
/* For NetBSD, sigtramp is 32 bytes before STACK_END_ADDR,
but we don't know where that is until run-time! */
/* For NetBSD, sigtramp is 32 bytes before STACK_END_ADDR. */
#define SIGTRAMP_START(pc) (STACK_END_ADDR - 32)
#define SIGTRAMP_END(pc) (STACK_END_ADDR)
extern int nbsd_in_sigtramp(CORE_ADDR);
#define IN_SIGTRAMP(pc, name) nbsd_in_sigtramp (pc)
#include "m68k/tm-m68k.h"
#include <tm-nbsd.h>

27
gnu/dist/toolchain/gdb/m68k-tdep.c vendored
View File

@ -704,6 +704,33 @@ m68k_saved_pc_after_call (frame)
return read_memory_integer (read_register (SP_REGNUM), 4);
}
/* For NetBSD, sigtramp is 32 bytes before STACK_END_ADDR,
but we don't know where that is until run-time! */
#ifdef TM_NBSD_H
int
nbsd_in_sigtramp (pc)
CORE_ADDR pc;
{
static CORE_ADDR stack_end_addr;
struct minimal_symbol *msymbol;
CORE_ADDR pssaddr;
int rv;
if (stack_end_addr == 0) {
msymbol = lookup_minimal_symbol("__ps_strings", NULL, NULL);
if (msymbol == NULL)
pssaddr = 0x40a0; /* XXX return 0? */
else
pssaddr = SYMBOL_VALUE_ADDRESS(msymbol);
stack_end_addr = read_memory_integer (pssaddr, 4);
stack_end_addr = (stack_end_addr + 0xFF) & ~0xFF;
}
rv = ((pc >= (stack_end_addr - 32)) &&
(pc < stack_end_addr));
return rv;
}
#endif /* TM_NBSD_H */
void
_initialize_m68k_tdep ()