-/* Native-dependent code for UltraSPARC systems running NetBSD.
- Copyright 2002, 2003 Free Software Foundation, Inc.
- Contributed by Wasabi Systems, Inc.
+/* Native-dependent code for NetBSD/sparc64.
+
+ Copyright 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
Boston, MA 02111-1307, USA. */
#include "defs.h"
-#include "inferior.h"
-#include "regcache.h"
-#include "sparc-tdep.h"
-#include "sparcnbsd-tdep.h"
+#include "sparc64-tdep.h"
+#include "sparc-nat.h"
-#include <sys/types.h>
-#include <sys/ptrace.h>
-#include <machine/reg.h>
+/* NetBSD is different from the other OSes that support both SPARC and
+ UltraSPARC in that the result of ptrace(2) depends on whether the
+ traced process is 32-bit or 64-bit. */
-/* NOTE: We don't bother with any of the deferred_store nonsense; it
- makes things a lot more complicated than they need to be. */
+static void
+sparc64nbsd_supply_gregset (const struct sparc_gregset *gregset,
+ struct regcache *regcache,
+ int regnum, const void *gregs)
+{
+ int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
-/* Determine if PT_GETREGS fetches this register. */
-static int
-getregs_supplies (int regno)
+ if (sparc32)
+ sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
+ else
+ sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
+}
+
+static void
+sparc64nbsd_collect_gregset (const struct sparc_gregset *gregset,
+ const struct regcache *regcache,
+ int regnum, void *gregs)
+{
+ int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
+
+ if (sparc32)
+ sparc32_collect_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
+ else
+ sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
+}
+
+static void
+sparc64nbsd_supply_fpregset (struct regcache *regcache,
+ int regnum, const void *fpregs)
+{
+ int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
+
+ if (sparc32)
+ sparc32_supply_fpregset (regcache, regnum, fpregs);
+ else
+ sparc64_supply_fpregset (regcache, regnum, fpregs);
+}
+
+static void
+sparc64nbsd_collect_fpregset (const struct regcache *regcache,
+ int regnum, void *fpregs)
{
- /* FIXME: PS_REGNUM for 32-bit code. */
- return (regno == TSTATE_REGNUM
- || regno == PC_REGNUM
- || regno == DEPRECATED_NPC_REGNUM
- || regno == Y_REGNUM
- || (regno >= G0_REGNUM && regno <= G7_REGNUM)
- || (regno >= O0_REGNUM && regno <= O7_REGNUM)
- /* stack regs (handled by sparcnbsd_supply_reg) */
- || (regno >= L0_REGNUM && regno <= I7_REGNUM));
+ int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
+
+ if (sparc32)
+ sparc32_collect_fpregset (regcache, regnum, fpregs);
+ else
+ sparc64_collect_fpregset (regcache, regnum, fpregs);
}
-/* Determine if PT_GETFPREGS fetches this register. */
+/* Determine whether `gregset_t' contains register REGNUM. */
+
static int
-getfpregs_supplies (int regno)
+sparc64nbsd_gregset_supplies_p (int regnum)
{
- return ((regno >= FP0_REGNUM && regno <= (FP0_REGNUM + 47))
- || regno == FPS_REGNUM);
+ if (gdbarch_ptr_bit (current_gdbarch) == 32)
+ return sparc32_gregset_supplies_p (regnum);
+
+ /* Integer registers. */
+ if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
+ || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
+ || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
+ || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
+ return 1;
+
+ /* Control registers. */
+ if (regnum == SPARC64_PC_REGNUM
+ || regnum == SPARC64_NPC_REGNUM
+ || regnum == SPARC64_STATE_REGNUM
+ || regnum == SPARC64_Y_REGNUM)
+ return 1;
+
+ return 0;
}
-void
-fetch_inferior_registers (int regno)
+/* Determine whether `fpregset_t' contains register REGNUM. */
+
+static int
+sparc64nbsd_fpregset_supplies_p (int regnum)
{
- /* We don't use deferred stores. */
- if (deferred_stores)
- internal_error (__FILE__, __LINE__,
- "fetch_inferior_registers: deferred stores pending");
-
- if (regno == -1 || getregs_supplies (regno))
- {
- union {
- struct reg32 regs32;
- struct reg64 regs64;
- } regs;
-
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
-
- if (gdbarch_ptr_bit (current_gdbarch) == 32)
- sparcnbsd_supply_reg32 ((char *) ®s.regs32, regno);
- else
- sparcnbsd_supply_reg64 ((char *) ®s.regs64, regno);
- if (regno != -1)
- return;
- }
-
- if (regno == -1 || getfpregs_supplies (regno))
- {
- union {
- struct fpreg32 fpregs32;
- struct fpreg64 fpregs64;
- } fpregs;
-
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point registers");
-
- if (gdbarch_ptr_bit (current_gdbarch) == 32)
- sparcnbsd_supply_fpreg32 ((char *) &fpregs.fpregs32, regno);
- else
- sparcnbsd_supply_fpreg64 ((char *) &fpregs.fpregs64, regno);
- if (regno != -1)
- return;
- }
+ if (gdbarch_ptr_bit (current_gdbarch) == 32)
+ return sparc32_fpregset_supplies_p (regnum);
+
+ /* Floating-point registers. */
+ if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
+ || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
+ return 1;
+
+ /* Control registers. */
+ if (regnum == SPARC64_FSR_REGNUM)
+ return 1;
+
+ return 0;
}
+\f
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_sparcnbsd_nat (void);
+
void
-store_inferior_registers (int regno)
+_initialize_sparcnbsd_nat (void)
{
- /* We don't use deferred stores. */
- if (deferred_stores)
- internal_error (__FILE__, __LINE__,
- "store_inferior_registers: deferred stores pending");
-
- if (regno == -1 || getregs_supplies (regno))
- {
- union {
- struct reg32 regs32;
- struct reg64 regs64;
- } regs;
-
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
-
- if (gdbarch_ptr_bit (current_gdbarch) == 32)
- sparcnbsd_fill_reg32 ((char *) ®s.regs32, regno);
- else
- sparcnbsd_fill_reg64 ((char *) ®s.regs64, regno);
-
- if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't write registers");
-
- /* Deal with the stack regs. */
- if (regno == -1 || regno == SP_REGNUM
- || (regno >= L0_REGNUM && regno <= I7_REGNUM))
- {
- CORE_ADDR sp = read_register (SP_REGNUM);
- int i;
- char buf[8];
-
- if (sp & 1)
- {
- /* Registers are 64-bit. */
- sp += 2047;
-
- for (i = L0_REGNUM; i <= I7_REGNUM; i++)
- {
- if (regno == -1 || regno == SP_REGNUM || regno == i)
- {
- regcache_collect (i, buf);
- target_write_memory (sp + ((i - L0_REGNUM) * 8),
- buf, sizeof (buf));
- }
- }
- }
- else
- {
- /* Registers are 32-bit. Toss any sign-extension of the stack
- pointer.
-
- FIXME: We don't currently handle 32-bit code in a binary
- that indicated LP64. Do we have to care about that? */
- if (gdbarch_ptr_bit (current_gdbarch) != 32)
- internal_error
- (__FILE__, __LINE__,
- "store_inferior_registers: 32-bit code in 64-bit inferior");
-
- sp &= 0xffffffffUL;
- for (i = L0_REGNUM; i <= I7_REGNUM; i++)
- {
- if (regno == -1 || regno == SP_REGNUM || regno == i)
- {
- regcache_collect (i, buf);
- target_write_memory (sp + ((i - L0_REGNUM) * 4), buf, 4);
- }
- }
- }
- }
-
- if (regno != -1)
- return;
- }
-
- if (regno == -1 || getfpregs_supplies (regno))
- {
- union {
- struct fpreg32 fpregs32;
- struct fpreg64 fpregs64;
- } fpregs;
-
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point registers");
-
- if (gdbarch_ptr_bit (current_gdbarch) == 32)
- sparcnbsd_fill_fpreg32 ((char *) &fpregs.fpregs32, regno);
- else
- sparcnbsd_fill_fpreg64 ((char *) &fpregs.fpregs64, regno);
-
- if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't write floating point registers");
-
- if (regno != -1)
- return;
- }
+ sparc_supply_gregset = sparc64nbsd_supply_gregset;
+ sparc_collect_gregset = sparc64nbsd_collect_gregset;
+ sparc_supply_fpregset = sparc64nbsd_supply_fpregset;
+ sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
+ sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
+ sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
}
projects / thirdparty / binutils-gdb.git / blobdiff