diff options
Diffstat (limited to 'gdb/sparc64nbsd-nat.c')
| -rw-r--r-- | gdb/sparc64nbsd-nat.c | 275 |
1 files changed, 103 insertions, 172 deletions
diff --git a/gdb/sparc64nbsd-nat.c b/gdb/sparc64nbsd-nat.c index c68b96b..9157703 100644 --- a/gdb/sparc64nbsd-nat.c +++ b/gdb/sparc64nbsd-nat.c @@ -1,6 +1,6 @@ -/* 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. @@ -20,189 +20,120 @@ 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; } + +/* 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; } |