diff options
Diffstat (limited to 'gdb/sparcnbsd-tdep.c')
-rw-r--r-- | gdb/sparcnbsd-tdep.c | 465 |
1 files changed, 43 insertions, 422 deletions
diff --git a/gdb/sparcnbsd-tdep.c b/gdb/sparcnbsd-tdep.c index f2595074048..4a0abb1f114 100644 --- a/gdb/sparcnbsd-tdep.c +++ b/gdb/sparcnbsd-tdep.c @@ -1,4 +1,5 @@ -/* Target-dependent code for SPARC systems running NetBSD. +/* Target-dependent code for NetBSD/sparc. + Copyright 2002, 2003 Free Software Foundation, Inc. Contributed by Wasabi Systems, Inc. @@ -21,393 +22,51 @@ #include "defs.h" #include "gdbcore.h" -#include "regcache.h" -#include "target.h" -#include "value.h" #include "osabi.h" +#include "regcache.h" +#include "solib-svr4.h" #include "gdb_string.h" #include "sparc-tdep.h" -#include "sparcnbsd-tdep.h" #include "nbsd-tdep.h" -#include "solib-svr4.h" - -#define REG32_OFFSET_PSR (0 * 4) -#define REG32_OFFSET_PC (1 * 4) -#define REG32_OFFSET_NPC (2 * 4) -#define REG32_OFFSET_Y (3 * 4) -#define REG32_OFFSET_GLOBAL (4 * 4) -#define REG32_OFFSET_OUT (12 * 4) - -#define REG64_OFFSET_TSTATE (0 * 8) -#define REG64_OFFSET_PC (1 * 8) -#define REG64_OFFSET_NPC (2 * 8) -#define REG64_OFFSET_Y (3 * 8) -#define REG64_OFFSET_GLOBAL (4 * 8) -#define REG64_OFFSET_OUT (12 * 8) - -void -sparcnbsd_supply_reg32 (char *regs, int regno) -{ - int i; - - if (regno == PS_REGNUM || regno == -1) - supply_register (PS_REGNUM, regs + REG32_OFFSET_PSR); - - if (regno == PC_REGNUM || regno == -1) - supply_register (PC_REGNUM, regs + REG32_OFFSET_PC); - - if (regno == DEPRECATED_NPC_REGNUM || regno == -1) - supply_register (DEPRECATED_NPC_REGNUM, regs + REG32_OFFSET_NPC); - - if (regno == Y_REGNUM || regno == -1) - supply_register (Y_REGNUM, regs + REG32_OFFSET_Y); - - if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1) - { - if (regno == G0_REGNUM || regno == -1) - supply_register (G0_REGNUM, NULL); /* %g0 is always zero */ - for (i = G1_REGNUM; i <= G7_REGNUM; i++) - { - if (regno == i || regno == -1) - supply_register (i, regs + REG32_OFFSET_GLOBAL + - ((i - G0_REGNUM) * 4)); - } - } - - if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1) - { - for (i = O0_REGNUM; i <= O7_REGNUM; i++) - { - if (regno == i || regno == -1) - supply_register (i, regs + REG32_OFFSET_OUT + - ((i - O0_REGNUM) * 4)); - } - } - - /* Inputs and Locals are stored onto the stack by by the kernel. */ - if ((regno >= L0_REGNUM && regno <= I7_REGNUM) || regno == -1) - { - CORE_ADDR sp = read_register (SP_REGNUM); - char buf[4]; - - for (i = L0_REGNUM; i <= I7_REGNUM; i++) - { - if (regno == i || regno == -1) - { - target_read_memory (sp + ((i - L0_REGNUM) * 4), - buf, sizeof (buf)); - supply_register (i, buf); - } - } - } - - /* FIXME: If we don't set these valid, read_register_bytes() rereads - all the regs every time it is called! */ - if (regno == WIM_REGNUM || regno == -1) - supply_register (WIM_REGNUM, NULL); - if (regno == TBR_REGNUM || regno == -1) - supply_register (TBR_REGNUM, NULL); - if (regno == CPS_REGNUM || regno == -1) - supply_register (CPS_REGNUM, NULL); -} - -void -sparcnbsd_supply_reg64 (char *regs, int regno) +const struct sparc_gregset sparcnbsd_gregset = { - int i; - char buf[8]; - - if (regno == TSTATE_REGNUM || regno == -1) - supply_register (PS_REGNUM, regs + REG64_OFFSET_TSTATE); - - if (regno == PC_REGNUM || regno == -1) - supply_register (PC_REGNUM, regs + REG64_OFFSET_PC); - - if (regno == DEPRECATED_NPC_REGNUM || regno == -1) - supply_register (DEPRECATED_NPC_REGNUM, regs + REG64_OFFSET_NPC); - - if (regno == Y_REGNUM || regno == -1) - { - memset (buf, 0, sizeof (buf)); - memcpy (&buf[4], regs + REG64_OFFSET_Y, 4); - supply_register (Y_REGNUM, buf); - } - - if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1) - { - if (regno == G0_REGNUM || regno == -1) - supply_register (G0_REGNUM, NULL); /* %g0 is always zero */ - for (i = G1_REGNUM; i <= G7_REGNUM; i++) - { - if (regno == i || regno == -1) - supply_register (i, regs + REG64_OFFSET_GLOBAL + - ((i - G0_REGNUM) * 8)); - } - } - - if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1) - { - for (i = O0_REGNUM; i <= O7_REGNUM; i++) - { - if (regno == i || regno == -1) - supply_register (i, regs + REG64_OFFSET_OUT + - ((i - O0_REGNUM) * 8)); - } - } - - /* Inputs and Locals are stored onto the stack by by the kernel. */ - if ((regno >= L0_REGNUM && regno <= I7_REGNUM) || regno == -1) - { - CORE_ADDR sp = read_register (SP_REGNUM); - char buf[8]; - - if (sp & 1) - { - /* Registers are 64-bit. */ - sp += 2047; - - for (i = L0_REGNUM; i <= I7_REGNUM; i++) - { - if (regno == i || regno == -1) - { - target_read_memory (sp + ((i - L0_REGNUM) * 8), - buf, sizeof (buf)); - supply_register (i, buf); - } - } - } - else - { - /* Registers are 32-bit. Toss any sign-extension of the stack - pointer, clear out the top half of the temporary buffer, and - put the register value in the bottom half. */ - - sp &= 0xffffffffUL; - memset (buf, 0, sizeof (buf)); - for (i = L0_REGNUM; i <= I7_REGNUM; i++) - { - if (regno == i || regno == -1) - { - target_read_memory (sp + ((i - L0_REGNUM) * 4), - &buf[4], sizeof (buf)); - supply_register (i, buf); - } - } - } - } - - /* FIXME: If we don't set these valid, read_register_bytes() rereads - all the regs every time it is called! */ - if (regno == WIM_REGNUM || regno == -1) - supply_register (WIM_REGNUM, NULL); - if (regno == TBR_REGNUM || regno == -1) - supply_register (TBR_REGNUM, NULL); - if (regno == CPS_REGNUM || regno == -1) - supply_register (CPS_REGNUM, NULL); -} - -void -sparcnbsd_fill_reg32 (char *regs, int regno) -{ - int i; - - if (regno == PS_REGNUM || regno == -1) - regcache_collect (PS_REGNUM, regs + REG32_OFFSET_PSR); - - if (regno == PC_REGNUM || regno == -1) - regcache_collect (PC_REGNUM, regs + REG32_OFFSET_PC); - - if (regno == DEPRECATED_NPC_REGNUM || regno == -1) - regcache_collect (DEPRECATED_NPC_REGNUM, regs + REG32_OFFSET_NPC); - - if (regno == Y_REGNUM || regno == -1) - regcache_collect (Y_REGNUM, regs + REG32_OFFSET_Y); - - if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1) - { - /* %g0 is always zero */ - for (i = G1_REGNUM; i <= G7_REGNUM; i++) - { - if (regno == i || regno == -1) - regcache_collect (i, regs + REG32_OFFSET_GLOBAL + - ((i - G0_REGNUM) * 4)); - } - } - - if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1) - { - for (i = O0_REGNUM; i <= O7_REGNUM; i++) - { - if (regno == i || regno == -1) - regcache_collect (i, regs + REG32_OFFSET_OUT + - ((i - O0_REGNUM) * 4)); - } - } - - /* Responsibility for the stack regs is pushed off onto the caller. */ -} - -void -sparcnbsd_fill_reg64 (char *regs, int regno) -{ - int i; - - if (regno == TSTATE_REGNUM || regno == -1) - regcache_collect (TSTATE_REGNUM, regs + REG64_OFFSET_TSTATE); - - if (regno == PC_REGNUM || regno == -1) - regcache_collect (PC_REGNUM, regs + REG64_OFFSET_PC); - - if (regno == DEPRECATED_NPC_REGNUM || regno == -1) - regcache_collect (DEPRECATED_NPC_REGNUM, regs + REG64_OFFSET_NPC); - - if (regno == Y_REGNUM || regno == -1) - regcache_collect (Y_REGNUM, regs + REG64_OFFSET_Y); - - if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1) - { - /* %g0 is always zero */ - for (i = G1_REGNUM; i <= G7_REGNUM; i++) - { - if (regno == i || regno == -1) - regcache_collect (i, regs + REG64_OFFSET_GLOBAL + - ((i - G0_REGNUM) * 4)); - } - } - - if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1) - { - for (i = O0_REGNUM; i <= O7_REGNUM; i++) - { - if (regno == i || regno == -1) - regcache_collect (i, regs + REG64_OFFSET_OUT + - ((i - O0_REGNUM) * 4)); - } - } - - /* Responsibility for the stack regs is pushed off onto the caller. */ -} - -void -sparcnbsd_supply_fpreg32 (char *fpregs, int regno) -{ - int i; - - for (i = 0; i <= 31; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - supply_register (FP0_REGNUM + i, fpregs + (i * 4)); - } - - if (regno == FPS_REGNUM || regno == -1) - supply_register (FPS_REGNUM, fpregs + (32 * 4)); -} - -void -sparcnbsd_supply_fpreg64 (char *fpregs, int regno) -{ - int i; - - for (i = 0; i <= 31; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - supply_register (FP0_REGNUM + i, fpregs + (i * 4)); - } - - for (; i <= 47; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - supply_register (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8)); - } - - if (regno == FPS_REGNUM || regno == -1) - supply_register (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8)); - - /* XXX %gsr */ -} - -void -sparcnbsd_fill_fpreg32 (char *fpregs, int regno) -{ - int i; - - for (i = 0; i <= 31; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - regcache_collect (FP0_REGNUM + i, fpregs + (i * 4)); - } - - if (regno == FPS_REGNUM || regno == -1) - regcache_collect (FPS_REGNUM, fpregs + (32 * 4)); -} - -void -sparcnbsd_fill_fpreg64 (char *fpregs, int regno) -{ - int i; - - for (i = 0; i <= 31; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - regcache_collect (FP0_REGNUM + i, fpregs + (i * 4)); - } - - for (; i <= 47; i++) - { - if (regno == (FP0_REGNUM + i) || regno == -1) - regcache_collect (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8)); - } - - if (regno == FPS_REGNUM || regno == -1) - regcache_collect (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8)); + 0 * 4, /* %psr */ + 1 * 4, /* %pc */ + 2 * 4, /* %npc */ + 3 * 4, /* %y */ + -1, /* %wim */ + -1, /* %tbr */ + 5 * 4, /* %g1 */ + -1 /* %l0 */ +}; - /* XXX %gsr */ -} +/* Unlike other NetBSD implementations, the SPARC port historically + used .reg and .reg2 (see bfd/netbsd-core.c), and as such, we can + share one routine for a.out and ELF core files. */ -/* Unlike other NetBSD implementations, the SPARC port historically used - .reg and .reg2 (see bfd/netbsd-core.c), and as such, we can share one - routine for a.out and ELF core files. */ static void fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, CORE_ADDR ignore) { - int reg_size, fpreg_size; - - if (gdbarch_ptr_bit (current_gdbarch) == 32) - { - reg_size = (20 * 4); - fpreg_size = (33 * 4); - } - else - { - reg_size = (20 * 8); - fpreg_size = (64 * 4) - + 8 /* fsr */ - + 4 /* gsr */ - + 4; /* pad */ - } + int reg_size = 20 * 4; + int fpreg_size = 33 * 4; switch (which) { - case 0: /* Integer registers */ + case 0: /* Integer registers. */ if (core_reg_size != reg_size) warning ("Wrong size register set in core file."); - else if (gdbarch_ptr_bit (current_gdbarch) == 32) - sparcnbsd_supply_reg32 (core_reg_sect, -1); - else - sparcnbsd_supply_reg64 (core_reg_sect, -1); + sparc32_supply_gregset (&sparcnbsd_gregset, current_regcache, + -1, core_reg_sect); break; - case 2: /* Floating pointer registers */ + case 2: /* Floating pointer registers. */ if (core_reg_size != fpreg_size) warning ("Wrong size FP register set in core file."); - else if (gdbarch_ptr_bit (current_gdbarch) == 32) - sparcnbsd_supply_fpreg32 (core_reg_sect, -1); - else - sparcnbsd_supply_fpreg64 (core_reg_sect, -1); + sparc32_supply_fpregset (current_regcache, -1, core_reg_sect); break; default: @@ -434,81 +93,39 @@ static struct core_fns sparcnbsd_elfcore_fns = NULL }; -/* FIXME: Need PC_IN_SIGTRAMP() support, but NetBSD/sparc signal trampolines - aren't easily identified. */ - -static int -sparcnbsd_get_longjmp_target_32 (CORE_ADDR *pc) -{ - CORE_ADDR jb_addr; - char buf[4]; - - jb_addr = read_register (O0_REGNUM); - - if (target_read_memory (jb_addr + 12, buf, sizeof (buf))) - return 0; - - *pc = extract_unsigned_integer (buf, sizeof (buf)); - - return 1; -} - -static int -sparcnbsd_get_longjmp_target_64 (CORE_ADDR *pc) -{ - CORE_ADDR jb_addr; - char buf[8]; - - jb_addr = read_register (O0_REGNUM); - - if (target_read_memory (jb_addr + 16, buf, sizeof (buf))) - return 0; - - *pc = extract_unsigned_integer (buf, sizeof (buf)); - - return 1; -} +/* Return non-zero if we are in a shared library trampoline code stub. */ static int sparcnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name) { - if (strcmp (name, "_DYNAMIC") == 0) - return 1; - - return 0; + return (name && !strcmp (name, "_DYNAMIC")); } static void -sparcnbsd_init_abi_common (struct gdbarch_info info, - struct gdbarch *gdbarch) +sparcnbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { - set_gdbarch_get_longjmp_target (gdbarch, gdbarch_ptr_bit (gdbarch) == 32 ? - sparcnbsd_get_longjmp_target_32 : - sparcnbsd_get_longjmp_target_64); + /* NetBSD doesn't support the 128-bit `long double' from the psABI. */ + set_gdbarch_long_double_bit (gdbarch, 64); } static void -sparcnbsd_init_abi_aout (struct gdbarch_info info, - struct gdbarch *gdbarch) +sparcnbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { - sparcnbsd_init_abi_common (info, gdbarch); + sparcnbsd_init_abi (info, gdbarch); - set_gdbarch_in_solib_call_trampoline (gdbarch, - sparcnbsd_aout_in_solib_call_trampoline); + set_gdbarch_in_solib_call_trampoline + (gdbarch, sparcnbsd_aout_in_solib_call_trampoline); } static void -sparcnbsd_init_abi_elf (struct gdbarch_info info, - struct gdbarch *gdbarch) +sparcnbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { - sparcnbsd_init_abi_common (info, gdbarch); + sparcnbsd_init_abi (info, gdbarch); set_gdbarch_pc_in_sigtramp (gdbarch, nbsd_pc_in_sigtramp); - set_solib_svr4_fetch_link_map_offsets (gdbarch, - gdbarch_ptr_bit (gdbarch) == 32 ? - nbsd_ilp32_solib_svr4_fetch_link_map_offsets : - nbsd_lp64_solib_svr4_fetch_link_map_offsets); + set_solib_svr4_fetch_link_map_offsets + (gdbarch, nbsd_ilp32_solib_svr4_fetch_link_map_offsets); } static enum gdb_osabi @@ -520,6 +137,10 @@ sparcnbsd_aout_osabi_sniffer (bfd *abfd) return GDB_OSABI_UNKNOWN; } + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_sparcnbsd_tdep (void); + void _initialize_sparnbsd_tdep (void) { @@ -527,9 +148,9 @@ _initialize_sparnbsd_tdep (void) sparcnbsd_aout_osabi_sniffer); gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_AOUT, - sparcnbsd_init_abi_aout); + sparcnbsd_aout_init_abi); gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_ELF, - sparcnbsd_init_abi_elf); + sparcnbsd_elf_init_abi); add_core_fns (&sparcnbsd_core_fns); add_core_fns (&sparcnbsd_elfcore_fns); |