X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Famd64fbsd-nat.c;h=ed2d39bb742f4650f89ab720a01ed26ffdd95eab;hb=de5227fb84e6f049212c317be32343ff86c29611;hp=e90d8fac061fae470ba58b8a67f83e7bc56ddac0;hpb=0485f6ad303a1c0cbc03d83af4fa380987c0fc38;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c index e90d8fac06..ed2d39bb74 100644 --- a/gdb/amd64fbsd-nat.c +++ b/gdb/amd64fbsd-nat.c @@ -1,4 +1,5 @@ /* Native-dependent code for FreeBSD/amd64. + Copyright 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -44,13 +45,14 @@ typedef struct fpreg fpregset_t; #include "gregset.h" #include "x86-64-tdep.h" +#include "amd64-nat.h" /* Offset to the gregset_t location where REG is stored. */ #define REG_OFFSET(reg) offsetof (gregset_t, reg) -/* At reg_offset[REGNO] you'll find the offset to the gregset_t - location where the GDB register REGNO is stored. Unsupported +/* At reg_offset[REGNUM] you'll find the offset to the gregset_t + location where the GDB register REGNUM is stored. Unsupported registers are marked with `-1'. */ static int reg_offset[] = { @@ -77,12 +79,27 @@ static int reg_offset[] = -1, -1 }; + + +/* Mapping between the general-purpose registers in FreeBSD/amd64 + `struct reg' format and GDB's register cache layout for + FreeBSD/i386. -#define REG_ADDR(regset, regno) ((char *) (regset) + reg_offset[regno]) + Note that most FreeBSD/amd64 registers are 64-bit, while the + FreeBSD/i386 registers are all 32-bit, but since we're + little-endian we get away with that. */ -/* Macro to determine if a register is fetched with PT_GETREGS. */ -#define GETREGS_SUPPLIES(regno) \ - ((0 <= (regno) && (regno) < X86_64_NUM_GREGS)) +/* From . */ +static int amd64fbsd32_r_reg_offset[I386_NUM_GREGS] = +{ + 14 * 8, 13 * 8, /* %eax, %ecx */ + 12 * 8, 11 * 8, /* %edx, %ebx */ + 20 * 8, 10 * 8, /* %esp, %ebp */ + 9 * 8, 8 * 8, /* %esi, %edi */ + 17 * 8, 19 * 8, /* %eip, %eflags */ + 18 * 8, 21 * 8, /* %cs, %ss */ + -1, -1, -1, -1 /* %ds, %es, %fs, %gs */ +}; /* Transfering the registers between GDB, inferiors and core files. */ @@ -93,29 +110,17 @@ static int reg_offset[] = void supply_gregset (gregset_t *gregsetp) { - int i; - - for (i = 0; i < X86_64_NUM_GREGS; i++) - { - if (reg_offset[i] == -1) - supply_register (i, NULL); - else - supply_register (i, REG_ADDR (gregsetp, i)); - } + amd64_supply_native_gregset (current_regcache, gregsetp, -1); } -/* Fill register REGNO (if it is a general-purpose register) in - *GREGSETPS with the value in GDB's register array. If REGNO is -1, +/* Fill register REGNUM (if it is a general-purpose register) in + *GREGSETPS with the value in GDB's register array. If REGNUM is -1, do this for all registers. */ void -fill_gregset (gregset_t *gregsetp, int regno) +fill_gregset (gregset_t *gregsetp, int regnum) { - int i; - - for (i = 0; i < X86_64_NUM_GREGS; i++) - if ((regno == -1 || regno == i) && reg_offset[i] != -1) - regcache_collect (i, REG_ADDR (gregsetp, i)); + amd64_collect_native_gregset (current_regcache, gregsetp, regnum); } /* Fill GDB's register array with the floating-point register values @@ -127,80 +132,80 @@ supply_fpregset (fpregset_t *fpregsetp) x86_64_supply_fxsave ((const char *) fpregsetp, -1); } -/* Fill register REGNO (if it is a floating-point register) in - *FPREGSETP with the value in GDB's register array. If REGNO is -1, +/* Fill register REGNUM (if it is a floating-point register) in + *FPREGSETP with the value in GDB's register array. If REGNUM is -1, do this for all registers. */ void -fill_fpregset (fpregset_t *fpregsetp, int regno) +fill_fpregset (fpregset_t *fpregsetp, int regnum) { - x86_64_fill_fxsave ((char *) fpregsetp, regno); + x86_64_fill_fxsave ((char *) fpregsetp, regnum); } -/* Fetch register REGNO from the inferior. If REGNO is -1, do this +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers (including the floating point registers). */ void -fetch_inferior_registers (int regno) +fetch_inferior_registers (int regnum) { - if (regno == -1 || GETREGS_SUPPLIES (regno)) + if (regnum == -1 || amd64_native_gregset_supplies_p (regnum)) { - gregset_t gregs; + struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &gregs, 0) == -1) + (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't get registers"); - supply_gregset (&gregs); - if (regno != -1) + amd64_supply_native_gregset (current_regcache, ®s, -1); + if (regnum != -1) return; } - if (regno == -1 || regno >= FP0_REGNUM) + if (regnum == -1 || regnum >= FP0_REGNUM) { - fpregset_t fpregs; + struct fpreg fpregs; if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) perror_with_name ("Couldn't get floating point status"); - supply_fpregset (&fpregs); + x86_64_supply_fxsave ((const char *) &fpregs, -1); } } -/* Store register REGNO back into the inferior. If REGNO is -1, do +/* Store register REGNUM back into the inferior. If REGNUM is -1, do this for all registers (including the floating point registers). */ void -store_inferior_registers (int regno) +store_inferior_registers (int regnum) { - if (regno == -1 || GETREGS_SUPPLIES (regno)) + if (regnum == -1 || amd64_native_gregset_supplies_p (regnum)) { - gregset_t gregs; + struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &gregs, 0) == -1) + (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't get registers"); - fill_gregset (&gregs, regno); + amd64_collect_native_gregset (current_regcache, ®s, regnum); if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &gregs, 0) == -1) + (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't write registers"); - if (regno != -1) + if (regnum != -1) return; } - if (regno == -1 || regno >= FP0_REGNUM) + if (regnum == -1 || regnum >= FP0_REGNUM) { - fpregset_t fpregs; + struct fpreg fpregs; if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) perror_with_name ("Couldn't get floating point status"); - fill_fpregset (&fpregs, regno); + x86_64_fill_fxsave ((char *) &fpregs, regnum); if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) @@ -213,10 +218,13 @@ store_inferior_registers (int regno) void _initialize_amd64fbsd_nat (void); void -_initialize_am64fbsd_nat (void) +_initialize_amd64fbsd_nat (void) { int offset; + amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset; + amd64_native_gregset64_reg_offset = reg_offset; + /* To support the recognition of signal handlers, i386bsd-tdep.c hardcodes some constants. Inclusion of this file means that we are compiling a native debugger, which means that we can use the @@ -281,7 +289,7 @@ Please report this to .", environment can be found. */ { int mib[2]; - int ps_strings; + long ps_strings; size_t len; mib[0] = CTL_KERN;