diff options
Diffstat (limited to 'gdb/config/i386/tm-linux.h')
| -rw-r--r-- | gdb/config/i386/tm-linux.h | 215 |
1 files changed, 213 insertions, 2 deletions
diff --git a/gdb/config/i386/tm-linux.h b/gdb/config/i386/tm-linux.h index 0767bd9..e4f70a2 100644 --- a/gdb/config/i386/tm-linux.h +++ b/gdb/config/i386/tm-linux.h @@ -21,8 +21,7 @@ #ifndef TM_LINUX_H #define TM_LINUX_H -/* FIXME: If nothing else gets added to this file, it could be removed - and configure could just use tm-i386.h instead. -fnf */ +#define I386_GNULINUX_TARGET #include "i386/tm-i386.h" @@ -39,9 +38,196 @@ #include "tm-sysv4.h" +/* copy of tm-cygwin32.h */ +#undef REGISTER_RAW_SIZE +#undef REGISTER_VIRTUAL_SIZE +#undef REGISTER_VIRTUAL_TYPE +#undef REGISTER_NAMES +#undef REGISTER_BYTES +#undef REGISTER_BYTE +#undef MAX_REGISTER_VIRTUAL_SIZE +#undef NUM_REGS +#undef NUM_FREGS + +/* Number of machine registers */ + +#define NUM_REGS 31 +#define NUM_FREGS 15 + +/* Initializer for an array of names of registers. + There should be NUM_REGS strings in this initializer. */ + +/* the order of the first 8 registers must match the compiler's + * numbering scheme (which is the same as the 386 scheme) + * also, this table must match regmap in i386-pinsn.c. + */ + +#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ + "esp", "ebp", "esi", "edi", \ + "eip", "eflags","cs", "ss", \ + "ds", "es", "fs", "gs", \ + "cwd", "swd", "twd", "fip", \ + "fcs", "fopo", "fos", \ + "st", "st1", "st2", "st3", \ + "st4", "st5", "st6", "st7",} + +#define LOW_RETURN_REGNUM 0 /* holds low four bytes of result */ +#define HIGH_RETURN_REGNUM 2 /* holds high four bytes of result */ + +#define FPSTART_REGNUM 16 /* start of FPU registers */ +#define FPCONTROL_REGNUM 16 /* FPU control register */ +#define FPSTATUS_REGNUM 17 /* FPU status register */ +#define FPTAG_REGNUM 18 /* FPU tag register */ +#define FPDATA_REGNUM 23 /* actual floating-point values */ +#define FPEND_REGNUM (FPSTART_REGNUM + 14) /* last FPU register */ + +#define FPENV_BYTES (7 * 4) + +#define FPREG_RAW_SIZE (10) + +/* Total amount of space needed to store our copies of the machine's + FPU state. */ + +#define FPREG_BYTES (FPENV_BYTES + 8 * FPREG_RAW_SIZE) + +/* Total amount of space needed to store our copies of the machine's + register state, the array `registers'. */ + +#define REGISTER_BYTES (FPSTART_REGNUM * 4 + FPREG_BYTES) + +/* Index within `registers' of the first byte of the space for + register N. */ + +#define REGISTER_BYTE(N) (((N) < FPDATA_REGNUM) ? \ + (N) * 4 : \ + (((N) - FPDATA_REGNUM) * FPREG_RAW_SIZE) \ + + (FPDATA_REGNUM * 4)) + +/* Number of bytes of storage in the actual machine representation + for register N. */ + +#define REGISTER_RAW_SIZE(N) (((N) < FPDATA_REGNUM) ? 4 : FPREG_RAW_SIZE) + +/* Number of bytes of storage in the program's representation + for register N. */ + +#define REGISTER_VIRTUAL_SIZE(N) (((N) < FPDATA_REGNUM) ? 4 : FPREG_RAW_SIZE) + +/* Largest value REGISTER_RAW_SIZE can have. */ + +#undef MAX_REGISTER_RAW_SIZE +#define MAX_REGISTER_RAW_SIZE FPREG_RAW_SIZE + +/* Largest value REGISTER_VIRTUAL_SIZE can have. */ + +#define MAX_REGISTER_VIRTUAL_SIZE FPREG_RAW_SIZE + +#if defined(HAVE_LONG_DOUBLE) && defined(HOST_I386) +/* The host and target are i386 machines and the compiler supports + long doubles. Long doubles on the host therefore have the same + layout as a 387 FPU stack register. */ +#define LD_I387 +#endif + +#define TARGET_LONG_DOUBLE_BIT 80 + +#ifdef LD_I387 +extern int i387_extract_floating (PTR addr, int len, long double *dretptr); +extern int i387_store_floating (PTR addr, int len, long double val); + +#define TARGET_EXTRACT_FLOATING i387_extract_floating +#define TARGET_STORE_FLOATING i387_store_floating + +#define TARGET_ANALYZE_FLOATING \ + do \ + { \ + unsigned expon; \ + \ + low = extract_unsigned_integer (valaddr, 4); \ + high = extract_unsigned_integer (valaddr + 4, 4); \ + expon = extract_unsigned_integer (valaddr + 8, 2); \ + \ + nonnegative = ((expon & 0x8000) == 0); \ + is_nan = ((expon & 0x7fff) == 0x7fff) \ + && ((high & 0x80000000) == 0x80000000) \ + && (((high & 0x7fffffff) | low) != 0); \ + } \ + while (0) +#endif + +#ifndef LD_I387 +/* Nonzero if register N requires conversion + from raw format to virtual format. */ +#define REGISTER_CONVERTIBLE(N) \ + ((N < FPDATA_REGNUM) ? 0 : 1) +#endif + +#ifdef LD_I387 +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ +{ \ + long double val = *((long double *)FROM); \ + store_floating ((TO), TYPE_LENGTH (TYPE), val); \ +} +#else +/* Convert data from raw format for register REGNUM in buffer FROM + to virtual format with type TYPE in buffer TO. */ +extern void +i387_to_double PARAMS ((char *, char *)); + +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ +{ \ + double val; \ + i387_to_double ((FROM), (char *)&val); \ + store_floating ((TO), TYPE_LENGTH (TYPE), val); \ +} +#endif + +#ifdef LD_I387 +#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ +{ \ + long double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ + *((long double *)TO) = val; \ +} +#else +extern void +double_to_i387 PARAMS ((char *, char *)); + +#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ +{ \ + double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ + double_to_i387((char *)&val, (TO)); \ +} +#endif + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#ifdef LD_I387 +#define REGISTER_VIRTUAL_TYPE(N) \ + ((N < FPDATA_REGNUM) ? builtin_type_int : \ + builtin_type_long_double) +#else +#define REGISTER_VIRTUAL_TYPE(N) \ + ((N < FPDATA_REGNUM) ? builtin_type_int : \ + builtin_type_double) +#endif + +/* end of copy */ + +extern void i387_float_info(void); +#define FLOAT_INFO { i387_float_info (); } + /* The following works around a problem with /usr/include/sys/procfs.h */ #define sys_quotactl 1 +/* Define DO_REGISTERS_INFO() to do machine-specific formatting + of register dumps. */ + +#define DO_REGISTERS_INFO(_regnum, fp) i386_do_registers_info(_regnum, fp) +extern void i386_do_registers_info PARAMS ((int, int)); + +extern void i387_print_register PARAMS ((char *, int)); + /* When the i386 Linux kernel calls a signal handler, the return address points to a bit of code on the stack. These definitions are used to identify this bit of code as a signal trampoline in @@ -104,4 +290,29 @@ extern CORE_ADDR i386_linux_sigtramp_saved_pc PARAMS ((struct frame_info *)); extern CORE_ADDR i386_linux_sigtramp_saved_sp PARAMS ((struct frame_info *)); +/* Some versions of Linux have real-time signal support in the C library, and + some don't. We have to include this file to find out. */ +#include <signal.h> + +#ifdef __SIGRTMIN +#define REALTIME_LO __SIGRTMIN +#define REALTIME_HI (__SIGRTMAX + 1) +#else +#define REALTIME_LO 32 +#define REALTIME_HI 64 +#endif + +/* When we call a function in a shared library, and the PLT sends us + into the dynamic linker to find the function's real address, we + need to skip over the dynamic linker call. This function decides + when to skip, and where to skip to. See the comments for + SKIP_SOLIB_RESOLVER at the top of infrun.c. */ +#define SKIP_SOLIB_RESOLVER i386_linux_skip_solib_resolver +extern CORE_ADDR i386_linux_skip_solib_resolver (CORE_ADDR pc); + +/* N_FUN symbols in shared libaries have 0 for their values and need + to be relocated. */ +#define SOFUN_ADDRESS_MAYBE_MISSING + #endif /* #ifndef TM_LINUX_H */ + |