#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"
#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
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 */
+
projects / deliverable / binutils-gdb.git / blobdiff