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Diffstat (limited to 'gdb/findvar.c')
| -rw-r--r-- | gdb/findvar.c | 896 |
1 files changed, 0 insertions, 896 deletions
diff --git a/gdb/findvar.c b/gdb/findvar.c deleted file mode 100644 index c7b2a63d331..00000000000 --- a/gdb/findvar.c +++ /dev/null @@ -1,896 +0,0 @@ -/* Find a variable's value in memory, for GDB, the GNU debugger. - Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, - 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "frame.h" -#include "value.h" -#include "gdbcore.h" -#include "inferior.h" -#include "target.h" -#include "gdb_string.h" -#include "gdb_assert.h" -#include "floatformat.h" -#include "symfile.h" /* for overlay functions */ -#include "regcache.h" - -/* This is used to indicate that we don't know the format of the floating point - number. Typically, this is useful for native ports, where the actual format - is irrelevant, since no conversions will be taking place. */ - -const struct floatformat floatformat_unknown; - -/* Basic byte-swapping routines. GDB has needed these for a long time... - All extract a target-format integer at ADDR which is LEN bytes long. */ - -#if TARGET_CHAR_BIT != 8 || HOST_CHAR_BIT != 8 - /* 8 bit characters are a pretty safe assumption these days, so we - assume it throughout all these swapping routines. If we had to deal with - 9 bit characters, we would need to make len be in bits and would have - to re-write these routines... */ -you lose -#endif - -LONGEST -extract_signed_integer (void *addr, int len) -{ - LONGEST retval; - unsigned char *p; - unsigned char *startaddr = (unsigned char *) addr; - unsigned char *endaddr = startaddr + len; - - if (len > (int) sizeof (LONGEST)) - error ("\ -That operation is not available on integers of more than %d bytes.", - sizeof (LONGEST)); - - /* Start at the most significant end of the integer, and work towards - the least significant. */ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - p = startaddr; - /* Do the sign extension once at the start. */ - retval = ((LONGEST) * p ^ 0x80) - 0x80; - for (++p; p < endaddr; ++p) - retval = (retval << 8) | *p; - } - else - { - p = endaddr - 1; - /* Do the sign extension once at the start. */ - retval = ((LONGEST) * p ^ 0x80) - 0x80; - for (--p; p >= startaddr; --p) - retval = (retval << 8) | *p; - } - return retval; -} - -ULONGEST -extract_unsigned_integer (void *addr, int len) -{ - ULONGEST retval; - unsigned char *p; - unsigned char *startaddr = (unsigned char *) addr; - unsigned char *endaddr = startaddr + len; - - if (len > (int) sizeof (ULONGEST)) - error ("\ -That operation is not available on integers of more than %d bytes.", - sizeof (ULONGEST)); - - /* Start at the most significant end of the integer, and work towards - the least significant. */ - retval = 0; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = startaddr; p < endaddr; ++p) - retval = (retval << 8) | *p; - } - else - { - for (p = endaddr - 1; p >= startaddr; --p) - retval = (retval << 8) | *p; - } - return retval; -} - -/* Sometimes a long long unsigned integer can be extracted as a - LONGEST value. This is done so that we can print these values - better. If this integer can be converted to a LONGEST, this - function returns 1 and sets *PVAL. Otherwise it returns 0. */ - -int -extract_long_unsigned_integer (void *addr, int orig_len, LONGEST *pval) -{ - char *p, *first_addr; - int len; - - len = orig_len; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = (char *) addr; - len > (int) sizeof (LONGEST) && p < (char *) addr + orig_len; - p++) - { - if (*p == 0) - len--; - else - break; - } - first_addr = p; - } - else - { - first_addr = (char *) addr; - for (p = (char *) addr + orig_len - 1; - len > (int) sizeof (LONGEST) && p >= (char *) addr; - p--) - { - if (*p == 0) - len--; - else - break; - } - } - - if (len <= (int) sizeof (LONGEST)) - { - *pval = (LONGEST) extract_unsigned_integer (first_addr, - sizeof (LONGEST)); - return 1; - } - - return 0; -} - - -/* Treat the LEN bytes at ADDR as a target-format address, and return - that address. ADDR is a buffer in the GDB process, not in the - inferior. - - This function should only be used by target-specific code. It - assumes that a pointer has the same representation as that thing's - address represented as an integer. Some machines use word - addresses, or similarly munged things, for certain types of - pointers, so that assumption doesn't hold everywhere. - - Common code should use extract_typed_address instead, or something - else based on POINTER_TO_ADDRESS. */ - -CORE_ADDR -extract_address (void *addr, int len) -{ - /* Assume a CORE_ADDR can fit in a LONGEST (for now). Not sure - whether we want this to be true eventually. */ - return (CORE_ADDR) extract_unsigned_integer (addr, len); -} - - -/* Treat the bytes at BUF as a pointer of type TYPE, and return the - address it represents. */ -CORE_ADDR -extract_typed_address (void *buf, struct type *type) -{ - if (TYPE_CODE (type) != TYPE_CODE_PTR - && TYPE_CODE (type) != TYPE_CODE_REF) - internal_error (__FILE__, __LINE__, - "extract_typed_address: " - "type is not a pointer or reference"); - - return POINTER_TO_ADDRESS (type, buf); -} - - -void -store_signed_integer (void *addr, int len, LONGEST val) -{ - unsigned char *p; - unsigned char *startaddr = (unsigned char *) addr; - unsigned char *endaddr = startaddr + len; - - /* Start at the least significant end of the integer, and work towards - the most significant. */ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = endaddr - 1; p >= startaddr; --p) - { - *p = val & 0xff; - val >>= 8; - } - } - else - { - for (p = startaddr; p < endaddr; ++p) - { - *p = val & 0xff; - val >>= 8; - } - } -} - -void -store_unsigned_integer (void *addr, int len, ULONGEST val) -{ - unsigned char *p; - unsigned char *startaddr = (unsigned char *) addr; - unsigned char *endaddr = startaddr + len; - - /* Start at the least significant end of the integer, and work towards - the most significant. */ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = endaddr - 1; p >= startaddr; --p) - { - *p = val & 0xff; - val >>= 8; - } - } - else - { - for (p = startaddr; p < endaddr; ++p) - { - *p = val & 0xff; - val >>= 8; - } - } -} - -/* Store the address VAL as a LEN-byte value in target byte order at - ADDR. ADDR is a buffer in the GDB process, not in the inferior. - - This function should only be used by target-specific code. It - assumes that a pointer has the same representation as that thing's - address represented as an integer. Some machines use word - addresses, or similarly munged things, for certain types of - pointers, so that assumption doesn't hold everywhere. - - Common code should use store_typed_address instead, or something else - based on ADDRESS_TO_POINTER. */ -void -store_address (void *addr, int len, LONGEST val) -{ - store_unsigned_integer (addr, len, val); -} - - -/* Store the address ADDR as a pointer of type TYPE at BUF, in target - form. */ -void -store_typed_address (void *buf, struct type *type, CORE_ADDR addr) -{ - if (TYPE_CODE (type) != TYPE_CODE_PTR - && TYPE_CODE (type) != TYPE_CODE_REF) - internal_error (__FILE__, __LINE__, - "store_typed_address: " - "type is not a pointer or reference"); - - ADDRESS_TO_POINTER (type, buf, addr); -} - - - -/* Return a `value' with the contents of register REGNUM - in its virtual format, with the type specified by - REGISTER_VIRTUAL_TYPE. - - NOTE: returns NULL if register value is not available. - Caller will check return value or die! */ - -struct value * -value_of_register (int regnum) -{ - CORE_ADDR addr; - int optim; - struct value *reg_val; - char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - enum lval_type lval; - - get_saved_register (raw_buffer, &optim, &addr, - selected_frame, regnum, &lval); - - if (register_cached (regnum) < 0) - return NULL; /* register value not available */ - - reg_val = allocate_value (REGISTER_VIRTUAL_TYPE (regnum)); - - /* Convert raw data to virtual format if necessary. */ - - if (REGISTER_CONVERTIBLE (regnum)) - { - REGISTER_CONVERT_TO_VIRTUAL (regnum, REGISTER_VIRTUAL_TYPE (regnum), - raw_buffer, VALUE_CONTENTS_RAW (reg_val)); - } - else if (REGISTER_RAW_SIZE (regnum) == REGISTER_VIRTUAL_SIZE (regnum)) - memcpy (VALUE_CONTENTS_RAW (reg_val), raw_buffer, - REGISTER_RAW_SIZE (regnum)); - else - internal_error (__FILE__, __LINE__, - "Register \"%s\" (%d) has conflicting raw (%d) and virtual (%d) size", - REGISTER_NAME (regnum), - regnum, - REGISTER_RAW_SIZE (regnum), - REGISTER_VIRTUAL_SIZE (regnum)); - VALUE_LVAL (reg_val) = lval; - VALUE_ADDRESS (reg_val) = addr; - VALUE_REGNO (reg_val) = regnum; - VALUE_OPTIMIZED_OUT (reg_val) = optim; - return reg_val; -} - -/* Given a pointer of type TYPE in target form in BUF, return the - address it represents. */ -CORE_ADDR -unsigned_pointer_to_address (struct type *type, void *buf) -{ - return extract_address (buf, TYPE_LENGTH (type)); -} - -CORE_ADDR -signed_pointer_to_address (struct type *type, void *buf) -{ - return extract_signed_integer (buf, TYPE_LENGTH (type)); -} - -/* Given an address, store it as a pointer of type TYPE in target - format in BUF. */ -void -unsigned_address_to_pointer (struct type *type, void *buf, CORE_ADDR addr) -{ - store_address (buf, TYPE_LENGTH (type), addr); -} - -void -address_to_signed_pointer (struct type *type, void *buf, CORE_ADDR addr) -{ - store_signed_integer (buf, TYPE_LENGTH (type), addr); -} - -/* Will calling read_var_value or locate_var_value on SYM end - up caring what frame it is being evaluated relative to? SYM must - be non-NULL. */ -int -symbol_read_needs_frame (struct symbol *sym) -{ - switch (SYMBOL_CLASS (sym)) - { - /* All cases listed explicitly so that gcc -Wall will detect it if - we failed to consider one. */ - case LOC_REGISTER: - case LOC_ARG: - case LOC_REF_ARG: - case LOC_REGPARM: - case LOC_REGPARM_ADDR: - case LOC_LOCAL: - case LOC_LOCAL_ARG: - case LOC_BASEREG: - case LOC_BASEREG_ARG: - case LOC_THREAD_LOCAL_STATIC: - return 1; - - case LOC_UNDEF: - case LOC_CONST: - case LOC_STATIC: - case LOC_INDIRECT: - case LOC_TYPEDEF: - - case LOC_LABEL: - /* Getting the address of a label can be done independently of the block, - even if some *uses* of that address wouldn't work so well without - the right frame. */ - - case LOC_BLOCK: - case LOC_CONST_BYTES: - case LOC_UNRESOLVED: - case LOC_OPTIMIZED_OUT: - return 0; - } - return 1; -} - -/* Given a struct symbol for a variable, - and a stack frame id, read the value of the variable - and return a (pointer to a) struct value containing the value. - If the variable cannot be found, return a zero pointer. - If FRAME is NULL, use the selected_frame. */ - -struct value * -read_var_value (register struct symbol *var, struct frame_info *frame) -{ - register struct value *v; - struct type *type = SYMBOL_TYPE (var); - CORE_ADDR addr; - register int len; - - v = allocate_value (type); - VALUE_LVAL (v) = lval_memory; /* The most likely possibility. */ - VALUE_BFD_SECTION (v) = SYMBOL_BFD_SECTION (var); - - len = TYPE_LENGTH (type); - - if (frame == NULL) - frame = selected_frame; - - switch (SYMBOL_CLASS (var)) - { - case LOC_CONST: - /* Put the constant back in target format. */ - store_signed_integer (VALUE_CONTENTS_RAW (v), len, - (LONGEST) SYMBOL_VALUE (var)); - VALUE_LVAL (v) = not_lval; - return v; - - case LOC_LABEL: - /* Put the constant back in target format. */ - if (overlay_debugging) - { - CORE_ADDR addr - = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var), - SYMBOL_BFD_SECTION (var)); - store_typed_address (VALUE_CONTENTS_RAW (v), type, addr); - } - else - store_typed_address (VALUE_CONTENTS_RAW (v), type, - SYMBOL_VALUE_ADDRESS (var)); - VALUE_LVAL (v) = not_lval; - return v; - - case LOC_CONST_BYTES: - { - char *bytes_addr; - bytes_addr = SYMBOL_VALUE_BYTES (var); - memcpy (VALUE_CONTENTS_RAW (v), bytes_addr, len); - VALUE_LVAL (v) = not_lval; - return v; - } - - case LOC_STATIC: - if (overlay_debugging) - addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var), - SYMBOL_BFD_SECTION (var)); - else - addr = SYMBOL_VALUE_ADDRESS (var); - break; - - case LOC_INDIRECT: - { - /* The import slot does not have a real address in it from the - dynamic loader (dld.sl on HP-UX), if the target hasn't - begun execution yet, so check for that. */ - CORE_ADDR locaddr; - struct value *loc; - if (!target_has_execution) - error ("\ -Attempt to access variable defined in different shared object or load module when\n\ -addresses have not been bound by the dynamic loader. Try again when executable is running."); - - locaddr = SYMBOL_VALUE_ADDRESS (var); - loc = value_at (lookup_pointer_type (type), locaddr, NULL); - addr = value_as_address (loc); - } - - case LOC_ARG: - if (frame == NULL) - return 0; - addr = FRAME_ARGS_ADDRESS (frame); - if (!addr) - return 0; - addr += SYMBOL_VALUE (var); - break; - - case LOC_REF_ARG: - { - struct value *ref; - CORE_ADDR argref; - if (frame == NULL) - return 0; - argref = FRAME_ARGS_ADDRESS (frame); - if (!argref) - return 0; - argref += SYMBOL_VALUE (var); - ref = value_at (lookup_pointer_type (type), argref, NULL); - addr = value_as_address (ref); - break; - } - - case LOC_LOCAL: - case LOC_LOCAL_ARG: - if (frame == NULL) - return 0; - addr = FRAME_LOCALS_ADDRESS (frame); - addr += SYMBOL_VALUE (var); - break; - - case LOC_BASEREG: - case LOC_BASEREG_ARG: - case LOC_THREAD_LOCAL_STATIC: - { - struct value *regval; - - regval = value_from_register (lookup_pointer_type (type), - SYMBOL_BASEREG (var), frame); - if (regval == NULL) - error ("Value of base register not available."); - addr = value_as_address (regval); - addr += SYMBOL_VALUE (var); - break; - } - - case LOC_TYPEDEF: - error ("Cannot look up value of a typedef"); - break; - - case LOC_BLOCK: - if (overlay_debugging) - VALUE_ADDRESS (v) = symbol_overlayed_address - (BLOCK_START (SYMBOL_BLOCK_VALUE (var)), SYMBOL_BFD_SECTION (var)); - else - VALUE_ADDRESS (v) = BLOCK_START (SYMBOL_BLOCK_VALUE (var)); - return v; - - case LOC_REGISTER: - case LOC_REGPARM: - case LOC_REGPARM_ADDR: - { - struct block *b; - int regno = SYMBOL_VALUE (var); - struct value *regval; - - if (frame == NULL) - return 0; - b = get_frame_block (frame); - - if (SYMBOL_CLASS (var) == LOC_REGPARM_ADDR) - { - regval = value_from_register (lookup_pointer_type (type), - regno, - frame); - - if (regval == NULL) - error ("Value of register variable not available."); - - addr = value_as_address (regval); - VALUE_LVAL (v) = lval_memory; - } - else - { - regval = value_from_register (type, regno, frame); - - if (regval == NULL) - error ("Value of register variable not available."); - return regval; - } - } - break; - - case LOC_UNRESOLVED: - { - struct minimal_symbol *msym; - - msym = lookup_minimal_symbol (SYMBOL_NAME (var), NULL, NULL); - if (msym == NULL) - return 0; - if (overlay_debugging) - addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (msym), - SYMBOL_BFD_SECTION (msym)); - else - addr = SYMBOL_VALUE_ADDRESS (msym); - } - break; - - case LOC_OPTIMIZED_OUT: - VALUE_LVAL (v) = not_lval; - VALUE_OPTIMIZED_OUT (v) = 1; - return v; - - default: - error ("Cannot look up value of a botched symbol."); - break; - } - - VALUE_ADDRESS (v) = addr; - VALUE_LAZY (v) = 1; - return v; -} - -/* Return a value of type TYPE, stored in register REGNUM, in frame - FRAME. - - NOTE: returns NULL if register value is not available. - Caller will check return value or die! */ - -struct value * -value_from_register (struct type *type, int regnum, struct frame_info *frame) -{ - char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - CORE_ADDR addr; - int optim; - struct value *v = allocate_value (type); - char *value_bytes = 0; - int value_bytes_copied = 0; - int num_storage_locs; - enum lval_type lval; - int len; - - CHECK_TYPEDEF (type); - len = TYPE_LENGTH (type); - - VALUE_REGNO (v) = regnum; - - num_storage_locs = (len > REGISTER_VIRTUAL_SIZE (regnum) ? - ((len - 1) / REGISTER_RAW_SIZE (regnum)) + 1 : - 1); - - if (num_storage_locs > 1 -#ifdef GDB_TARGET_IS_H8500 - || TYPE_CODE (type) == TYPE_CODE_PTR -#endif - ) - { - /* Value spread across multiple storage locations. */ - - int local_regnum; - int mem_stor = 0, reg_stor = 0; - int mem_tracking = 1; - CORE_ADDR last_addr = 0; - CORE_ADDR first_addr = 0; - - value_bytes = (char *) alloca (len + MAX_REGISTER_RAW_SIZE); - - /* Copy all of the data out, whereever it may be. */ - -#ifdef GDB_TARGET_IS_H8500 -/* This piece of hideosity is required because the H8500 treats registers - differently depending upon whether they are used as pointers or not. As a - pointer, a register needs to have a page register tacked onto the front. - An alternate way to do this would be to have gcc output different register - numbers for the pointer & non-pointer form of the register. But, it - doesn't, so we're stuck with this. */ - - if (TYPE_CODE (type) == TYPE_CODE_PTR - && len > 2) - { - int page_regnum; - - switch (regnum) - { - case R0_REGNUM: - case R1_REGNUM: - case R2_REGNUM: - case R3_REGNUM: - page_regnum = SEG_D_REGNUM; - break; - case R4_REGNUM: - case R5_REGNUM: - page_regnum = SEG_E_REGNUM; - break; - case R6_REGNUM: - case R7_REGNUM: - page_regnum = SEG_T_REGNUM; - break; - } - - value_bytes[0] = 0; - get_saved_register (value_bytes + 1, - &optim, - &addr, - frame, - page_regnum, - &lval); - - if (register_cached (page_regnum) == -1) - return NULL; /* register value not available */ - - if (lval == lval_register) - reg_stor++; - else - mem_stor++; - first_addr = addr; - last_addr = addr; - - get_saved_register (value_bytes + 2, - &optim, - &addr, - frame, - regnum, - &lval); - - if (register_cached (regnum) == -1) - return NULL; /* register value not available */ - - if (lval == lval_register) - reg_stor++; - else - { - mem_stor++; - mem_tracking = mem_tracking && (addr == last_addr); - } - last_addr = addr; - } - else -#endif /* GDB_TARGET_IS_H8500 */ - for (local_regnum = regnum; - value_bytes_copied < len; - (value_bytes_copied += REGISTER_RAW_SIZE (local_regnum), - ++local_regnum)) - { - get_saved_register (value_bytes + value_bytes_copied, - &optim, - &addr, - frame, - local_regnum, - &lval); - - if (register_cached (local_regnum) == -1) - return NULL; /* register value not available */ - - if (regnum == local_regnum) - first_addr = addr; - if (lval == lval_register) - reg_stor++; - else - { - mem_stor++; - - mem_tracking = - (mem_tracking - && (regnum == local_regnum - || addr == last_addr)); - } - last_addr = addr; - } - - if ((reg_stor && mem_stor) - || (mem_stor && !mem_tracking)) - /* Mixed storage; all of the hassle we just went through was - for some good purpose. */ - { - VALUE_LVAL (v) = lval_reg_frame_relative; - VALUE_FRAME (v) = FRAME_FP (frame); - VALUE_FRAME_REGNUM (v) = regnum; - } - else if (mem_stor) - { - VALUE_LVAL (v) = lval_memory; - VALUE_ADDRESS (v) = first_addr; - } - else if (reg_stor) - { - VALUE_LVAL (v) = lval_register; - VALUE_ADDRESS (v) = first_addr; - } - else - internal_error (__FILE__, __LINE__, - "value_from_register: Value not stored anywhere!"); - - VALUE_OPTIMIZED_OUT (v) = optim; - - /* Any structure stored in more than one register will always be - an integral number of registers. Otherwise, you'd need to do - some fiddling with the last register copied here for little - endian machines. */ - - /* Copy into the contents section of the value. */ - memcpy (VALUE_CONTENTS_RAW (v), value_bytes, len); - - /* Finally do any conversion necessary when extracting this - type from more than one register. */ -#ifdef REGISTER_CONVERT_TO_TYPE - REGISTER_CONVERT_TO_TYPE (regnum, type, VALUE_CONTENTS_RAW (v)); -#endif - return v; - } - - /* Data is completely contained within a single register. Locate the - register's contents in a real register or in core; - read the data in raw format. */ - - get_saved_register (raw_buffer, &optim, &addr, frame, regnum, &lval); - - if (register_cached (regnum) == -1) - return NULL; /* register value not available */ - - VALUE_OPTIMIZED_OUT (v) = optim; - VALUE_LVAL (v) = lval; - VALUE_ADDRESS (v) = addr; - - /* Convert raw data to virtual format if necessary. */ - - if (REGISTER_CONVERTIBLE (regnum)) - { - REGISTER_CONVERT_TO_VIRTUAL (regnum, type, - raw_buffer, VALUE_CONTENTS_RAW (v)); - } - else - { - /* Raw and virtual formats are the same for this register. */ - - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG && len < REGISTER_RAW_SIZE (regnum)) - { - /* Big-endian, and we want less than full size. */ - VALUE_OFFSET (v) = REGISTER_RAW_SIZE (regnum) - len; - } - - memcpy (VALUE_CONTENTS_RAW (v), raw_buffer + VALUE_OFFSET (v), len); - } - - return v; -} - -/* Given a struct symbol for a variable or function, - and a stack frame id, - return a (pointer to a) struct value containing the properly typed - address. */ - -struct value * -locate_var_value (register struct symbol *var, struct frame_info *frame) -{ - CORE_ADDR addr = 0; - struct type *type = SYMBOL_TYPE (var); - struct value *lazy_value; - - /* Evaluate it first; if the result is a memory address, we're fine. - Lazy evaluation pays off here. */ - - lazy_value = read_var_value (var, frame); - if (lazy_value == 0) - error ("Address of \"%s\" is unknown.", SYMBOL_SOURCE_NAME (var)); - - if (VALUE_LAZY (lazy_value) - || TYPE_CODE (type) == TYPE_CODE_FUNC) - { - struct value *val; - - addr = VALUE_ADDRESS (lazy_value); - val = value_from_pointer (lookup_pointer_type (type), addr); - VALUE_BFD_SECTION (val) = VALUE_BFD_SECTION (lazy_value); - return val; - } - - /* Not a memory address; check what the problem was. */ - switch (VALUE_LVAL (lazy_value)) - { - case lval_register: - gdb_assert (REGISTER_NAME (VALUE_REGNO (lazy_value)) != NULL - && *REGISTER_NAME (VALUE_REGNO (lazy_value)) != '\0'); - error("Address requested for identifier " - "\"%s\" which is in register $%s", - SYMBOL_SOURCE_NAME (var), - REGISTER_NAME (VALUE_REGNO (lazy_value))); - break; - - case lval_reg_frame_relative: - gdb_assert (REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)) != NULL - && *REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)) != '\0'); - error("Address requested for identifier " - "\"%s\" which is in frame register $%s", - SYMBOL_SOURCE_NAME (var), - REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value))); - break; - - default: - error ("Can't take address of \"%s\" which isn't an lvalue.", - SYMBOL_SOURCE_NAME (var)); - break; - } - return 0; /* For lint -- never reached */ -} |