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author | Andrew Cagney <cagney@redhat.com> | 2001-02-20 22:39:03 +0000 |
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committer | Andrew Cagney <cagney@redhat.com> | 2001-02-20 22:39:03 +0000 |
commit | 5a1279e9aaa6872cc00577598fc53839e9269bd2 (patch) | |
tree | d75e31fab978087fa8ef41d4b95c9ba3930aa412 /gdb/regcache.c | |
parent | c9e32c1a7f7a4a727799abf210ecdc48792c6fbc (diff) | |
download | gdb-5a1279e9aaa6872cc00577598fc53839e9269bd2.tar.gz |
Move frame specific register code to the new file frame.c.
Diffstat (limited to 'gdb/regcache.c')
-rw-r--r-- | gdb/regcache.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/gdb/regcache.c b/gdb/regcache.c index de6936b18de..953892c73f8 100644 --- a/gdb/regcache.c +++ b/gdb/regcache.c @@ -137,205 +137,6 @@ store_register (int regnum) STORE_PSEUDO_REGISTER (regnum); } -/* FIND_SAVED_REGISTER () - - Return the address in which frame FRAME's value of register REGNUM - has been saved in memory. Or return zero if it has not been saved. - If REGNUM specifies the SP, the value we return is actually - the SP value, not an address where it was saved. */ - -CORE_ADDR -find_saved_register (struct frame_info *frame, int regnum) -{ - register struct frame_info *frame1 = NULL; - register CORE_ADDR addr = 0; - - if (frame == NULL) /* No regs saved if want current frame */ - return 0; - -#ifdef HAVE_REGISTER_WINDOWS - /* We assume that a register in a register window will only be saved - in one place (since the name changes and/or disappears as you go - towards inner frames), so we only call get_frame_saved_regs on - the current frame. This is directly in contradiction to the - usage below, which assumes that registers used in a frame must be - saved in a lower (more interior) frame. This change is a result - of working on a register window machine; get_frame_saved_regs - always returns the registers saved within a frame, within the - context (register namespace) of that frame. */ - - /* However, note that we don't want this to return anything if - nothing is saved (if there's a frame inside of this one). Also, - callers to this routine asking for the stack pointer want the - stack pointer saved for *this* frame; this is returned from the - next frame. */ - - if (REGISTER_IN_WINDOW_P (regnum)) - { - frame1 = get_next_frame (frame); - if (!frame1) - return 0; /* Registers of this frame are active. */ - - /* Get the SP from the next frame in; it will be this - current frame. */ - if (regnum != SP_REGNUM) - frame1 = frame; - - FRAME_INIT_SAVED_REGS (frame1); - return frame1->saved_regs[regnum]; /* ... which might be zero */ - } -#endif /* HAVE_REGISTER_WINDOWS */ - - /* Note that this next routine assumes that registers used in - frame x will be saved only in the frame that x calls and - frames interior to it. This is not true on the sparc, but the - above macro takes care of it, so we should be all right. */ - while (1) - { - QUIT; - frame1 = get_prev_frame (frame1); - if (frame1 == 0 || frame1 == frame) - break; - FRAME_INIT_SAVED_REGS (frame1); - if (frame1->saved_regs[regnum]) - addr = frame1->saved_regs[regnum]; - } - - return addr; -} - -/* DEFAULT_GET_SAVED_REGISTER () - - Find register number REGNUM relative to FRAME and put its (raw, - target format) contents in *RAW_BUFFER. Set *OPTIMIZED if the - variable was optimized out (and thus can't be fetched). Set *LVAL - to lval_memory, lval_register, or not_lval, depending on whether - the value was fetched from memory, from a register, or in a strange - and non-modifiable way (e.g. a frame pointer which was calculated - rather than fetched). Set *ADDRP to the address, either in memory - on as a REGISTER_BYTE offset into the registers array. - - Note that this implementation never sets *LVAL to not_lval. But - it can be replaced by defining GET_SAVED_REGISTER and supplying - your own. - - The argument RAW_BUFFER must point to aligned memory. */ - -static void -default_get_saved_register (char *raw_buffer, - int *optimized, - CORE_ADDR *addrp, - struct frame_info *frame, - int regnum, - enum lval_type *lval) -{ - CORE_ADDR addr; - - if (!target_has_registers) - error ("No registers."); - - /* Normal systems don't optimize out things with register numbers. */ - if (optimized != NULL) - *optimized = 0; - addr = find_saved_register (frame, regnum); - if (addr != 0) - { - if (lval != NULL) - *lval = lval_memory; - if (regnum == SP_REGNUM) - { - if (raw_buffer != NULL) - { - /* Put it back in target format. */ - store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), - (LONGEST) addr); - } - if (addrp != NULL) - *addrp = 0; - return; - } - if (raw_buffer != NULL) - target_read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum)); - } - else - { - if (lval != NULL) - *lval = lval_register; - addr = REGISTER_BYTE (regnum); - if (raw_buffer != NULL) - read_register_gen (regnum, raw_buffer); - } - if (addrp != NULL) - *addrp = addr; -} - -#if !defined (GET_SAVED_REGISTER) -#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ - default_get_saved_register(raw_buffer, optimized, addrp, frame, regnum, lval) -#endif - -void -get_saved_register (char *raw_buffer, - int *optimized, - CORE_ADDR *addrp, - struct frame_info *frame, - int regnum, - enum lval_type *lval) -{ - GET_SAVED_REGISTER (raw_buffer, optimized, addrp, frame, regnum, lval); -} - -/* READ_RELATIVE_REGISTER_RAW_BYTES_FOR_FRAME - - Copy the bytes of register REGNUM, relative to the input stack frame, - into our memory at MYADDR, in target byte order. - The number of bytes copied is REGISTER_RAW_SIZE (REGNUM). - - Returns 1 if could not be read, 0 if could. */ - -/* FIXME: This function increases the confusion between FP_REGNUM - and the virtual/pseudo-frame pointer. */ - -static int -read_relative_register_raw_bytes_for_frame (int regnum, - char *myaddr, - struct frame_info *frame) -{ - int optim; - if (regnum == FP_REGNUM && frame) - { - /* Put it back in target format. */ - store_address (myaddr, REGISTER_RAW_SIZE (FP_REGNUM), - (LONGEST) FRAME_FP (frame)); - - return 0; - } - - get_saved_register (myaddr, &optim, (CORE_ADDR *) NULL, frame, - regnum, (enum lval_type *) NULL); - - if (register_cached (regnum) < 0) - return 1; /* register value not available */ - - return optim; -} - -/* READ_RELATIVE_REGISTER_RAW_BYTES - - Copy the bytes of register REGNUM, relative to the current stack - frame, into our memory at MYADDR, in target byte order. - The number of bytes copied is REGISTER_RAW_SIZE (REGNUM). - - Returns 1 if could not be read, 0 if could. */ - -int -read_relative_register_raw_bytes (int regnum, char *myaddr) -{ - return read_relative_register_raw_bytes_for_frame (regnum, myaddr, - selected_frame); -} - - /* Low level examining and depositing of registers. The caller is responsible for making sure that the inferior is |