* arm-tdep.c (arm_frameless_function_invocation): Add some comments.
(arm_frame_args_address, arm_frame_locals_address): New functions. (arm_frame_num_args): New function. * config/tm-arm.h (FRAME_ARGS_ADDRESS): Call arm_frame_args_address. (FRAME_LOCALS_ADDRESS): Call arm_frame_locals_address. (FRMA_NUM_ARGS): Call arm_frame_num_args.
This commit is contained in:
Richard Earnshaw
parent
6c571f0083
commit
0defa245fc
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@ -1,3 +1,12 @@
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2002-02-01 Richard Earnshaw <reanrsha@arm.com>
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* arm-tdep.c (arm_frameless_function_invocation): Add some comments.
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(arm_frame_args_address, arm_frame_locals_address): New functions.
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(arm_frame_num_args): New function.
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* config/tm-arm.h (FRAME_ARGS_ADDRESS): Call arm_frame_args_address.
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(FRAME_LOCALS_ADDRESS): Call arm_frame_locals_address.
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(FRMA_NUM_ARGS): Call arm_frame_num_args.
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2002-01-31 Michael Snyder <msnyder@redhat.com>
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* breakpoint.c (break_at_finish_command): Export.
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@ -297,12 +297,28 @@ arm_saved_pc_after_call (struct frame_info *frame)
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return ADDR_BITS_REMOVE (read_register (LR_REGNUM));
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}
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/* Determine whether the function invocation represented by FI has a
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frame on the stack associated with it. If it does return zero,
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otherwise return 1. */
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int
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arm_frameless_function_invocation (struct frame_info *fi)
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{
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CORE_ADDR func_start, after_prologue;
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int frameless;
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/* Sometimes we have functions that do a little setup (like saving the
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vN registers with the stmdb instruction, but DO NOT set up a frame.
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The symbol table will report this as a prologue. However, it is
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important not to try to parse these partial frames as frames, or we
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will get really confused.
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So I will demand 3 instructions between the start & end of the
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prologue before I call it a real prologue, i.e. at least
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mov ip, sp,
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stmdb sp!, {}
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sub sp, ip, #4. */
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func_start = (get_pc_function_start ((fi)->pc) + FUNCTION_START_OFFSET);
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after_prologue = SKIP_PROLOGUE (func_start);
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@ -314,6 +330,28 @@ arm_frameless_function_invocation (struct frame_info *fi)
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return frameless;
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}
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/* The address of the arguments in the frame. */
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CORE_ADDR
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arm_frame_args_address (struct frame_info *fi)
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{
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return fi->frame;
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}
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/* The address of the local variables in the frame. */
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CORE_ADDR
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arm_frame_locals_address (struct frame_info *fi)
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{
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return fi->frame;
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}
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/* The number of arguments being passed in the frame. */
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int
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arm_frame_num_args (struct frame_info *fi)
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{
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/* We have no way of knowing. */
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return -1;
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}
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/* A typical Thumb prologue looks like this:
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push {r7, lr}
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add sp, sp, #-28
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@ -330,48 +330,29 @@ CORE_ADDR arm_target_read_fp (void);
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However, if FRAME_CHAIN_VALID returns zero,
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it means the given frame is the outermost one and has no caller. */
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CORE_ADDR arm_frame_chain (struct frame_info *);
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#define FRAME_CHAIN(thisframe) arm_frame_chain (thisframe)
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extern CORE_ADDR arm_frame_chain (struct frame_info *);
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extern int arm_frame_chain_valid (CORE_ADDR, struct frame_info *);
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int arm_frame_chain_valid (CORE_ADDR, struct frame_info *);
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#define FRAME_CHAIN_VALID(chain, thisframe) \
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arm_frame_chain_valid (chain, thisframe)
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/* Define other aspects of the stack frame. */
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/* A macro that tells us whether the function invocation represented
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by FI does not have a frame on the stack associated with it. If it
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does not, FRAMELESS is set to 1, else 0.
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Sometimes we have functions that do a little setup (like saving the
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vN registers with the stmdb instruction, but DO NOT set up a frame.
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The symbol table will report this as a prologue. However, it is
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important not to try to parse these partial frames as frames, or we
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will get really confused.
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So I will demand 3 instructions between the start & end of the
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prologue before I call it a real prologue, i.e. at least
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mov ip, sp,
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stmdb sp!, {}
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sub sp, ip, #4. */
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extern int arm_frameless_function_invocation (struct frame_info *fi);
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#define FRAMELESS_FUNCTION_INVOCATION(FI) \
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(arm_frameless_function_invocation (FI))
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int arm_frameless_function_invocation (struct frame_info *fi);
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#define FRAMELESS_FUNCTION_INVOCATION(FI) arm_frameless_function_invocation(FI)
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/* Saved Pc. */
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CORE_ADDR arm_frame_saved_pc (struct frame_info *);
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#define FRAME_SAVED_PC(FI) arm_frame_saved_pc (FI)
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#define FRAME_SAVED_PC(FRAME) arm_frame_saved_pc (FRAME)
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extern CORE_ADDR arm_frame_saved_pc (struct frame_info *);
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CORE_ADDR arm_frame_args_address(struct frame_info *);
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#define FRAME_ARGS_ADDRESS(FI) arm_frame_args_address(FI)
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#define FRAME_ARGS_ADDRESS(fi) (fi->frame)
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CORE_ADDR arm_frame_locals_address(struct frame_info *);
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#define FRAME_LOCALS_ADDRESS(FI) arm_frame_locals_address(FI)
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#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
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/* Return number of args passed to a frame.
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Can return -1, meaning no way to tell. */
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#define FRAME_NUM_ARGS(fi) (-1)
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int arm_frame_num_args(struct frame_info *);
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#define FRAME_NUM_ARGS(FI) arm_frame_num_args(FI)
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/* Return number of bytes at start of arglist that are not really args. */
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@ -389,10 +370,9 @@ void arm_frame_init_saved_regs (struct frame_info *);
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/* Things needed for making the inferior call functions. */
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CORE_ADDR arm_push_arguments (int, struct value **, CORE_ADDR, int, CORE_ADDR);
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#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
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sp = arm_push_arguments ((nargs), (args), (sp), (struct_return), (struct_addr))
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extern CORE_ADDR arm_push_arguments (int, struct value **, CORE_ADDR, int,
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CORE_ADDR);
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arm_push_arguments ((nargs), (args), (sp), (struct_return), (struct_addr))
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/* Push an empty stack frame, to record the current PC, etc. */
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