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[RFA] SH: Deprecate deprecated functions, use new frame interface
- From: Corinna Vinschen <gdb-patches at sources dot redhat dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Mon, 8 Sep 2003 18:55:10 +0200
- Subject: [RFA] SH: Deprecate deprecated functions, use new frame interface
Hi,
the attached patch switches sh-tdep.c to using all the new frame code
stuff. All deprecated functions are gone. It implements its own
heuristic frame sniffer plus it adds the dwarf2 frame sniffer to the
frame unwind sniffer list. This new code defines all register numbers
as enumeration values instead of as part of the tdep structure. The
result is that the tdep structure could be eliminated entirely. Some
defintions in sh-tdep.c have been changed for readability.
ChangeLog:
* sh-tdep.h (struct gdbarch_tdep): Remove. Change all register
numbers to enumeration values.
* sh-tdep.c: Accomodate above change.
(SH_NUM_REGS): Rename from SH_DEFAULT_NUM_REGS.
(struct frame_extra_info): Remove.
(struct sh_frame_cache): New structure.
(NUM_PSEUDO_REGS_SH_MEDIA): Remove (sh5 only).
(NUM_PSEUDO_REGS_SH_COMPACT): Remove (sh5 only).
(GET_SOURCE_REG): New macro extracting source register of an opcode.
(GET_TARGET_REG): Ditto but target register.
(GET_PUSHED_REG): Remove.
(IS_ADD_IMM_SP): Rename from IS_ADD_SP.
(IS_FPUSH): Rename from IS_FMOV.
(IS_MOV_ARG_TO_REG): New macro.
(IS_MOV_ARG_TO_IND_R14): New macro.
(IS_MOV_ARG_TO_IND_R14_WITH_DISP): New macro.
(IS_MOVW_PCREL_TO_REG): New macro.
(IS_MOVL_PCREL_TO_REG): New macro.
(IS_SUB_REG_FROM_SP): New macro.
(IS_ARG_MOV): Remove.
(IS_MOV_TO_R14): Remove.
(IS_RESTORE_FP): New macro.
(IS_RTS): New macro.
(IS_LDS): New macro.
(IS_MOV_FP_SP): New macro.
(IS_ADD_REG_TO_FP): New macro.
(IS_ADD_IMM_FP): New macro.
(sh_skip_prologue_hard_way): Remove.
(sh_saved_pc_after_call): Remove.
(sh_frame_chain): Remove.
(sh_find_callers_reg): Remove.
(sh_nofp_frame_init_saved_regs): Remove.
(sh_fp_frame_init_saved_regs): Remove.
(sh_init_extra_frame_info): Remove.
(sh_analyze_prologue): New function.
(sh_skip_prologue): Remove deprecated code. Rely on new function
sh_analyze_prologue when after_prologue fails.
(sh_extract_struct_value_address): Remove useless comment.
(sh_frame_saved_pc): Remove.
(sh_dsp_register_sim_regno): Use register values from sh-tdep.h
instead of own local values.
(sh_alloc_frame_cache): New function.
(sh_frame_cache): Ditto.
(sh_frame_prev_register): Ditto.
(sh_frame_this_id): Ditto.
(sh_frame_unwind): New structure defining the heuristic frame
sniffer interface.
(sh_frame_sniffer): New function.
(sh_unwind_sp): Ditto.
(sh_unwind_pc): Ditto.
(sh_unwind_dummy_id): Ditto.
(sh_frame_base_address): Ditto.
(sh_frame_base): New structure defining new frame base code.
(sh_in_function_epilogue_p): New function.
(sh_gdbarch_init): Restructure and simplify to eliminate deprecated
code and to call all new code instead. Initialize dwarf2 and
heuristic frame sniffer.
(sh_dump_tdep): Remove.
(_initialize_sh_tdep): Accomodate removing sh_dump_tdep.
* sh3-rom.c (sh3_supply_register): Accomodate sh-tdep.h changes.
Index: sh-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/sh-tdep.c,v
retrieving revision 1.137
diff -u -p -r1.137 sh-tdep.c
--- sh-tdep.c 8 Sep 2003 11:26:20 -0000 1.137
+++ sh-tdep.c 8 Sep 2003 16:26:46 -0000
@@ -26,6 +26,9 @@
#include "defs.h"
#include "frame.h"
+#include "frame-base.h"
+#include "frame-unwind.h"
+#include "dwarf2-frame.h"
#include "symtab.h"
#include "symfile.h"
#include "gdbtypes.h"
@@ -35,6 +38,7 @@
#include "dis-asm.h"
#include "inferior.h"
#include "gdb_string.h"
+#include "gdb_assert.h"
#include "arch-utils.h"
#include "floatformat.h"
#include "regcache.h"
@@ -53,17 +57,21 @@
static void (*sh_show_regs) (void);
-#define SH_DEFAULT_NUM_REGS 59
+#define SH_NUM_REGS 59
-/* Define other aspects of the stack frame.
- we keep a copy of the worked out return pc lying around, since it
- is a useful bit of info */
-
-struct frame_extra_info
+struct sh_frame_cache
{
- CORE_ADDR return_pc;
- int leaf_function;
- int f_offset;
+ /* Base address. */
+ CORE_ADDR base;
+ LONGEST sp_offset;
+ CORE_ADDR pc;
+
+ /* Flag showing that a frame has been created in the prologue code. */
+ int uses_fp;
+
+ /* Saved registers. */
+ CORE_ADDR saved_regs[SH_NUM_REGS];
+ CORE_ADDR saved_sp;
};
static const char *
@@ -256,9 +264,6 @@ sh_sh4_register_name (int reg_nr)
return register_names[reg_nr];
}
-#define NUM_PSEUDO_REGS_SH_MEDIA 80
-#define NUM_PSEUDO_REGS_SH_COMPACT 51
-
static const unsigned char *
sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
@@ -286,29 +291,18 @@ sh_push_dummy_code (struct gdbarch *gdba
}
/* Prologue looks like
- [mov.l <regs>,@-r15]...
- [sts.l pr,@-r15]
- [mov.l r14,@-r15]
- [mov r15,r14]
-
- Actually it can be more complicated than this. For instance, with
- newer gcc's:
-
- mov.l r14,@-r15
- add #-12,r15
- mov r15,r14
- mov r4,r1
- mov r5,r2
- mov.l r6,@(4,r14)
- mov.l r7,@(8,r14)
- mov.b r1,@r14
- mov r14,r1
- mov r14,r1
- add #2,r1
- mov.w r2,@r1
+ mov.l r14,@-r15
+ sts.l pr,@-r15
+ mov.l <regs>,@-r15
+ sub <room_for_loca_vars>,r15
+ mov r15,r14
+ Actually it can be more complicated than this but that's it, basically.
*/
+#define GET_SOURCE_REG(x) (((x) >> 4) & 0xf)
+#define GET_TARGET_REG(x) (((x) >> 8) & 0xf)
+
/* STS.L PR,@-r15 0100111100100010
r15-4-->r15, PR-->(r15) */
#define IS_STS(x) ((x) == 0x4f22)
@@ -317,15 +311,13 @@ sh_push_dummy_code (struct gdbarch *gdba
r15-4-->r15, Rm-->(R15) */
#define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06)
-#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf)
-
/* MOV r15,r14 0110111011110011
r15-->r14 */
#define IS_MOV_SP_FP(x) ((x) == 0x6ef3)
/* ADD #imm,r15 01111111iiiiiiii
r15+imm-->r15 */
-#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00)
+#define IS_ADD_IMM_SP(x) (((x) & 0xff00) == 0x7f00)
#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00)
#define IS_SHLL_R3(x) ((x) == 0x4300)
@@ -337,133 +329,43 @@ sh_push_dummy_code (struct gdbarch *gdba
/* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011
FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011
FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */
-#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b)
+/* CV, 2003-08-28: Only suitable with Rn == SP, therefore name changed to
+ make this entirely clear. */
+/* #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) */
+#define IS_FPUSH(x) (((x) & 0xff0f) == 0xff0b)
+
+/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_REG(x) \
+ (((x) & 0xf00f) == 0x6003 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@Rn 0010nnnnmmmm0010 n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14(x) \
+ (((x) & 0xff0f) == 0x2e02 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@(disp*4,Rn) 00011110mmmmdddd n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14_WITH_DISP(x) \
+ (((x) & 0xff00) == 0x1e00 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+
+/* MOV.W @(disp*2,PC),Rn 1001nnnndddddddd */
+#define IS_MOVW_PCREL_TO_REG(x) (((x) & 0xf000) == 0x9000)
+/* MOV.L @(disp*4,PC),Rn 1101nnnndddddddd */
+#define IS_MOVL_PCREL_TO_REG(x) (((x) & 0xf000) == 0xd000)
+/* SUB Rn,R15 00111111nnnn1000 */
+#define IS_SUB_REG_FROM_SP(x) (((x) & 0xff0f) == 0x3f08)
-/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011
- MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd
- MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010
- where Rm is one of r4,r5,r6,r7 which are the argument registers. */
-#define IS_ARG_MOV(x) \
-(((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)))
-
-/* MOV.L Rm,@(disp,r14) 00011110mmmmdddd
- Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */
-#define IS_MOV_TO_R14(x) \
- ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))
-
#define FPSCR_SZ (1 << 20)
-/* Skip any prologue before the guts of a function */
-
-/* Skip the prologue using the debug information. If this fails we'll
- fall back on the 'guess' method below. */
-static CORE_ADDR
-after_prologue (CORE_ADDR pc)
-{
- struct symtab_and_line sal;
- CORE_ADDR func_addr, func_end;
-
- /* If we can not find the symbol in the partial symbol table, then
- there is no hope we can determine the function's start address
- with this code. */
- if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
- return 0;
-
- /* Get the line associated with FUNC_ADDR. */
- sal = find_pc_line (func_addr, 0);
-
- /* There are only two cases to consider. First, the end of the source line
- is within the function bounds. In that case we return the end of the
- source line. Second is the end of the source line extends beyond the
- bounds of the current function. We need to use the slow code to
- examine instructions in that case. */
- if (sal.end < func_end)
- return sal.end;
- else
- return 0;
-}
-
-/* Here we look at each instruction in the function, and try to guess
- where the prologue ends. Unfortunately this is not always
- accurate. */
-static CORE_ADDR
-sh_skip_prologue_hard_way (CORE_ADDR start_pc)
-{
- CORE_ADDR here, end;
- int updated_fp = 0;
-
- if (!start_pc)
- return 0;
-
- for (here = start_pc, end = start_pc + (2 * 28); here < end;)
- {
- int w = read_memory_integer (here, 2);
- here += 2;
- if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w)
- || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w)
- || IS_ARG_MOV (w) || IS_MOV_TO_R14 (w))
- {
- start_pc = here;
- }
- else if (IS_MOV_SP_FP (w))
- {
- start_pc = here;
- updated_fp = 1;
- }
- else
- /* Don't bail out yet, if we are before the copy of sp. */
- if (updated_fp)
- break;
- }
-
- return start_pc;
-}
-
-static CORE_ADDR
-sh_skip_prologue (CORE_ADDR pc)
-{
- CORE_ADDR post_prologue_pc;
-
- /* See if we can determine the end of the prologue via the symbol table.
- If so, then return either PC, or the PC after the prologue, whichever
- is greater. */
- post_prologue_pc = after_prologue (pc);
-
- /* If after_prologue returned a useful address, then use it. Else
- fall back on the instruction skipping code. */
- if (post_prologue_pc != 0)
- return max (pc, post_prologue_pc);
- else
- return sh_skip_prologue_hard_way (pc);
-}
-
-/* Immediately after a function call, return the saved pc.
- Can't always go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions.
-
- The return address is the value saved in the PR register + 4 */
-static CORE_ADDR
-sh_saved_pc_after_call (struct frame_info *frame)
-{
- return (ADDR_BITS_REMOVE (read_register (PR_REGNUM)));
-}
-
-/* Should call_function allocate stack space for a struct return? */
-static int
-sh_use_struct_convention (int gcc_p, struct type *type)
-{
-#if 0
- return (TYPE_LENGTH (type) > 1);
-#else
- int len = TYPE_LENGTH (type);
- int nelem = TYPE_NFIELDS (type);
- return ((len != 1 && len != 2 && len != 4 && len != 8) || nelem != 1) &&
- (len != 8 || TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) != 4);
-#endif
-}
+/* The following instructions are used for epilogue testing. */
+#define IS_RESTORE_FP(x) ((x) == 0x6ef6)
+#define IS_RTS(x) ((x) == 0x000b)
+#define IS_LDS(x) ((x) == 0x4f26)
+#define IS_MOV_FP_SP(x) ((x) == 0x6fe3)
+#define IS_ADD_REG_TO_FP(x) (((x) & 0xff0f) == 0x3e0c)
+#define IS_ADD_IMM_FP(x) (((x) & 0xff00) == 0x7e00)
/* Disassemble an instruction. */
static int
@@ -473,295 +375,133 @@ gdb_print_insn_sh (bfd_vma memaddr, disa
return print_insn_sh (memaddr, info);
}
-/* Given a GDB frame, determine the address of the calling function's
- frame. This will be used to create a new GDB frame struct, and
- then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC
- will be called for the new frame.
-
- For us, the frame address is its stack pointer value, so we look up
- the function prologue to determine the caller's sp value, and return it. */
static CORE_ADDR
-sh_frame_chain (struct frame_info *frame)
-{
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- return get_frame_base (frame); /* dummy frame same as caller's frame */
- if (get_frame_pc (frame) && !inside_entry_file (get_frame_pc (frame)))
- return read_memory_integer (get_frame_base (frame)
- + get_frame_extra_info (frame)->f_offset, 4);
- else
- return 0;
-}
-
-/* Find REGNUM on the stack. Otherwise, it's in an active register. One thing
- we might want to do here is to check REGNUM against the clobber mask, and
- somehow flag it as invalid if it isn't saved on the stack somewhere. This
- would provide a graceful failure mode when trying to get the value of
- caller-saves registers for an inner frame. */
-static CORE_ADDR
-sh_find_callers_reg (struct frame_info *fi, int regnum)
-{
- for (; fi; fi = get_next_frame (fi))
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- /* When the caller requests PR from the dummy frame, we return PC because
- that's where the previous routine appears to have done a call from. */
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), regnum);
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- if (!get_frame_pc (fi))
- return 0;
- if (get_frame_saved_regs (fi)[regnum] != 0)
- return read_memory_integer (get_frame_saved_regs (fi)[regnum],
- register_size (current_gdbarch, regnum));
- }
- return read_register (regnum);
-}
-
-/* Put here the code to store, into a struct frame_saved_regs, the
- addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special: the address we
- return for it IS the sp for the next frame. */
-static void
-sh_nofp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof(int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
+sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
+ struct sh_frame_cache *cache)
+{
+ ULONGEST inst;
+ CORE_ADDR opc;
+ int offset;
+ int sav_offset = 0;
int r3_val = 0;
- char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi),
- get_frame_base (fi));
-
- if (get_frame_saved_regs (fi) == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS);
- return;
- }
-
- get_frame_extra_info (fi)->leaf_function = 1;
- get_frame_extra_info (fi)->f_offset = 0;
+ int reg, sav_reg = -1;
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
-
- depth = 0;
-
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_frame_func (fi);
- if (!pc)
- {
- deprecated_update_frame_pc_hack (fi, 0);
- return;
- }
+ if (pc >= current_pc)
+ return current_pc;
+ cache->uses_fp = 0;
for (opc = pc + (2 * 28); pc < opc; pc += 2)
{
- insn = read_memory_integer (pc, 2);
+ inst = read_memory_unsigned_integer (pc, 2);
/* See where the registers will be saved to */
- if (IS_PUSH (insn))
+ if (IS_PUSH (inst))
{
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
+ cache->saved_regs[GET_SOURCE_REG (inst)] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else if (IS_STS (insn))
+ else if (IS_STS (inst))
{
- where[PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- get_frame_extra_info (fi)->leaf_function = 0;
- depth += 4;
+ cache->saved_regs[PR_REGNUM] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else if (IS_MOV_R3 (insn))
+ else if (IS_MOV_R3 (inst))
{
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
+ r3_val = ((inst & 0xff) ^ 0x80) - 0x80;
}
- else if (IS_SHLL_R3 (insn))
+ else if (IS_SHLL_R3 (inst))
{
r3_val <<= 1;
}
- else if (IS_ADD_R3SP (insn))
+ else if (IS_ADD_R3SP (inst))
{
- depth += -r3_val;
+ cache->sp_offset += -r3_val;
}
- else if (IS_ADD_SP (insn))
+ else if (IS_ADD_IMM_SP (inst))
{
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
+ offset = ((inst & 0xff) ^ 0x80) - 0x80;
+ cache->sp_offset -= offset;
}
- else if (IS_MOV_SP_FP (insn))
- break;
-#if 0 /* This used to just stop when it found an instruction that
- was not considered part of the prologue. Now, we just
- keep going looking for likely instructions. */
- else
- break;
-#endif
- }
-
- /* Now we know how deep things are, we can work out their addresses */
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- {
- if (where[rn] >= 0)
- {
- if (rn == DEPRECATED_FP_REGNUM)
- have_fp = 1;
-
- get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - where[rn] + depth - 4;
- }
- else
- {
- get_frame_saved_regs (fi)[rn] = 0;
- }
- }
-
- if (have_fp)
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = read_memory_integer (get_frame_saved_regs (fi)[DEPRECATED_FP_REGNUM], 4);
- }
- else
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = get_frame_base (fi) - 4;
- }
-
- get_frame_extra_info (fi)->f_offset = depth - where[DEPRECATED_FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
-}
-
-/* For vectors of 4 floating point registers. */
-static int
-fv_reg_base_num (int fv_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4;
- return fp_regnum;
-}
-
-/* For double precision floating point registers, i.e 2 fp regs.*/
-static int
-dr_reg_base_num (int dr_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2;
- return fp_regnum;
-}
-
-static void
-sh_fp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
- int r3_val = 0;
- char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi), get_frame_base (fi));
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (get_frame_saved_regs (fi) == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS);
- return;
- }
-
- get_frame_extra_info (fi)->leaf_function = 1;
- get_frame_extra_info (fi)->f_offset = 0;
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
-
- depth = 0;
-
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_frame_func (fi);
- if (!pc)
- {
- deprecated_update_frame_pc_hack (fi, 0);
- return;
- }
-
- for (opc = pc + (2 * 28); pc < opc; pc += 2)
- {
- insn = read_memory_integer (pc, 2);
- /* See where the registers will be saved to */
- if (IS_PUSH (insn))
- {
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
- }
- else if (IS_STS (insn))
- {
- where[PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- get_frame_extra_info (fi)->leaf_function = 0;
- depth += 4;
- }
- else if (IS_MOV_R3 (insn))
- {
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_SHLL_R3 (insn))
- {
- r3_val <<= 1;
+ else if (IS_MOVW_PCREL_TO_REG (inst))
+ {
+ if (sav_reg < 0)
+ {
+ reg = GET_TARGET_REG (inst);
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (((inst & 0xff) ^ 0x80) - 0x80) << 1;
+ sav_offset =
+ read_memory_integer (((pc + 4) & ~3) + offset, 2);
+ }
+ }
}
- else if (IS_ADD_R3SP (insn))
- {
- depth += -r3_val;
+ else if (IS_MOVL_PCREL_TO_REG (inst))
+ {
+ if (sav_reg < 0)
+ {
+ reg = (inst & 0x0f00) >> 8;
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (((inst & 0xff) ^ 0x80) - 0x80) << 1;
+ sav_offset =
+ read_memory_integer (((pc + 4) & ~3) + offset, 4);
+ }
+ }
}
- else if (IS_ADD_SP (insn))
- {
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
+ else if (IS_SUB_REG_FROM_SP (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ if (sav_reg > 0 && reg == sav_reg)
+ {
+ sav_reg = -1;
+ }
+ cache->sp_offset += sav_offset;
}
- else if (IS_FMOV (insn))
+ else if (IS_FPUSH (inst))
{
- if (read_register (tdep->FPSCR_REGNUM) & FPSCR_SZ)
+ if (read_register (FPSCR_REGNUM) & FPSCR_SZ)
{
- depth += 8;
+ cache->sp_offset += 8;
}
else
{
- depth += 4;
+ cache->sp_offset += 4;
}
}
- else if (IS_MOV_SP_FP (insn))
- break;
+ else if (IS_MOV_SP_FP (inst))
+ {
+ if (!cache->uses_fp)
+ cache->uses_fp = 1;
+ /* At this point, only allow argument register moves to other
+ registers or argument register moves to @(X,fp) which are
+ moving the register arguments onto the stack area allocated
+ by a former add somenumber to SP call. Don't allow moving
+ to an fp indirect address above fp + cache->sp_offset. */
+ pc += 2;
+ for (opc = pc + 12; pc < opc; pc += 2)
+ {
+ inst = read_memory_integer (pc, 2);
+ if (IS_MOV_ARG_TO_IND_R14 (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ if (cache->sp_offset > 0)
+ cache->saved_regs[reg] = cache->sp_offset;
+ }
+ else if (IS_MOV_ARG_TO_IND_R14_WITH_DISP (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ offset = (inst & 0xf) * 4;
+ if (cache->sp_offset > offset)
+ cache->saved_regs[reg] = cache->sp_offset - offset;
+ }
+ else if (IS_MOV_ARG_TO_REG (inst))
+ continue;
+ else
+ break;
+ }
+ break;
+ }
#if 0 /* This used to just stop when it found an instruction that
was not considered part of the prologue. Now, we just
keep going looking for likely instructions. */
@@ -770,68 +510,71 @@ sh_fp_frame_init_saved_regs (struct fram
#endif
}
- /* Now we know how deep things are, we can work out their addresses */
+ return pc;
+}
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- {
- if (where[rn] >= 0)
- {
- if (rn == DEPRECATED_FP_REGNUM)
- have_fp = 1;
+/* Skip any prologue before the guts of a function */
- get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - where[rn] + depth - 4;
- }
- else
- {
- get_frame_saved_regs (fi)[rn] = 0;
- }
- }
+/* Skip the prologue using the debug information. If this fails we'll
+ fall back on the 'guess' method below. */
+static CORE_ADDR
+after_prologue (CORE_ADDR pc)
+{
+ struct symtab_and_line sal;
+ CORE_ADDR func_addr, func_end;
- if (have_fp)
- {
- get_frame_saved_regs (fi)[SP_REGNUM] =
- read_memory_integer (get_frame_saved_regs (fi)[DEPRECATED_FP_REGNUM], 4);
- }
- else
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = get_frame_base (fi) - 4;
- }
+ /* If we can not find the symbol in the partial symbol table, then
+ there is no hope we can determine the function's start address
+ with this code. */
+ if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ return 0;
+
+ /* Get the line associated with FUNC_ADDR. */
+ sal = find_pc_line (func_addr, 0);
- get_frame_extra_info (fi)->f_offset = depth - where[DEPRECATED_FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
+ /* There are only two cases to consider. First, the end of the source line
+ is within the function bounds. In that case we return the end of the
+ source line. Second is the end of the source line extends beyond the
+ bounds of the current function. We need to use the slow code to
+ examine instructions in that case. */
+ if (sal.end < func_end)
+ return sal.end;
+ else
+ return 0;
}
-/* Initialize the extra info saved in a FRAME */
-static void
-sh_init_extra_frame_info (int fromleaf, struct frame_info *fi)
+static CORE_ADDR
+sh_skip_prologue (CORE_ADDR start_pc)
{
+ CORE_ADDR pc;
+ struct sh_frame_cache cache;
- frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
+ /* See if we can determine the end of the prologue via the symbol table.
+ If so, then return either PC, or the PC after the prologue, whichever
+ is greater. */
+ pc = after_prologue (start_pc);
- if (get_next_frame (fi))
- deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
+ /* If after_prologue returned a useful address, then use it. Else
+ fall back on the instruction skipping code. */
+ if (pc)
+ return max (pc, start_pc);
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- {
- /* We need to setup fi->frame here because call_function_by_hand
- gets it wrong by assuming it's always FP. */
- deprecated_update_frame_base_hack (fi, deprecated_read_register_dummy (get_frame_pc (fi), get_frame_base (fi),
- SP_REGNUM));
- get_frame_extra_info (fi)->return_pc = deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi),
- PC_REGNUM);
- get_frame_extra_info (fi)->f_offset = -(DEPRECATED_CALL_DUMMY_LENGTH + 4);
- get_frame_extra_info (fi)->leaf_function = 0;
- return;
- }
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- get_frame_extra_info (fi)->return_pc =
- sh_find_callers_reg (fi, PR_REGNUM);
- }
+ cache.sp_offset = -4;
+ pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache);
+ if (!cache.uses_fp)
+ return start_pc;
+
+ return pc;
+}
+
+/* Should call_function allocate stack space for a struct return? */
+static int
+sh_use_struct_convention (int gcc_p, struct type *type)
+{
+ int len = TYPE_LENGTH (type);
+ int nelem = TYPE_NFIELDS (type);
+ return ((len != 1 && len != 2 && len != 4 && len != 8) || nelem != 1) &&
+ (len != 8 || TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) != 4);
}
/* Extract from an array REGBUF containing the (raw) register state
@@ -841,48 +584,12 @@ static CORE_ADDR
sh_extract_struct_value_address (struct regcache *regcache)
{
ULONGEST addr;
- /*FIXME: Is R0 really correct here? Not STRUCT_RETURN_REGNUM? */
+
regcache_cooked_read_unsigned (regcache, STRUCT_RETURN_REGNUM, &addr);
return addr;
}
static CORE_ADDR
-sh_frame_saved_pc (struct frame_info *frame)
-{
- return (get_frame_extra_info (frame)->return_pc);
-}
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-static void
-sh_pop_frame (void)
-{
- register struct frame_info *frame = get_current_frame ();
- register CORE_ADDR fp;
- register int regnum;
-
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- generic_pop_dummy_frame ();
- else
- {
- fp = get_frame_base (frame);
- DEPRECATED_FRAME_INIT_SAVED_REGS (frame);
-
- /* Copy regs from where they were saved in the frame */
- for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
- if (get_frame_saved_regs (frame)[regnum])
- write_register (regnum,
- read_memory_integer (get_frame_saved_regs (frame)[regnum], 4));
-
- write_register (PC_REGNUM, get_frame_extra_info (frame)->return_pc);
- write_register (SP_REGNUM, fp + 4);
- }
- flush_cached_frames ();
-}
-
-static CORE_ADDR
sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
{
return sp & ~3;
@@ -958,16 +665,13 @@ sh_push_dummy_call_fpu (struct gdbarch *
char valbuf[4];
int len;
int odd_sized_struct;
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* first force sp to a 4-byte alignment */
sp = sh_frame_align (gdbarch, sp);
- /* The "struct return pointer" pseudo-argument has its own dedicated
- register */
if (struct_return)
- regcache_cooked_write_unsigned (regcache,
- STRUCT_RETURN_REGNUM,
+ regcache_cooked_write_unsigned (regcache,
+ STRUCT_RETURN_REGNUM,
struct_addr);
/* Now make sure there's space on the stack */
@@ -1069,13 +773,10 @@ sh_push_dummy_call_nofpu (struct gdbarch
char valbuf[4];
int len;
int odd_sized_struct;
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* first force sp to a 4-byte alignment */
sp = sh_frame_align (gdbarch, sp);
- /* The "struct return pointer" pseudo-argument has its own dedicated
- register */
if (struct_return)
regcache_cooked_write_unsigned (regcache,
STRUCT_RETURN_REGNUM,
@@ -1239,8 +940,6 @@ sh3e_sh4_store_return_value (struct type
static void
sh_generic_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1275,8 +974,6 @@ sh_generic_show_regs (void)
static void
sh3_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1288,8 +985,8 @@ sh3_show_regs (void)
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1326,8 +1023,8 @@ sh2e_show_regs (void)
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM),
- (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM));
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1371,8 +1068,6 @@ sh2e_show_regs (void)
static void
sh3e_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1384,11 +1079,11 @@ sh3e_show_regs (void)
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1432,8 +1127,6 @@ sh3e_show_regs (void)
static void
sh3_dsp_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1446,11 +1139,11 @@ sh3_dsp_show_regs (void)
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
+ (long) read_register (DSR_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1472,28 +1165,26 @@ sh3_dsp_show_regs (void)
(long) read_register (15));
printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
+ (long) read_register (A0G_REGNUM) & 0xff,
+ (long) read_register (A0_REGNUM),
+ (long) read_register (M0_REGNUM),
+ (long) read_register (X0_REGNUM),
+ (long) read_register (Y0_REGNUM),
+ (long) read_register (RS_REGNUM),
+ (long) read_register (MOD_REGNUM));
printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
+ (long) read_register (A1G_REGNUM) & 0xff,
+ (long) read_register (A1_REGNUM),
+ (long) read_register (M1_REGNUM),
+ (long) read_register (X1_REGNUM),
+ (long) read_register (Y1_REGNUM),
+ (long) read_register (RE_REGNUM));
}
static void
sh4_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- int pr = read_register (tdep->FPSCR_REGNUM) & 0x80000;
+ int pr = read_register (FPSCR_REGNUM) & 0x80000;
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1505,11 +1196,11 @@ sh4_show_regs (void)
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1557,8 +1248,6 @@ sh4_show_regs (void)
static void
sh_dsp_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
(long) read_register (SR_REGNUM),
@@ -1571,7 +1260,7 @@ sh_dsp_show_regs (void)
(long) read_register (VBR_REGNUM));
printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
+ (long) read_register (DSR_REGNUM));
printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
(long) read_register (0),
@@ -1593,20 +1282,20 @@ sh_dsp_show_regs (void)
(long) read_register (15));
printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
+ (long) read_register (A0G_REGNUM) & 0xff,
+ (long) read_register (A0_REGNUM),
+ (long) read_register (M0_REGNUM),
+ (long) read_register (X0_REGNUM),
+ (long) read_register (Y0_REGNUM),
+ (long) read_register (RS_REGNUM),
+ (long) read_register (MOD_REGNUM));
printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
+ (long) read_register (A1G_REGNUM) & 0xff,
+ (long) read_register (A1_REGNUM),
+ (long) read_register (M1_REGNUM),
+ (long) read_register (X1_REGNUM),
+ (long) read_register (Y1_REGNUM),
+ (long) read_register (RE_REGNUM));
}
static void
@@ -1621,11 +1310,9 @@ sh_show_regs_command (char *args, int fr
static struct type *
sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
+ && (reg_nr <= FP_LAST_REGNUM))
+ || (reg_nr == FPUL_REGNUM))
return builtin_type_float;
else
return builtin_type_int;
@@ -1643,17 +1330,15 @@ sh_sh4_build_float_register_type (int hi
static struct type *
sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
+ && (reg_nr <= FP_LAST_REGNUM))
+ || (reg_nr == FPUL_REGNUM))
return builtin_type_float;
- else if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ else if (reg_nr >= DR0_REGNUM
+ && reg_nr <= DR_LAST_REGNUM)
return builtin_type_double;
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM
+ && reg_nr <= FV_LAST_REGNUM)
return sh_sh4_build_float_register_type (3);
else
return builtin_type_int;
@@ -1695,10 +1380,8 @@ static void
sh_sh4_register_convert_to_virtual (int regnum, struct type *type,
char *from, char *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ if (regnum >= DR0_REGNUM
+ && regnum <= DR_LAST_REGNUM)
{
DOUBLEST val;
floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val);
@@ -1712,10 +1395,8 @@ static void
sh_sh4_register_convert_to_raw (struct type *type, int regnum,
const void *from, void *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ if (regnum >= DR0_REGNUM
+ && regnum <= DR_LAST_REGNUM)
{
DOUBLEST val = extract_typed_floating (from, type);
floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to);
@@ -1724,16 +1405,37 @@ sh_sh4_register_convert_to_raw (struct t
error("sh_register_convert_to_raw called with non DR register number");
}
+/* For vectors of 4 floating point registers. */
+static int
+fv_reg_base_num (int fv_regnum)
+{
+ int fp_regnum;
+
+ fp_regnum = FP0_REGNUM +
+ (fv_regnum - FV0_REGNUM) * 4;
+ return fp_regnum;
+}
+
+/* For double precision floating point registers, i.e 2 fp regs.*/
+static int
+dr_reg_base_num (int dr_regnum)
+{
+ int fp_regnum;
+
+ fp_regnum = FP0_REGNUM +
+ (dr_regnum - DR0_REGNUM) * 2;
+ return fp_regnum;
+}
+
static void
sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, void *buffer)
{
int base_regnum, portion;
char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ if (reg_nr >= DR0_REGNUM
+ && reg_nr <= DR_LAST_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
@@ -1748,8 +1450,8 @@ sh_pseudo_register_read (struct gdbarch
gdbarch_register_type (gdbarch, reg_nr),
temp_buffer, buffer);
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM
+ && reg_nr <= FV_LAST_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
@@ -1767,10 +1469,9 @@ sh_pseudo_register_write (struct gdbarch
{
int base_regnum, portion;
char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ if (reg_nr >= DR0_REGNUM
+ && reg_nr <= DR_LAST_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
@@ -1784,8 +1485,8 @@ sh_pseudo_register_write (struct gdbarch
(temp_buffer
+ register_size (gdbarch, base_regnum) * portion));
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM
+ && reg_nr <= FV_LAST_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
@@ -1804,7 +1505,7 @@ do_fv_register_info (struct gdbarch *gdb
{
int first_fp_reg_num = fv_reg_base_num (fv_regnum);
fprintf_filtered (file, "fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
- fv_regnum - gdbarch_tdep (gdbarch)->FV0_REGNUM,
+ fv_regnum - FV0_REGNUM,
(int) read_register (first_fp_reg_num),
(int) read_register (first_fp_reg_num + 1),
(int) read_register (first_fp_reg_num + 2),
@@ -1819,7 +1520,7 @@ do_dr_register_info (struct gdbarch *gdb
int first_fp_reg_num = dr_reg_base_num (dr_regnum);
fprintf_filtered (file, "dr%d\t0x%08x%08x\n",
- dr_regnum - gdbarch_tdep (gdbarch)->DR0_REGNUM,
+ dr_regnum - DR0_REGNUM,
(int) read_register (first_fp_reg_num),
(int) read_register (first_fp_reg_num + 1));
}
@@ -1828,16 +1529,14 @@ static void
sh_print_pseudo_register (struct gdbarch *gdbarch, struct ui_file *file,
int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
internal_error (__FILE__, __LINE__,
"Invalid pseudo register number %d\n", regnum);
- else if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ else if (regnum >= DR0_REGNUM
+ && regnum <= DR_LAST_REGNUM)
do_dr_register_info (gdbarch, file, regnum);
- else if (regnum >= tdep->FV0_REGNUM
- && regnum <= tdep->FV_LAST_REGNUM)
+ else if (regnum >= FV0_REGNUM
+ && regnum <= FV_LAST_REGNUM)
do_fv_register_info (gdbarch, file, regnum);
}
@@ -1957,7 +1656,7 @@ sh_print_registers_info (struct gdbarch
regnum ++;
}
else
- regnum += (gdbarch_tdep (gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */
+ regnum += (FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */
}
else
{
@@ -2019,86 +1718,317 @@ sh_linux_svr4_fetch_link_map_offsets (vo
}
#endif /* SVR4_SHARED_LIBS */
-
-enum
-{
- DSP_DSR_REGNUM = 24,
- DSP_A0G_REGNUM,
- DSP_A0_REGNUM,
- DSP_A1G_REGNUM,
- DSP_A1_REGNUM,
- DSP_M0_REGNUM,
- DSP_M1_REGNUM,
- DSP_X0_REGNUM,
- DSP_X1_REGNUM,
- DSP_Y0_REGNUM,
- DSP_Y1_REGNUM,
-
- DSP_MOD_REGNUM = 40,
-
- DSP_RS_REGNUM = 43,
- DSP_RE_REGNUM,
-
- DSP_R0_BANK_REGNUM = 51,
- DSP_R7_BANK_REGNUM = DSP_R0_BANK_REGNUM + 7
-};
-
static int
sh_dsp_register_sim_regno (int nr)
{
if (legacy_register_sim_regno (nr) < 0)
return legacy_register_sim_regno (nr);
- if (nr >= DSP_DSR_REGNUM && nr <= DSP_Y1_REGNUM)
- return nr - DSP_DSR_REGNUM + SIM_SH_DSR_REGNUM;
- if (nr == DSP_MOD_REGNUM)
+ if (nr >= DSR_REGNUM && nr <= Y1_REGNUM)
+ return nr - DSR_REGNUM + SIM_SH_DSR_REGNUM;
+ if (nr == MOD_REGNUM)
return SIM_SH_MOD_REGNUM;
- if (nr == DSP_RS_REGNUM)
+ if (nr == RS_REGNUM)
return SIM_SH_RS_REGNUM;
- if (nr == DSP_RE_REGNUM)
+ if (nr == RE_REGNUM)
return SIM_SH_RE_REGNUM;
- if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM)
- return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
+ if (nr >= R0_BANK_REGNUM && nr <= R7_BANK_REGNUM)
+ return nr - R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
return nr;
}
-
+
+static struct sh_frame_cache *
+sh_alloc_frame_cache (void)
+{
+ struct sh_frame_cache *cache;
+ int i;
+
+ cache = FRAME_OBSTACK_ZALLOC (struct sh_frame_cache);
+
+ /* Base address. */
+ cache->base = 0;
+ cache->saved_sp = 0;
+ cache->sp_offset = 0;
+ cache->pc = 0;
+
+ /* Frameless until proven otherwise. */
+ cache->uses_fp = 0;
+
+ /* Saved registers. We initialize these to -1 since zero is a valid
+ offset (that's where fp is supposed to be stored). */
+ for (i = 0; i < SH_NUM_REGS; i++)
+ {
+ cache->saved_regs[i] = -1;
+ }
+
+ return cache;
+}
+
+static struct sh_frame_cache *
+sh_frame_cache (struct frame_info *next_frame, void **this_cache)
+{
+ struct sh_frame_cache *cache;
+ CORE_ADDR current_pc;
+ int i;
+
+ if (*this_cache)
+ return *this_cache;
+
+ cache = sh_alloc_frame_cache ();
+ *this_cache = cache;
+
+ /* In principle, for normal frames, fp holds the frame pointer,
+ which holds the base address for the current stack frame.
+ However, for functions that don't need it, the frame pointer is
+ optional. For these "frameless" functions the frame pointer is
+ actually the frame pointer of the calling frame. */
+ cache->base = frame_unwind_register_unsigned (next_frame, FP_REGNUM);
+ if (cache->base == 0)
+ return cache;
+
+ cache->pc = frame_func_unwind (next_frame);
+ current_pc = frame_pc_unwind (next_frame);
+ if (cache->pc != 0)
+ sh_analyze_prologue (cache->pc, current_pc, cache);
+
+ if (!cache->uses_fp)
+ {
+ /* We didn't find a valid frame, which means that CACHE->base
+ currently holds the frame pointer for our calling frame. If
+ we're at the start of a function, or somewhere half-way its
+ prologue, the function's frame probably hasn't been fully
+ setup yet. Try to reconstruct the base address for the stack
+ frame by looking at the stack pointer. For truly "frameless"
+ functions this might work too. */
+ cache->base = frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+ }
+
+ /* Now that we have the base address for the stack frame we can
+ calculate the value of sp in the calling frame. */
+ cache->saved_sp = cache->base + cache->sp_offset;
+
+ /* Adjust all the saved registers such that they contain addresses
+ instead of offsets. */
+ for (i = 0; i < SH_NUM_REGS; i++)
+ if (cache->saved_regs[i] != -1)
+ cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i] - 4;
+
+ return cache;
+}
+
+static void
+sh_frame_prev_register (struct frame_info *next_frame, void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
+
+ gdb_assert (regnum >= 0);
+
+ if (regnum == SP_REGNUM && cache->saved_sp)
+ {
+ *optimizedp = 0;
+ *lvalp = not_lval;
+ *addrp = 0;
+ *realnump = -1;
+ if (valuep)
+ {
+ /* Store the value. */
+ store_unsigned_integer (valuep, 4, cache->saved_sp);
+ }
+ return;
+ }
+
+ /* The PC of the previous frame is stored in the PR register of
+ the current frame. Frob regnum so that we pull the value from
+ the correct place. */
+ if (regnum == PC_REGNUM)
+ regnum = PR_REGNUM;
+
+ if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
+ {
+ *optimizedp = 0;
+ *lvalp = lval_memory;
+ *addrp = cache->saved_regs[regnum];
+ *realnump = -1;
+ if (valuep)
+ {
+ /* Read the value in from memory. */
+ read_memory (*addrp, valuep,
+ register_size (current_gdbarch, regnum));
+ }
+ return;
+ }
+
+ frame_register_unwind (next_frame, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
+}
+
+static void
+sh_frame_this_id (struct frame_info *next_frame, void **this_cache,
+ struct frame_id *this_id)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
+
+ /* This marks the outermost frame. */
+ if (cache->base == 0)
+ return;
+
+ *this_id = frame_id_build (cache->saved_sp, cache->pc);
+}
+
+static const struct frame_unwind sh_frame_unwind =
+{
+ NORMAL_FRAME,
+ sh_frame_this_id,
+ sh_frame_prev_register
+};
+
+static const struct frame_unwind *
+sh_frame_sniffer (struct frame_info *next_frame)
+{
+ return &sh_frame_unwind;
+}
+
+static CORE_ADDR
+sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ return frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+}
+
+static CORE_ADDR
+sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ return frame_unwind_register_unsigned (next_frame, PC_REGNUM);
+}
+
+static struct frame_id
+sh_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ return frame_id_build (sh_unwind_sp (gdbarch, next_frame),
+ frame_pc_unwind (next_frame));
+}
+
+static CORE_ADDR
+sh_frame_base_address (struct frame_info *next_frame, void **this_cache)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
+
+ return cache->base;
+}
+
+static const struct frame_base sh_frame_base =
+{
+ &sh_frame_unwind,
+ sh_frame_base_address,
+ sh_frame_base_address,
+ sh_frame_base_address
+};
+
+/* The epilogue is defined here as the area at the end of a function,
+ either on the `ret' instruction itself or after an instruction which
+ destroys the function's stack frame. */
+static int
+sh_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+ CORE_ADDR func_addr = 0, func_end = 0;
+
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ {
+ ULONGEST inst;
+ /* The sh epilogue is max. 14 bytes long. Give another 14 bytes
+ for a nop and some fixed data (e.g. big offsets) which are
+ unfortunately also treated as part of the function (which
+ means, they are below func_end. */
+ CORE_ADDR addr = func_end - 28;
+ if (addr < func_addr + 4)
+ addr = func_addr + 4;
+ if (pc < addr)
+ return 0;
+
+ /* First search forward until hitting an rts. */
+ while (addr < func_end
+ && !IS_RTS (read_memory_unsigned_integer (addr, 2)))
+ addr += 2;
+ if (addr >= func_end)
+ return 0;
+
+ /* At this point we should find a mov.l @r15+,r14 instruction,
+ either before or after the rts. If not, then the function has
+ probably no "normal" epilogue and we bail out here. */
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2)))
+ addr -= 2;
+ else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2)))
+ return 0;
+
+ /* Step over possible lds.l @r15+,pr. */
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ if (IS_LDS (inst))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ }
+
+ /* Step over possible mov r14,r15. */
+ if (IS_MOV_FP_SP (inst))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ }
+
+ /* Now check for FP adjustments, using add #imm,r14 or add rX, r14
+ instructions. */
+ while (addr > func_addr + 4
+ && (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst)))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ }
+
+ if (pc >= addr)
+ return 1;
+ }
+ return 0;
+}
+
static gdbarch_init_ftype sh_gdbarch_init;
static struct gdbarch *
sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
- struct gdbarch_tdep *tdep;
sh_show_regs = sh_generic_show_regs;
switch (info.bfd_arch_info->mach)
{
case bfd_mach_sh2e:
- sh_show_regs = sh2e_show_regs;
- break;
+ sh_show_regs = sh2e_show_regs;
+ break;
case bfd_mach_sh_dsp:
- sh_show_regs = sh_dsp_show_regs;
- break;
+ sh_show_regs = sh_dsp_show_regs;
+ break;
case bfd_mach_sh3:
- sh_show_regs = sh3_show_regs;
- break;
+ sh_show_regs = sh3_show_regs;
+ break;
case bfd_mach_sh3e:
- sh_show_regs = sh3e_show_regs;
- break;
+ sh_show_regs = sh3e_show_regs;
+ break;
case bfd_mach_sh3_dsp:
- sh_show_regs = sh3_dsp_show_regs;
- break;
+ sh_show_regs = sh3_dsp_show_regs;
+ break;
case bfd_mach_sh4:
- sh_show_regs = sh4_show_regs;
- break;
+ sh_show_regs = sh4_show_regs;
+ break;
case bfd_mach_sh5:
sh_show_regs = sh64_show_regs;
- /* SH5 is handled entirely in sh64-tdep.c */
- return sh64_gdbarch_init (info, arches);
+ /* SH5 is handled entirely in sh64-tdep.c */
+ return sh64_gdbarch_init (info, arches);
}
/* If there is already a candidate, use it. */
@@ -2108,39 +2038,7 @@ sh_gdbarch_init (struct gdbarch_info inf
/* None found, create a new architecture from the information
provided. */
- tdep = XMALLOC (struct gdbarch_tdep);
- gdbarch = gdbarch_alloc (&info, tdep);
-
- /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
- ready to unwind the PC first (see frame.c:get_prev_frame()). */
- set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
-
- /* Initialize the register numbers that are not common to all the
- variants to -1, if necessary thse will be overwritten in the case
- statement below. */
- tdep->FPUL_REGNUM = -1;
- tdep->FPSCR_REGNUM = -1;
- tdep->DSR_REGNUM = -1;
- tdep->FP_LAST_REGNUM = -1;
- tdep->A0G_REGNUM = -1;
- tdep->A0_REGNUM = -1;
- tdep->A1G_REGNUM = -1;
- tdep->A1_REGNUM = -1;
- tdep->M0_REGNUM = -1;
- tdep->M1_REGNUM = -1;
- tdep->X0_REGNUM = -1;
- tdep->X1_REGNUM = -1;
- tdep->Y0_REGNUM = -1;
- tdep->Y1_REGNUM = -1;
- tdep->MOD_REGNUM = -1;
- tdep->RS_REGNUM = -1;
- tdep->RE_REGNUM = -1;
- tdep->SSR_REGNUM = -1;
- tdep->SPC_REGNUM = -1;
- tdep->DR0_REGNUM = -1;
- tdep->DR_LAST_REGNUM = -1;
- tdep->FV0_REGNUM = -1;
- tdep->FV_LAST_REGNUM = -1;
+ gdbarch = gdbarch_alloc (&info, NULL);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
@@ -2151,13 +2049,16 @@ sh_gdbarch_init (struct gdbarch_info inf
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_num_regs (gdbarch, SH_DEFAULT_NUM_REGS);
+ set_gdbarch_num_regs (gdbarch, SH_NUM_REGS);
set_gdbarch_sp_regnum (gdbarch, 15);
- set_gdbarch_deprecated_fp_regnum (gdbarch, 14);
set_gdbarch_pc_regnum (gdbarch, 16);
set_gdbarch_fp0_regnum (gdbarch, -1);
set_gdbarch_num_pseudo_regs (gdbarch, 0);
+ set_gdbarch_register_type (gdbarch, sh_default_register_type);
+
+ set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
+
set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc);
set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention);
@@ -2166,164 +2067,84 @@ sh_gdbarch_init (struct gdbarch_info inf
set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
+ set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
+ set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
+ set_gdbarch_extract_struct_value_address (gdbarch,
+ sh_extract_struct_value_address);
+
set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_decr_pc_after_break (gdbarch, 0);
set_gdbarch_function_start_offset (gdbarch, 0);
+ set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
+
set_gdbarch_frame_args_skip (gdbarch, 0);
- set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue);
+ set_gdbarch_frameless_function_invocation (gdbarch,
+ frameless_look_for_prologue);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
- set_gdbarch_deprecated_frame_chain (gdbarch, sh_frame_chain);
- set_gdbarch_deprecated_get_saved_register (gdbarch, deprecated_generic_get_saved_register);
- set_gdbarch_deprecated_init_extra_frame_info (gdbarch, sh_init_extra_frame_info);
- set_gdbarch_deprecated_pop_frame (gdbarch, sh_pop_frame);
- set_gdbarch_deprecated_frame_saved_pc (gdbarch, sh_frame_saved_pc);
- set_gdbarch_deprecated_saved_pc_after_call (gdbarch, sh_saved_pc_after_call);
set_gdbarch_frame_align (gdbarch, sh_frame_align);
+ set_gdbarch_unwind_sp (gdbarch, sh_unwind_sp);
+ set_gdbarch_unwind_pc (gdbarch, sh_unwind_pc);
+ set_gdbarch_unwind_dummy_id (gdbarch, sh_unwind_dummy_id);
+ frame_base_set_default (gdbarch, &sh_frame_base);
+
+ set_gdbarch_in_function_epilogue_p (gdbarch,
+ sh_in_function_epilogue_p);
switch (info.bfd_arch_info->mach)
{
case bfd_mach_sh:
set_gdbarch_register_name (gdbarch, sh_sh_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
- set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh2:
set_gdbarch_register_name (gdbarch, sh_sh_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
- set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh2e:
/* doubles on sh2e and sh3e are actually 4 byte. */
set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_register_name (gdbarch, sh_sh2e_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
set_gdbarch_fp0_regnum (gdbarch, 25);
set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh_dsp:
set_gdbarch_register_name (gdbarch, sh_sh_dsp_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
- set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh3:
set_gdbarch_register_name (gdbarch, sh_sh3_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
- set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh3e:
/* doubles on sh2e and sh3e are actually 4 byte. */
set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_register_name (gdbarch, sh_sh3e_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
set_gdbarch_fp0_regnum (gdbarch, 25);
set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
break;
+
case bfd_mach_sh3_dsp:
set_gdbarch_register_name (gdbarch, sh_sh3_dsp_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
- set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
+
case bfd_mach_sh4:
set_gdbarch_register_name (gdbarch, sh_sh4_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
set_gdbarch_register_type (gdbarch, sh_sh4_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
set_gdbarch_fp0_regnum (gdbarch, 25);
set_gdbarch_num_pseudo_regs (gdbarch, 12);
set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
@@ -2331,46 +2152,20 @@ sh_gdbarch_init (struct gdbarch_info inf
set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
- tdep->DR0_REGNUM = 59;
- tdep->DR_LAST_REGNUM = 66;
- tdep->FV0_REGNUM = 67;
- tdep->FV_LAST_REGNUM = 70;
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
break;
+
default:
set_gdbarch_register_name (gdbarch, sh_generic_register_name);
- set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
- set_gdbarch_register_type (gdbarch, sh_default_register_type);
- set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
- set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
-
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
break;
}
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
- return gdbarch;
-}
-
-static void
-sh_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (tdep == NULL)
- return;
+ frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ frame_unwind_append_sniffer (gdbarch, sh_frame_sniffer);
- /* FIXME: dump the rest of gdbarch_tdep. */
+ return gdbarch;
}
extern initialize_file_ftype _initialize_sh_tdep; /* -Wmissing-prototypes */
@@ -2380,7 +2175,7 @@ _initialize_sh_tdep (void)
{
struct cmd_list_element *c;
- gdbarch_register (bfd_arch_sh, sh_gdbarch_init, sh_dump_tdep);
+ gdbarch_register (bfd_arch_sh, sh_gdbarch_init, NULL);
add_com ("regs", class_vars, sh_show_regs_command, "Print all registers");
}
Index: sh-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/sh-tdep.h,v
retrieving revision 1.5
diff -u -p -r1.5 sh-tdep.h
--- sh-tdep.h 8 Sep 2003 11:26:20 -0000 1.5
+++ sh-tdep.h 8 Sep 2003 16:26:46 -0000
@@ -24,52 +24,51 @@
/* Contributed by Steve Chamberlain sac@cygnus.com */
-struct gdbarch_tdep
- {
- int FPUL_REGNUM; /* sh3e, sh4 */
- int FPSCR_REGNUM; /* sh3e, sh4 */
- int DSR_REGNUM; /* sh-dsp, sh3-dsp */
- int FP_LAST_REGNUM; /* sh3e, sh4 */
- int A0G_REGNUM; /* sh-dsp, sh3-dsp */
- int A0_REGNUM; /* sh-dsp, sh3-dsp */
- int A1G_REGNUM; /* sh-dsp, sh3-dsp */
- int A1_REGNUM; /* sh-dsp, sh3-dsp */
- int M0_REGNUM; /* sh-dsp, sh3-dsp */
- int M1_REGNUM; /* sh-dsp, sh3-dsp */
- int X0_REGNUM; /* sh-dsp, sh3-dsp */
- int X1_REGNUM; /* sh-dsp, sh3-dsp */
- int Y0_REGNUM; /* sh-dsp, sh3-dsp */
- int Y1_REGNUM; /* sh-dsp, sh3-dsp */
- int MOD_REGNUM; /* sh-dsp, sh3-dsp */
- int SSR_REGNUM; /* sh3, sh3-dsp, sh3e, sh4 */
- int SPC_REGNUM; /* sh3, sh3-dsp, sh3e, sh4 */
- int RS_REGNUM; /* sh-dsp, sh3-dsp */
- int RE_REGNUM; /* sh-dsp, sh3-dsp */
- int DR0_REGNUM; /* sh4 */
- int DR_LAST_REGNUM; /* sh4 */
- int FV0_REGNUM; /* sh4 */
- int FV_LAST_REGNUM; /* sh4 */
- /* FPP stands for Floating Point Pair, to avoid confusion with
- GDB's FP0_REGNUM, which is the number of the first Floating
- point register. Unfortunately on the sh5, the floating point
- registers are called FR, and the floating point pairs are called FP. */
- };
-
-/* Registers common to all the SH variants. */
+/* Registers for all SH variants. Used also by sh3-rom.c. */
enum
{
R0_REGNUM = 0,
STRUCT_RETURN_REGNUM = 2,
ARG0_REGNUM = 4,
ARGLAST_REGNUM = 7,
+ FP_REGNUM = 14,
PR_REGNUM = 17,
GBR_REGNUM = 18,
VBR_REGNUM = 19,
MACH_REGNUM = 20,
MACL_REGNUM = 21,
SR_REGNUM = 22,
+ FPUL_REGNUM = 23,
+ /* Floating point registers */
+ FPSCR_REGNUM = 24,
FLOAT_ARG0_REGNUM = 29,
- FLOAT_ARGLAST_REGNUM = 36
+ FLOAT_ARGLAST_REGNUM = 36,
+ FP_LAST_REGNUM = 40,
+ /* sh3,sh4 registers */
+ SSR_REGNUM = 41,
+ SPC_REGNUM = 42,
+ /* DSP registers */
+ DSR_REGNUM = 24,
+ A0G_REGNUM = 25,
+ A0_REGNUM = 26,
+ A1G_REGNUM = 27,
+ A1_REGNUM = 28,
+ M0_REGNUM = 29,
+ M1_REGNUM = 30,
+ X0_REGNUM = 31,
+ X1_REGNUM = 32,
+ Y0_REGNUM = 33,
+ Y1_REGNUM = 34,
+ MOD_REGNUM = 40,
+ RS_REGNUM = 43,
+ RE_REGNUM = 44,
+ R0_BANK_REGNUM = 51,
+ R7_BANK_REGNUM = 58,
+ /* Floating point pseudo registers */
+ DR0_REGNUM = 59,
+ DR_LAST_REGNUM = 66,
+ FV0_REGNUM = 67,
+ FV_LAST_REGNUM = 70
};
extern gdbarch_init_ftype sh64_gdbarch_init;
Index: sh3-rom.c
===================================================================
RCS file: /cvs/src/src/gdb/sh3-rom.c,v
retrieving revision 1.15
diff -u -p -r1.15 sh3-rom.c
--- sh3-rom.c 21 Aug 2003 20:43:10 -0000 1.15
+++ sh3-rom.c 8 Sep 2003 16:26:46 -0000
@@ -77,9 +77,9 @@ sh3_supply_register (char *regname, int
break;
case 'S':
if (regname[1] == 'S' && regname[2] == 'R')
- regno = gdbarch_tdep (current_gdbarch)->SSR_REGNUM;
+ regno = SSR_REGNUM;
else if (regname[1] == 'P' && regname[2] == 'C')
- regno = gdbarch_tdep (current_gdbarch)->SPC_REGNUM;
+ regno = SPC_REGNUM;
break;
}
}
--
Corinna Vinschen
Cygwin Developer
Red Hat, Inc.