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-rw-r--r--gdb/arc-tdep.c140
1 files changed, 77 insertions, 63 deletions
diff --git a/gdb/arc-tdep.c b/gdb/arc-tdep.c
index 16e259b..6e0cf8d 100644
--- a/gdb/arc-tdep.c
+++ b/gdb/arc-tdep.c
@@ -1,21 +1,22 @@
/* ARC target-dependent stuff.
Copyright (C) 1995, 1997 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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 "frame.h"
@@ -32,12 +33,20 @@ char *arc_cpu_type;
char *tmp_arc_cpu_type;
/* Table of cpu names. */
-struct {
- char *name;
- int value;
-} arc_cpu_type_table[] = {
- { "base", bfd_mach_arc_base },
- { NULL, 0 }
+struct
+ {
+ char *name;
+ int value;
+ }
+arc_cpu_type_table[] =
+{
+ {
+ "base", bfd_mach_arc_base
+ }
+ ,
+ {
+ NULL, 0
+ }
};
/* Used by simulator. */
@@ -81,7 +90,7 @@ static void codestream_read PARAMS ((unsigned int *, int));
static void codestream_seek PARAMS ((CORE_ADDR));
static unsigned int codestream_fill PARAMS ((int));
-#define CODESTREAM_BUFSIZ 16
+#define CODESTREAM_BUFSIZ 16
static CORE_ADDR codestream_next_addr;
static CORE_ADDR codestream_addr;
static unsigned int codestream_buf[CODESTREAM_BUFSIZ];
@@ -99,9 +108,9 @@ static int codestream_cnt;
? codestream_fill (0) \
: codestream_buf[codestream_off++])
-static unsigned int
+static unsigned int
codestream_fill (peek_flag)
- int peek_flag;
+ int peek_flag;
{
codestream_addr = codestream_next_addr;
codestream_next_addr += CODESTREAM_BUFSIZ * sizeof (codestream_buf[0]);
@@ -121,7 +130,7 @@ codestream_fill (peek_flag)
for (j = 0; j < n / 2; ++j)
tmp = p[j], p[j] = p[n - 1 - j], p[n - 1 - j] = tmp;
}
-
+
if (peek_flag)
return codestream_peek ();
else
@@ -130,7 +139,7 @@ codestream_fill (peek_flag)
static void
codestream_seek (place)
- CORE_ADDR place;
+ CORE_ADDR place;
{
codestream_next_addr = place / CODESTREAM_BUFSIZ;
codestream_next_addr *= CODESTREAM_BUFSIZ;
@@ -203,16 +212,16 @@ arc_get_frame_setup (pc)
{
insn = codestream_get ();
/* Frame may not be necessary, even though blink is saved.
- At least this is something we recognize. */
+ At least this is something we recognize. */
frame_size = 0;
}
- if ((insn & BUILD_INSN (-1, 0, -1, -1, -1)) /* st fp,[sp] */
+ if ((insn & BUILD_INSN (-1, 0, -1, -1, -1)) /* st fp,[sp] */
== BUILD_INSN (2, 0, SP_REGNUM, FP_REGNUM, 0))
- {
+ {
insn = codestream_get ();
if ((insn & BUILD_INSN (-1, -1, -1, -1, 0))
- != BUILD_INSN (12, FP_REGNUM, SP_REGNUM, SP_REGNUM, 0))
+ != BUILD_INSN (12, FP_REGNUM, SP_REGNUM, SP_REGNUM, 0))
return -1;
/* Check for stack adjustment sub sp,sp,N. */
@@ -229,7 +238,7 @@ arc_get_frame_setup (pc)
if (frame_size < 0)
return -1;
- codestream_get ();
+ codestream_get ();
/* This sequence is used to get the address of the return
buffer for a function that returns a structure. */
@@ -283,8 +292,8 @@ arc_skip_prologue (pc, frameless_p)
insn = codestream_peek ();
if ((insn & BUILD_INSN (-1, 0, -1, 0, 0))
!= BUILD_INSN (2, 0, SP_REGNUM, 0, 0))
- break; /* not st insn */
- if (! ARC_CALL_SAVED_REG (X_C (insn)))
+ break; /* not st insn */
+ if (!ARC_CALL_SAVED_REG (X_C (insn)))
break;
codestream_get ();
}
@@ -360,11 +369,11 @@ frame_find_saved_regs (fip, fsrp)
dummy_bottom = fip->frame - 4 - REGISTER_BYTES - CALL_DUMMY_LENGTH;
/* Check if the PC is in the stack, in a dummy frame. */
- if (dummy_bottom <= fip->pc && fip->pc <= fip->frame)
+ if (dummy_bottom <= fip->pc && fip->pc <= fip->frame)
{
/* all regs were saved by push_call_dummy () */
adr = fip->frame;
- for (i = 0; i < NUM_REGS; i++)
+ for (i = 0; i < NUM_REGS; i++)
{
adr -= REGISTER_RAW_SIZE (i);
fsrp->regs[i] = adr;
@@ -374,7 +383,7 @@ frame_find_saved_regs (fip, fsrp)
locals = arc_get_frame_setup (get_pc_function_start (fip->pc));
- if (locals >= 0)
+ if (locals >= 0)
{
/* Set `adr' to the value of `sp'. */
adr = fip->frame - locals;
@@ -382,9 +391,9 @@ frame_find_saved_regs (fip, fsrp)
{
insn = codestream_get ();
if ((insn & BUILD_INSN (-1, 0, -1, 0, 0))
- != BUILD_INSN (2, 0, SP_REGNUM, 0, 0))
+ != BUILD_INSN (2, 0, SP_REGNUM, 0, 0))
break;
- regnum = X_C (insn);
+ regnum = X_C (insn);
offset = X_D (insn);
fsrp->regs[regnum] = adr + offset;
}
@@ -402,7 +411,7 @@ push_dummy_frame ()
char regbuf[MAX_REGISTER_RAW_SIZE];
read_register_gen (PC_REGNUM, regbuf);
- write_memory (sp+4, regbuf, REGISTER_SIZE);
+ write_memory (sp + 4, regbuf, REGISTER_SIZE);
read_register_gen (FP_REGNUM, regbuf);
write_memory (sp, regbuf, REGISTER_SIZE);
write_register (FP_REGNUM, sp);
@@ -411,7 +420,7 @@ push_dummy_frame ()
read_register_gen (regnum, regbuf);
sp = push_bytes (sp, regbuf, REGISTER_RAW_SIZE (regnum));
}
- sp += (2*REGISTER_SIZE);
+ sp += (2 * REGISTER_SIZE);
write_register (SP_REGNUM, sp);
}
@@ -423,10 +432,10 @@ pop_frame ()
int regnum;
struct frame_saved_regs fsr;
char regbuf[MAX_REGISTER_RAW_SIZE];
-
+
fp = FRAME_FP (frame);
get_frame_saved_regs (frame, &fsr);
- for (regnum = 0; regnum < NUM_REGS; regnum++)
+ for (regnum = 0; regnum < NUM_REGS; regnum++)
{
CORE_ADDR adr;
adr = fsr.regs[regnum];
@@ -447,11 +456,12 @@ pop_frame ()
typedef enum
{
- NORMAL4, /* a normal 4 byte insn */
- NORMAL8, /* a normal 8 byte insn */
- BRANCH4, /* a 4 byte branch insn, including ones without delay slots */
- BRANCH8, /* an 8 byte branch insn, including ones with delay slots */
-} insn_type;
+ NORMAL4, /* a normal 4 byte insn */
+ NORMAL8, /* a normal 8 byte insn */
+ BRANCH4, /* a 4 byte branch insn, including ones without delay slots */
+ BRANCH8, /* an 8 byte branch insn, including ones with delay slots */
+}
+insn_type;
/* Return the type of INSN and store in TARGET the destination address of a
branch if this is one. */
@@ -466,26 +476,30 @@ get_insn_type (insn, pc, target)
switch (insn >> 27)
{
- case 0 : case 1 : case 2 : /* load/store insns */
+ case 0:
+ case 1:
+ case 2: /* load/store insns */
if (LIMM_P (X_A (insn))
|| LIMM_P (X_B (insn))
|| LIMM_P (X_C (insn)))
return NORMAL8;
return NORMAL4;
- case 4 : case 5 : case 6 : /* branch insns */
+ case 4:
+ case 5:
+ case 6: /* branch insns */
*target = pc + 4 + X_L (insn);
/* ??? It isn't clear that this is always the right answer.
- The problem occurs when the next insn is an 8 byte insn. If the
- branch is conditional there's no worry as there shouldn't be an 8
- byte insn following. The programmer may be cheating if s/he knows
- the branch will never be taken, but we don't deal with that.
- Note that the programmer is also allowed to play games by putting
- an insn with long immediate data in the delay slot and then duplicate
- the long immediate data at the branch target. Ugh! */
+ The problem occurs when the next insn is an 8 byte insn. If the
+ branch is conditional there's no worry as there shouldn't be an 8
+ byte insn following. The programmer may be cheating if s/he knows
+ the branch will never be taken, but we don't deal with that.
+ Note that the programmer is also allowed to play games by putting
+ an insn with long immediate data in the delay slot and then duplicate
+ the long immediate data at the branch target. Ugh! */
if (X_N (insn) == 0)
return BRANCH4;
return BRANCH8;
- case 7 : /* jump insns */
+ case 7: /* jump insns */
if (LIMM_P (X_B (insn)))
{
limm = read_memory_integer (pc + 4, 4);
@@ -499,7 +513,7 @@ get_insn_type (insn, pc, target)
if (X_Q (insn) == 0 && X_N (insn) == 0)
return BRANCH4;
return BRANCH8;
- default : /* arithmetic insns, etc. */
+ default: /* arithmetic insns, etc. */
if (LIMM_P (X_A (insn))
|| LIMM_P (X_B (insn))
|| LIMM_P (X_C (insn)))
@@ -518,7 +532,7 @@ get_insn_type (insn, pc, target)
void
arc_software_single_step (ignore, insert_breakpoints_p)
- enum target_signal ignore; /* sig but we don't need it */
+ enum target_signal ignore; /* sig but we don't need it */
int insert_breakpoints_p;
{
static CORE_ADDR next_pc, target;
@@ -543,10 +557,10 @@ arc_software_single_step (ignore, insert_breakpoints_p)
brktrg_p = 0;
if ((type == BRANCH4 || type == BRANCH8)
- /* Watch out for branches to the following location.
- We just stored a breakpoint there and another call to
- target_insert_breakpoint will think the real insn is the
- breakpoint we just stored there. */
+ /* Watch out for branches to the following location.
+ We just stored a breakpoint there and another call to
+ target_insert_breakpoint will think the real insn is the
+ breakpoint we just stored there. */
&& target != next_pc)
{
brktrg_p = 1;
@@ -575,7 +589,7 @@ arc_software_single_step (ignore, insert_breakpoints_p)
This routine returns true on success. */
int
-get_longjmp_target(pc)
+get_longjmp_target (pc)
CORE_ADDR *pc;
{
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
@@ -583,7 +597,7 @@ get_longjmp_target(pc)
sp = read_register (SP_REGNUM);
- if (target_read_memory (sp + SP_ARG0, /* Offset of first arg on stack */
+ if (target_read_memory (sp + SP_ARG0, /* Offset of first arg on stack */
buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
@@ -644,7 +658,7 @@ arc_set_cpu_type_command (args, from_tty)
return;
}
-
+
if (!arc_set_cpu_type (tmp_arc_cpu_type))
{
error ("Unknown cpu type `%s'.", tmp_arc_cpu_type);
generated by cgit v1.1 at 2024-11-23 11:47:28 +0000