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authorSteve Chamberlain <sac@cygnus>1994-11-24 05:59:34 +0000
committerSteve Chamberlain <sac@cygnus>1994-11-24 05:59:34 +0000
commit5f2f280941c6223d0f53a68afe1bdc10751bc3cf (patch)
tree25c4494c9a44a9f0ed5f54e4eea6ae89a1276aee /gdb/sh-tdep.c
parentd2fd61a812e28231f53812a02934de33bc2eec2d (diff)
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* remote-e7000.c (HARD_BREAKPOINTS): Reenable.
(BC_BREAKPOINTS): Disable. * sh-tdep.c (print_insn): Cope with big and little endian machines. * sh/sh.mt: Use libsim.a * sh/tm-sh.h (TARGET_BYTE_ORDER_SELECTABLE): New (BREAKPOINT): Changed to be byteorder independent.
Diffstat (limited to 'gdb/sh-tdep.c')
-rw-r--r--gdb/sh-tdep.c103
1 files changed, 54 insertions, 49 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
index 476246e..389b153 100644
--- a/gdb/sh-tdep.c
+++ b/gdb/sh-tdep.c
@@ -32,6 +32,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "dis-asm.h"
#include "../opcodes/sh-opc.h"
+
+
/* Prologue looks like
[mov.l <regs>,@-r15]...
[sts.l pr,@-r15]
@@ -60,10 +62,10 @@ sh_skip_prologue (start_pc)
while (IS_STS (w)
|| IS_PUSH (w)
|| IS_MOV_SP_FP (w)
- || IS_MOV_R3(w)
- || IS_ADD_R3SP(w)
- || IS_ADD_SP(w)
- || IS_SHLL_R3(w))
+ || IS_MOV_R3 (w)
+ || IS_ADD_R3SP (w)
+ || IS_ADD_SP (w)
+ || IS_SHLL_R3 (w))
{
start_pc += 2;
w = read_memory_integer (start_pc, 2);
@@ -83,9 +85,11 @@ print_insn (memaddr, stream)
GDB_INIT_DISASSEMBLE_INFO (info, stream);
- return print_insn_sh (memaddr, &info);
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ return print_insn_sh (memaddr, &info);
+ else
+ return print_insn_shl (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
INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
@@ -161,20 +165,20 @@ frame_find_saved_regs (fi, fsr)
}
else if (IS_MOV_R3 (insn))
{
- r3_val = (char)(insn & 0xff);
- pc+=2;
+ r3_val = (char) (insn & 0xff);
+ pc += 2;
insn = read_memory_integer (pc, 2);
}
else if (IS_SHLL_R3 (insn))
{
- r3_val <<=1;
- pc+=2;
+ r3_val <<= 1;
+ pc += 2;
insn = read_memory_integer (pc, 2);
}
else if (IS_ADD_R3SP (insn))
{
depth += -r3_val;
- pc+=2;
+ pc += 2;
insn = read_memory_integer (pc, 2);
}
else if (IS_ADD_SP (insn))
@@ -221,17 +225,18 @@ frame_find_saved_regs (fi, fsr)
{
fi->return_pc = read_register (PR_REGNUM) + 4;
}
- else {
-
- if (fsr->regs[PR_REGNUM])
- {
- fi->return_pc = read_memory_integer (fsr->regs[PR_REGNUM], 4) + 4;
- }
- else
- {
- fi->return_pc = read_register (PR_REGNUM) + 4;
- }
- }
+ else
+ {
+
+ if (fsr->regs[PR_REGNUM])
+ {
+ fi->return_pc = read_memory_integer (fsr->regs[PR_REGNUM], 4) + 4;
+ }
+ else
+ {
+ fi->return_pc = read_register (PR_REGNUM) + 4;
+ }
+ }
}
/* initialize the extra info saved in a FRAME */
@@ -269,7 +274,7 @@ pop_frame ()
}
}
- write_register (PC_REGNUM, fi->return_pc);
+ write_register (PC_REGNUM, frame->return_pc);
write_register (SP_REGNUM, fp + 4);
flush_cached_frames ();
}
@@ -281,31 +286,31 @@ show_regs (args, from_tty)
char *args;
int from_tty;
{
- printf_filtered("PC=%08x SR=%08x PR=%08x MACH=%08x MACHL=%08x\n",
- read_register(PC_REGNUM),
- read_register(SR_REGNUM),
- read_register(PR_REGNUM),
- read_register(MACH_REGNUM),
- read_register(MACL_REGNUM));
-
- printf_filtered("R0-R7 %08x %08x %08x %08x %08x %08x %08x %08x\n",
- read_register(0),
- read_register(1),
- read_register(2),
- read_register(3),
- read_register(4),
- read_register(5),
- read_register(6),
- read_register(7));
- printf_filtered("R8-R15 %08x %08x %08x %08x %08x %08x %08x %08x\n",
- read_register(8),
- read_register(9),
- read_register(10),
- read_register(11),
- read_register(12),
- read_register(13),
- read_register(14),
- read_register(15));
+ printf_filtered ("PC=%08x SR=%08x PR=%08x MACH=%08x MACHL=%08x\n",
+ read_register (PC_REGNUM),
+ read_register (SR_REGNUM),
+ read_register (PR_REGNUM),
+ read_register (MACH_REGNUM),
+ read_register (MACL_REGNUM));
+
+ printf_filtered ("R0-R7 %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ read_register (0),
+ read_register (1),
+ read_register (2),
+ read_register (3),
+ read_register (4),
+ read_register (5),
+ read_register (6),
+ read_register (7));
+ printf_filtered ("R8-R15 %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ read_register (8),
+ read_register (9),
+ read_register (10),
+ read_register (11),
+ read_register (12),
+ read_register (13),
+ read_register (14),
+ read_register (15));
}
@@ -320,5 +325,5 @@ _initialize_sh_tdep ()
"Set simulated memory size of simulator target.", &setlist),
&showlist);
- add_com("regs", class_vars, show_regs, "Print all registers");
+ add_com ("regs", class_vars, show_regs, "Print all registers");
}