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binutils-gdb
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Stop GDB getting confused over r29 and FP. print $r29 and info 

registers r29 gave different values.
This commit is contained in:
Andrew Cagney 1998-05-27 14:13:32 +00:00
parent fc23c14efc
commit ea45efcfe3
3 changed files with 27 additions and 8 deletions
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14
gdb/ChangeLog
View File

@ -1,3 +1,17 @@
Mon Apr 27 14:37:49 1998 Andrew Cagney <cagney@b1.cygnus.com>
* config/v850/tm-v850.h (REGISTER_BYTE): FP_REGNUM and
FP_RAW_REGNUM use the same register location.
* v850-tdep.c (v850_scan_prologue): Use FP_RAW_REGNUM instead of
FP_REGNUM.
(v850_frame_chain): Ditto.
* config/v850/tm-v850.h (REGISTER_NAMES): Add "fp".
(NUM_REGS): Update.
(FP_REGNUM): Update.
(FP_RAW_REGNUM): Define.
Mon May 25 13:31:27 1998 Keith Seitz <keiths@cygnus.com>
* remote.c (remote_open_1): If an error occurs starting the remote,

11
gdb/config/v850/tm-v850.h
View File

@ -20,7 +20,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define TARGET_BYTE_ORDER LITTLE_ENDIAN
#define NUM_REGS 65
#define NUM_REGS 66
#define REGISTER_NAMES \
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
@ -32,7 +32,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", \
"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", \
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31", \
"pc" }
\
"pc", "fp" }
#define REGISTER_BYTES (NUM_REGS * 4)
@ -51,13 +52,17 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define R12_REGNUM 12
#define SAVE2_START_REGNUM 20
#define SAVE2_END_REGNUM 29
#define FP_REGNUM 29
#define EP_REGNUM 30
#define SAVE3_START_REGNUM 31
#define SAVE3_END_REGNUM 31
#define RP_REGNUM 31
#define PS_REGNUM 37
#define PC_REGNUM 64
#define FP_REGNUM 65
#define FP_RAW_REGNUM 29
#define TARGET_READ_FP() read_register (FP_RAW_REGNUM)
#define TARGET_WRITE_FP(VAL) write_register (FP_REGNUM, (VAL))
#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int

10
gdb/v850-tdep.c
View File

@ -180,10 +180,10 @@ v850_scan_prologue (pc, pi)
pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10;
else if (insn == ((SP_REGNUM << 11) | 0x0600 | SP_REGNUM)) /* addi <imm>,sp,sp */
pi->frameoffset += read_memory_integer (current_pc + 2, 2);
else if (insn == ((FP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
else if (insn == ((FP_RAW_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
{
fp_used = 1;
pi->framereg = FP_REGNUM;
pi->framereg = FP_RAW_REGNUM;
}
else if (insn == ((R12_REGNUM << 11) | 0x0640 | R0_REGNUM)) /* movhi hi(const),r0,r12 */
@ -198,7 +198,7 @@ v850_scan_prologue (pc, pi)
ep_used = 0;
else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|| (fp_used
&& (insn & 0x07ff) == (0x0760 | FP_REGNUM))) /* st.w <reg>,<offset>[fp] */
&& (insn & 0x07ff) == (0x0760 | FP_RAW_REGNUM))) /* st.w <reg>,<offset>[fp] */
&& pifsr
&& (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM)
|| (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM)
@ -324,7 +324,7 @@ v850_frame_chain (fi)
/* First, find out who called us */
callers_pc = FRAME_SAVED_PC (fi);
/* If caller is a call-dummy, then our FP bears no relation to his FP! */
fp = v850_find_callers_reg (fi, FP_REGNUM);
fp = v850_find_callers_reg (fi, FP_RAW_REGNUM);
if (PC_IN_CALL_DUMMY(callers_pc, fp, fp))
return fp; /* caller is call-dummy: return oldest value of FP */
@ -337,7 +337,7 @@ v850_frame_chain (fi)
if (pi.start_function)
return 0; /* Don't chain beyond the start function */
if (pi.framereg == FP_REGNUM)
if (pi.framereg == FP_RAW_REGNUM)
return v850_find_callers_reg (fi, pi.framereg);
return fi->frame - pi.frameoffset;