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* remote-mips.c (common_breakpoint): Prevent 64-bit addresses

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from being sent to 32-bit targets by masking off upper bits.
	* mips-tdep.c (heuristic_proc_start): Mask off upper 32 bits
	of PC on 32-bit targets.
	(mips16_heuristic_proc_desc): Recognize 'addiu s1,sp,n' as a
	frame setup instruction.
	(mips32_heuristic_proc_desc): Fix warning found by gcc -Wall.
	(mips16_skip_prologue): Recognize 'addiu s1,sp,n' as a valid
	prologue instruction.  Fix warnings and bugs found by gcc -Wall.
	* buildsym.c (finish_block): Improve handling of overlapping blocks;
	fixes problem on MIPS16 printing function arguments.
This commit is contained in:
Mark Alexander 1997-02-09 17:36:49 +00:00
parent 754a678408
commit 32dab60312
4 changed files with 35 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
gdb/ChangeLog
View File

@ -1,3 +1,17 @@
Sun Feb 09 09:23:26 1997 Mark Alexander <marka@cygnus.com>
* remote-mips.c (common_breakpoint): Prevent 64-bit addresses
from being sent to 32-bit targets by masking off upper bits.
* mips-tdep.c (heuristic_proc_start): Mask off upper 32 bits
of PC on 32-bit targets.
(mips16_heuristic_proc_desc): Recognize 'addiu s1,sp,n' as a
frame setup instruction.
(mips32_heuristic_proc_desc): Fix warning found by gcc -Wall.
(mips16_skip_prologue): Recognize 'addiu s1,sp,n' as a valid
prologue instruction. Fix warnings and bugs found by gcc -Wall.
* buildsym.c (finish_block): Improve handling of overlapping blocks;
fixes problem on MIPS16 printing function arguments.
Sat Feb 8 01:14:43 1997 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
* dwarf2read.c (dwarf2_linkage_name): New function to get

6
gdb/buildsym.c
View File

@ -388,8 +388,10 @@ finish_block (symbol, listhead, old_blocks, start, end, objfile)
BLOCK_END (pblock->block), BLOCK_START (block),
BLOCK_END (block));
}
BLOCK_START (pblock->block) = BLOCK_START (block);
BLOCK_END (pblock->block) = BLOCK_END (block);
if (BLOCK_START (pblock->block) < BLOCK_START (block))
BLOCK_START (pblock->block) = BLOCK_START (block);
if (BLOCK_END (pblock->block) > BLOCK_END (block))
BLOCK_END (pblock->block) = BLOCK_END (block);
}
#endif
BLOCK_SUPERBLOCK (pblock->block) = block;

21
gdb/mips-tdep.c
View File

@ -554,11 +554,14 @@ static CORE_ADDR
heuristic_proc_start(pc)
CORE_ADDR pc;
{
CORE_ADDR start_pc = pc;
CORE_ADDR fence = start_pc - heuristic_fence_post;
CORE_ADDR start_pc;
CORE_ADDR fence;
int instlen;
int seen_adjsp = 0;
pc = ADDR_BITS_REMOVE (pc);
start_pc = pc;
fence = start_pc - heuristic_fence_post;
if (start_pc == 0) return 0;
if (heuristic_fence_post == UINT_MAX
@ -743,6 +746,12 @@ mips16_heuristic_proc_desc(start_pc, limit_pc, next_frame, sp)
frame_addr = read_next_frame_reg(next_frame, 30);
PROC_FRAME_REG (&temp_proc_desc) = 17;
}
else if ((inst & 0xff00) == 0x0100) /* addiu $s1,sp,n */
{
offset = mips16_get_imm (prev_inst, inst, 8, 4, 0);
frame_addr = sp + offset;
PROC_FRAME_REG (&temp_proc_desc) = 17;
}
else if ((inst & 0xFF00) == 0xd900) /* sw reg,offset($s1) */
{
offset = mips16_get_imm (prev_inst, inst, 5, 4, 0);
@ -847,7 +856,7 @@ mips32_heuristic_proc_desc(start_pc, limit_pc, next_frame, sp)
else if (high_word == 0x27be) /* addiu $30,$sp,size */
{
/* Old gcc frame, r30 is virtual frame pointer. */
if (low_word != PROC_FRAME_OFFSET(&temp_proc_desc))
if ((long)low_word != PROC_FRAME_OFFSET(&temp_proc_desc))
frame_addr = sp + low_word;
else if (PROC_FRAME_REG (&temp_proc_desc) == SP_REGNUM)
{
@ -1699,6 +1708,7 @@ mips16_skip_prologue (pc, lenient)
{ 0xd980, 0xff80 }, /* sw $a0-$a3,n($s1) */
{ 0x6704, 0xff1c }, /* move reg,$a0-$a3 */
{ 0xe809, 0xf81f }, /* entry pseudo-op */
{ 0x0100, 0xff00 }, /* addiu $s1,$sp,n */
{ 0, 0 } /* end of table marker */
};
@ -1710,7 +1720,7 @@ mips16_skip_prologue (pc, lenient)
char buf[MIPS16_INSTLEN];
int status;
unsigned short inst;
int extend_bytes;
int extend_bytes = 0;
int prev_extend_bytes;
int i;
@ -1741,7 +1751,7 @@ mips16_skip_prologue (pc, lenient)
if ((inst & table[i].mask) == table[i].inst) /* found, get out */
break;
if (table[i].mask != 0) /* it was in table? */
continue; /* ignore it
continue; /* ignore it */
else /* non-prologue */
{
/* Return the current pc, adjusted backwards by 2 if
@ -1749,6 +1759,7 @@ mips16_skip_prologue (pc, lenient)
return pc - prev_extend_bytes;
}
}
return pc;
}
/* To skip prologues, I use this predicate. Returns either PC itself

1
gdb/remote-mips.c
View File

@ -2477,6 +2477,7 @@ common_breakpoint (cmd, addr, mask, flags)
int rpid, rerrflg, rresponse;
int nfields;
addr = ADDR_BITS_REMOVE (addr);
if (flags)
sprintf (buf, "0x0 %c 0x%s 0x%s %s", cmd, paddr_nz (addr), paddr_nz (mask),
flags);