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fix strict-aliasing warnings

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* linux-x86-low.c (amd64_emit_const): Call memcpy instead of
	casting pointers.
	(amd64_emit_reg, amd64_emit_int_call_1, amd64_emit_void_call_2):
	(i386_emit_const, i386_emit_reg, i386_emit_int_call_1):
	(i386_emit_void_call_2): Likewise.
This commit is contained in:
Nathan Froyd
2011-04-27 18:37:40 +00:00
parent 2484c66bef
commit b00ad6ff40
2 changed files with 19 additions and 10 deletions
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8
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,11 @@
2011-04-27 Nathan Froyd <froydnj@codesourcery.com>
* linux-x86-low.c (amd64_emit_const): Call memcpy instead of
casting pointers.
(amd64_emit_reg, amd64_emit_int_call_1, amd64_emit_void_call_2):
(i386_emit_const, i386_emit_reg, i386_emit_int_call_1):
(i386_emit_void_call_2): Likewise.
2011-04-26 Yao Qi <yao@codesourcery.com> 2011-04-26 Yao Qi <yao@codesourcery.com>
* linux-low.c: Move common macros to linux-ptrace.h. * linux-low.c: Move common macros to linux-ptrace.h.

21
gdb/gdbserver/linux-x86-low.c
View File

@ -1819,7 +1819,7 @@ amd64_emit_const (LONGEST num)
i = 0; i = 0;
buf[i++] = 0x48; buf[i++] = 0xb8; /* mov $<n>,%rax */ buf[i++] = 0x48; buf[i++] = 0xb8; /* mov $<n>,%rax */
*((LONGEST *) (&buf[i])) = num; memcpy (&buf[i], &num, sizeof (num));
i += 8; i += 8;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -1876,7 +1876,7 @@ amd64_emit_reg (int reg)
buildaddr = current_insn_ptr; buildaddr = current_insn_ptr;
i = 0; i = 0;
buf[i++] = 0xbe; /* mov $<n>,%esi */ buf[i++] = 0xbe; /* mov $<n>,%esi */
*((int *) (&buf[i])) = reg; memcpy (&buf[i], &reg, sizeof (reg));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -1959,7 +1959,7 @@ amd64_emit_int_call_1 (CORE_ADDR fn, int arg1)
buildaddr = current_insn_ptr; buildaddr = current_insn_ptr;
i = 0; i = 0;
buf[i++] = 0xbf; /* movl $<n>,%edi */ buf[i++] = 0xbf; /* movl $<n>,%edi */
*((int *) (&buf[i])) = arg1; memcpy (&buf[i], &arg1, sizeof (arg1));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -1978,7 +1978,7 @@ amd64_emit_void_call_2 (CORE_ADDR fn, int arg1)
buildaddr = current_insn_ptr; buildaddr = current_insn_ptr;
i = 0; i = 0;
buf[i++] = 0xbf; /* movl $<n>,%edi */ buf[i++] = 0xbf; /* movl $<n>,%edi */
*((int *) (&buf[i])) = arg1; memcpy (&buf[i], &arg1, sizeof (arg1));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -2301,18 +2301,19 @@ static void
i386_emit_const (LONGEST num) i386_emit_const (LONGEST num)
{ {
unsigned char buf[16]; unsigned char buf[16];
int i, hi; int i, hi, lo;
CORE_ADDR buildaddr = current_insn_ptr; CORE_ADDR buildaddr = current_insn_ptr;
i = 0; i = 0;
buf[i++] = 0xb8; /* mov $<n>,%eax */ buf[i++] = 0xb8; /* mov $<n>,%eax */
*((int *) (&buf[i])) = (num & 0xffffffff); lo = num & 0xffffffff;
memcpy (&buf[i], &lo, sizeof (lo));
i += 4; i += 4;
hi = ((num >> 32) & 0xffffffff); hi = ((num >> 32) & 0xffffffff);
if (hi) if (hi)
{ {
buf[i++] = 0xbb; /* mov $<n>,%ebx */ buf[i++] = 0xbb; /* mov $<n>,%ebx */
*((int *) (&buf[i])) = hi; memcpy (&buf[i], &hi, sizeof (hi));
i += 4; i += 4;
} }
else else
@ -2351,7 +2352,7 @@ i386_emit_reg (int reg)
buildaddr = current_insn_ptr; buildaddr = current_insn_ptr;
i = 0; i = 0;
buf[i++] = 0xb8; /* mov $<n>,%eax */ buf[i++] = 0xb8; /* mov $<n>,%eax */
*((int *) (&buf[i])) = reg; memcpy (&buf[i], &reg, sizeof (reg));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -2451,7 +2452,7 @@ i386_emit_int_call_1 (CORE_ADDR fn, int arg1)
buf[i++] = 0xc7; /* movl $<arg1>,(%esp) */ buf[i++] = 0xc7; /* movl $<arg1>,(%esp) */
buf[i++] = 0x04; buf[i++] = 0x04;
buf[i++] = 0x24; buf[i++] = 0x24;
*((int *) (&buf[i])) = arg1; memcpy (&buf[i], &arg1, sizeof (arg1));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;
@ -2486,7 +2487,7 @@ i386_emit_void_call_2 (CORE_ADDR fn, int arg1)
buf[i++] = 0xc7; /* movl $<arg1>,(%esp) */ buf[i++] = 0xc7; /* movl $<arg1>,(%esp) */
buf[i++] = 0x04; buf[i++] = 0x04;
buf[i++] = 0x24; buf[i++] = 0x24;
*((int *) (&buf[i])) = arg1; memcpy (&buf[i], &arg1, sizeof (arg1));
i += 4; i += 4;
append_insns (&buildaddr, i, buf); append_insns (&buildaddr, i, buf);
current_insn_ptr = buildaddr; current_insn_ptr = buildaddr;