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Alignment check mechanism (not fully enabled yet) (Aurelien Jarno) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2655 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-04-13 15:46:16 +00:00
parent 24be5ae3a0
commit d2889a3efc
4 changed files with 18 additions and 2 deletions
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2
target-sparc/cpu.h
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@ -35,6 +35,7 @@
#define TT_NFPU_INSN 0x04 #define TT_NFPU_INSN 0x04
#define TT_WIN_OVF 0x05 #define TT_WIN_OVF 0x05
#define TT_WIN_UNF 0x06 #define TT_WIN_UNF 0x06
#define TT_UNALIGNED 0x07
#define TT_FP_EXCP 0x08 #define TT_FP_EXCP 0x08
#define TT_DFAULT 0x09 #define TT_DFAULT 0x09
#define TT_TOVF 0x0a #define TT_TOVF 0x0a
@ -55,6 +56,7 @@
#define TT_DFAULT 0x30 #define TT_DFAULT 0x30
#define TT_DMISS 0x31 #define TT_DMISS 0x31
#define TT_DPROT 0x32 #define TT_DPROT 0x32
#define TT_UNALIGNED 0x34
#define TT_PRIV_ACT 0x37 #define TT_PRIV_ACT 0x37
#define TT_EXTINT 0x40 #define TT_EXTINT 0x40
#define TT_SPILL 0x80 #define TT_SPILL 0x80

3
target-sparc/op.c
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@ -1486,6 +1486,9 @@ void OPPROTO op_movl_npc_im(void)
void OPPROTO op_movl_npc_T0(void) void OPPROTO op_movl_npc_T0(void)
{ {
if (T0 & 0x3)
raise_exception(TT_UNALIGNED);
else
env->npc = T0; env->npc = T0;
} }

12
target-sparc/op_helper.c
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@ -923,7 +923,11 @@ void do_interrupt(int intno)
#if !defined(CONFIG_USER_ONLY) #if !defined(CONFIG_USER_ONLY)
static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
void *retaddr);
#define MMUSUFFIX _mmu #define MMUSUFFIX _mmu
#define ALIGNED_ONLY
#define GETPC() (__builtin_return_address(0)) #define GETPC() (__builtin_return_address(0))
#define SHIFT 0 #define SHIFT 0
@ -938,6 +942,14 @@ void do_interrupt(int intno)
#define SHIFT 3 #define SHIFT 3
#include "softmmu_template.h" #include "softmmu_template.h"
static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
void *retaddr)
{
/* Uncomment the following line to enable mem_address_not_aligned traps */
/* Not enabled yet because of bugs in OpenBIOS */
//raise_exception(TT_UNALIGNED);
//printf("Unaligned access to 0x%x from 0x%x\n", addr, env->pc);
}
/* try to fill the TLB and return an exception if error. If retaddr is /* try to fill the TLB and return an exception if error. If retaddr is
NULL, it means that the function was called in C code (i.e. not NULL, it means that the function was called in C code (i.e. not

1
target-sparc/translate.c
View File

@ -25,7 +25,6 @@
Rest of V9 instructions, VIS instructions Rest of V9 instructions, VIS instructions
NPC/PC static optimisations (use JUMP_TB when possible) NPC/PC static optimisations (use JUMP_TB when possible)
Optimize synthetic instructions Optimize synthetic instructions
Optional alignment check
128-bit float 128-bit float
*/ */