mirror of https://github.com/xemu-project/xemu.git
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
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@ -35,6 +35,7 @@
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#define TT_NFPU_INSN 0x04
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#define TT_WIN_OVF 0x05
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#define TT_WIN_UNF 0x06
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#define TT_UNALIGNED 0x07
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#define TT_FP_EXCP 0x08
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#define TT_DFAULT 0x09
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#define TT_TOVF 0x0a
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@ -55,6 +56,7 @@
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#define TT_DFAULT 0x30
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#define TT_DMISS 0x31
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#define TT_DPROT 0x32
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#define TT_UNALIGNED 0x34
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#define TT_PRIV_ACT 0x37
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#define TT_EXTINT 0x40
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#define TT_SPILL 0x80
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@ -1486,7 +1486,10 @@ void OPPROTO op_movl_npc_im(void)
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void OPPROTO op_movl_npc_T0(void)
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{
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env->npc = T0;
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if (T0 & 0x3)
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raise_exception(TT_UNALIGNED);
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else
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env->npc = T0;
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}
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void OPPROTO op_mov_pc_npc(void)
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@ -923,7 +923,11 @@ void do_interrupt(int intno)
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#if !defined(CONFIG_USER_ONLY)
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static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
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void *retaddr);
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#define MMUSUFFIX _mmu
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#define ALIGNED_ONLY
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#define GETPC() (__builtin_return_address(0))
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#define SHIFT 0
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@ -938,6 +942,14 @@ void do_interrupt(int intno)
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#define SHIFT 3
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#include "softmmu_template.h"
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static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
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void *retaddr)
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{
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/* Uncomment the following line to enable mem_address_not_aligned traps */
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/* Not enabled yet because of bugs in OpenBIOS */
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//raise_exception(TT_UNALIGNED);
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//printf("Unaligned access to 0x%x from 0x%x\n", addr, env->pc);
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}
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/* try to fill the TLB and return an exception if error. If retaddr is
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NULL, it means that the function was called in C code (i.e. not
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@ -25,7 +25,6 @@
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Rest of V9 instructions, VIS instructions
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NPC/PC static optimisations (use JUMP_TB when possible)
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Optimize synthetic instructions
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Optional alignment check
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128-bit float
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*/
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