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return code size

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@162 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-05-14 18:58:05 +00:00
parent ae22853141
commit 727d01d4f6
1 changed files with 14 additions and 8 deletions
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22
translate-i386.c
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@ -32,10 +32,6 @@
#define IN_OP_I386 #define IN_OP_I386
#include "cpu-i386.h" #include "cpu-i386.h"
#ifndef offsetof
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
/* XXX: move that elsewhere */ /* XXX: move that elsewhere */
static uint16_t *gen_opc_ptr; static uint16_t *gen_opc_ptr;
static uint32_t *gen_opparam_ptr; static uint32_t *gen_opparam_ptr;
@ -3721,10 +3717,19 @@ static uint16_t gen_opc_buf[OPC_BUF_SIZE];
static uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE]; static uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE];
/* return non zero if the very first instruction is invalid so that /* return non zero if the very first instruction is invalid so that
the virtual CPU can trigger an exception. */ the virtual CPU can trigger an exception.
'*code_size_ptr' contains the target code size including the
instruction which triggered an exception, except in case of invalid
illegal opcode. It must never exceed one target page.
'*gen_code_size_ptr' contains the size of the generated code (host
code).
*/
int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size, int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size,
int *gen_code_size_ptr, int *gen_code_size_ptr,
uint8_t *pc_start, uint8_t *cs_base, int flags) uint8_t *pc_start, uint8_t *cs_base, int flags,
int *code_size_ptr)
{ {
DisasContext dc1, *dc = &dc1; DisasContext dc1, *dc = &dc1;
uint8_t *pc_ptr; uint8_t *pc_ptr;
@ -3767,7 +3772,8 @@ int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size,
generate an exception */ generate an exception */
if (dc->tf) if (dc->tf)
break; break;
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end); } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
(pc_ptr - pc_start) < (TARGET_PAGE_SIZE - 32));
/* we must store the eflags state if it is not already done */ /* we must store the eflags state if it is not already done */
if (dc->cc_op != CC_OP_DYNAMIC) if (dc->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(dc->cc_op); gen_op_set_cc_op(dc->cc_op);
@ -3810,7 +3816,7 @@ int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size,
gen_code_size = dyngen_code(gen_code_buf, gen_opc_buf, gen_opparam_buf); gen_code_size = dyngen_code(gen_code_buf, gen_opc_buf, gen_opparam_buf);
flush_icache_range((unsigned long)gen_code_buf, (unsigned long)(gen_code_buf + gen_code_size)); flush_icache_range((unsigned long)gen_code_buf, (unsigned long)(gen_code_buf + gen_code_size));
*gen_code_size_ptr = gen_code_size; *gen_code_size_ptr = gen_code_size;
*code_size_ptr = pc_ptr - pc_start;
#ifdef DEBUG_DISAS #ifdef DEBUG_DISAS
if (loglevel) { if (loglevel) {
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr); fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);