Revision f3f2d9be target-i386/helper.c
| b/target-i386/helper.c | ||
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*/ |
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#include "exec.h" |
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|
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//#define DEBUG_PCALL |
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|
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const uint8_t parity_table[256] = {
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| ... | ... | |
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uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2, push_size; |
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uint32_t old_cs, old_ss, old_esp, old_eip; |
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#ifdef DEBUG_PCALL |
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if (loglevel) {
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static int count; |
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fprintf(logfile, "%d: interrupt: vector=%02x error_code=%04x int=%d CS:IP=%04x:%08x CPL=%d\n", |
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count, intno, error_code, is_int, env->segs[R_CS].selector, env->eip, env->hflags & 3); |
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#if 0 |
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{
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int i; |
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uint8_t *ptr; |
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printf(" code=");
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ptr = env->segs[R_CS].base + env->eip; |
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for(i = 0; i < 16; i++) {
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printf(" %02x", ldub(ptr + i));
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} |
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printf("\n");
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} |
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#endif |
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count++; |
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} |
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#endif |
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|
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has_error_code = 0; |
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if (!is_int && !is_hw) {
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switch(intno) {
|
| ... | ... | |
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new_cs = T0; |
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new_eip = T1; |
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#ifdef DEBUG_PCALL |
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if (loglevel) {
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fprintf(logfile, "lcall %04x:%08x\n", |
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new_cs, new_eip); |
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} |
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#endif |
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if ((new_cs & 0xfffc) == 0) |
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raise_exception_err(EXCP0D_GPF, 0); |
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if (load_segment(&e1, &e2, new_cs) != 0) |
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raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
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cpl = env->hflags & HF_CPL_MASK; |
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#ifdef DEBUG_PCALL |
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if (loglevel) {
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fprintf(logfile, "desc=%08x:%08x\n", e1, e2); |
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} |
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#endif |
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if (e2 & DESC_S_MASK) {
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if (!(e2 & DESC_CS_MASK)) |
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raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| ... | ... | |
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raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc); |
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selector = e1 >> 16; |
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offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
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param_count = e2 & 0x1f; |
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if ((selector & 0xfffc) == 0) |
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raise_exception_err(EXCP0D_GPF, 0); |
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|
| ... | ... | |
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if (!(e2 & DESC_C_MASK) && dpl < cpl) {
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/* to inner priviledge */ |
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get_ss_esp_from_tss(&ss, &sp, dpl); |
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#ifdef DEBUG_PCALL |
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if (loglevel) |
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fprintf(logfile, "ss=%04x sp=%04x param_count=%d ESP=%x\n", |
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ss, sp, param_count, ESP); |
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#endif |
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if ((ss & 0xfffc) == 0) |
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raise_exception_err(EXCP0A_TSS, ss & 0xfffc); |
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if ((ss & 3) != dpl) |
| ... | ... | |
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if (!(ss_e2 & DESC_P_MASK)) |
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raise_exception_err(EXCP0A_TSS, ss & 0xfffc); |
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param_count = e2 & 0x1f; |
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push_size = ((param_count * 2) + 8) << shift; |
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old_esp = ESP; |
| ... | ... | |
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get_seg_limit(ss_e1, ss_e2), |
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ss_e2); |
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if (!(env->segs[R_SS].flags & DESC_B_MASK))
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if (!(ss_e2 & DESC_B_MASK))
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sp &= 0xffff; |
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ssp = env->segs[R_SS].base + sp; |
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if (shift) {
|
| ... | ... | |
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e2); |
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cpu_x86_set_cpl(env, dpl); |
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/* from this point, not restartable if same priviledge */ |
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if (!(env->segs[R_SS].flags & DESC_B_MASK)) |
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ESP = (ESP & 0xffff0000) | (sp & 0xffff); |
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else |
| ... | ... | |
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if (dpl < cpl || dpl < rpl) |
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return; |
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} |
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/* ok */
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CC_SRC |= CC_Z;
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} |
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|
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void helper_verw(void) |
| ... | ... | |
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if (!(e2 & DESC_W_MASK)) |
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return; |
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} |
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/* ok */
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CC_SRC |= CC_Z;
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} |
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|
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/* FPU helpers */ |
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