haraldwolff/qemu-patch-raspberry4
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x86_64 support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1371 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-04-23 17:45:43 +00:00
parent 07f4ddbf7e
commit c28e951fc7
1 changed files with 77 additions and 9 deletions
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86
kqemu.c
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@ -45,6 +45,11 @@
#include <fcntl.h>
#include "kqemu/kqemu.h"
/* compatibility stuff */
#ifndef KQEMU_RET_SYSCALL
#define KQEMU_RET_SYSCALL 0x0300 /* syscall insn */
#endif
#ifdef _WIN32
#define KQEMU_DEVICE "\\\\.\\kqemu"
#else
@ -71,6 +76,12 @@ extern uint32_t **l1_phys_map;
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) \
: "0" (index))
#ifdef __x86_64__
static int is_cpuid_supported(void)
{
return 1;
}
#else
static int is_cpuid_supported(void)
{
int v0, v1;
@ -87,6 +98,7 @@ static int is_cpuid_supported(void)
: "cc");
return (v0 != v1);
}
#endif
static void kqemu_update_cpuid(CPUState *env)
{
@ -231,8 +243,8 @@ struct fpxstate {
uint32_t mxcsr;
uint32_t mxcsr_mask;
uint8_t fpregs1[8 * 16];
uint8_t xmm_regs[8 * 16];
uint8_t dummy2[224];
uint8_t xmm_regs[16 * 16];
uint8_t dummy2[96];
};
static struct fpxstate fpx1 __attribute__((aligned(16)));
@ -308,7 +320,7 @@ static void restore_native_fp_fxrstor(CPUState *env)
fp->mxcsr = env->mxcsr;
/* XXX: check if DAZ is not available */
fp->mxcsr_mask = 0xffff;
memcpy(fp->xmm_regs, env->xmm_regs, 8 * 16);
memcpy(fp->xmm_regs, env->xmm_regs, CPU_NB_REGS * 16);
}
asm volatile ("fxrstor %0" : "=m" (*fp));
}
@ -334,7 +346,7 @@ static void save_native_fp_fxsave(CPUState *env)
}
if (env->cpuid_features & CPUID_SSE) {
env->mxcsr = fp->mxcsr;
memcpy(env->xmm_regs, fp->xmm_regs, 8 * 16);
memcpy(env->xmm_regs, fp->xmm_regs, CPU_NB_REGS * 16);
}
/* we must restore the default rounding state */
@ -343,6 +355,55 @@ static void save_native_fp_fxsave(CPUState *env)
asm volatile("fldcw %0" : : "m" (fpuc));
}
static int do_syscall(CPUState *env,
struct kqemu_cpu_state *kenv)
{
int selector;
selector = (env->star >> 32) & 0xffff;
#ifdef __x86_64__
if (env->hflags & HF_LMA_MASK) {
env->regs[R_ECX] = kenv->next_eip;
env->regs[11] = env->eflags;
cpu_x86_set_cpl(env, 0);
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_W_MASK | DESC_A_MASK);
env->eflags &= ~env->fmask;
if (env->hflags & HF_CS64_MASK)
env->eip = env->lstar;
else
env->eip = env->cstar;
} else
#endif
{
env->regs[R_ECX] = (uint32_t)kenv->next_eip;
cpu_x86_set_cpl(env, 0);
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_W_MASK | DESC_A_MASK);
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK);
env->eip = (uint32_t)env->star;
}
return 2;
}
int kqemu_cpu_exec(CPUState *env)
{
struct kqemu_cpu_state kcpu_state, *kenv = &kcpu_state;
@ -370,6 +431,9 @@ int kqemu_cpu_exec(CPUState *env)
kenv->cr3 = env->cr[3];
kenv->cr4 = env->cr[4];
kenv->a20_mask = env->a20_mask;
#ifdef __x86_64__
kenv->efer = env->efer;
#endif
if (env->dr[7] & 0xff) {
kenv->dr7 = env->dr[7];
kenv->dr0 = env->dr[0];
@ -435,17 +499,21 @@ int kqemu_cpu_exec(CPUState *env)
fprintf(logfile, "kqemu: kqemu_cpu_exec: ret=0x%x\n", ret);
}
#endif
if (ret == KQEMU_RET_SYSCALL) {
/* syscall instruction */
return do_syscall(env, kenv);
} else
if ((ret & 0xff00) == KQEMU_RET_INT) {
env->exception_index = ret & 0xff;
env->error_code = 0;
env->exception_is_int = 1;
env->exception_next_eip = kenv->next_eip;
#ifdef DEBUG
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "kqemu: interrupt v=%02x:\n",
env->exception_index);
cpu_dump_state(env, logfile, fprintf, 0);
}
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "kqemu: interrupt v=%02x:\n",
env->exception_index);
cpu_dump_state(env, logfile, fprintf, 0);
}
#endif
return 1;
} else if ((ret & 0xff00) == KQEMU_RET_EXCEPTION) {