diff options
| author | balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-25 18:16:18 +0000 |
|---|---|---|
| committer | balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-25 18:16:18 +0000 |
| commit | 2436b61a6b386d712a1813b036921443bd1c5c39 (patch) | |
| tree | 9a4250e083f45b100f741e007f8f02301cbdbcdc /target-i386/op_helper.c | |
| parent | e737b32a3688d415c3b1f9d0a3fb2b941b1e758c (diff) | |
SYSENTER/SYSEXIT IA-32e implementation (Alexander Graf).
On Intel CPUs, sysenter and sysexit are valid in 64-bit mode. This patch
makes both 64-bit aware and enables them for Intel CPUs.
Add cpu save/load for 64-bit wide sysenter variables.
Signed-off-by: Alexander Graf <agraf@suse.de>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5318 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-i386/op_helper.c')
| -rw-r--r-- | target-i386/op_helper.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index c423ca05d4..74167f4809 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -2919,11 +2919,23 @@ void helper_sysenter(void) } env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK); cpu_x86_set_cpl(env, 0); - cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc, - 0, 0xffffffff, - DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | - DESC_S_MASK | - DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); + +#ifdef TARGET_X86_64 + if (env->hflags & HF_LMA_MASK) { + cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 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); + } else +#endif + { + cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 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, (env->sysenter_cs + 8) & 0xfffc, 0, 0xffffffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | @@ -2933,7 +2945,7 @@ void helper_sysenter(void) EIP = env->sysenter_eip; } -void helper_sysexit(void) +void helper_sysexit(int dflag) { int cpl; @@ -2942,16 +2954,32 @@ void helper_sysexit(void) raise_exception_err(EXCP0D_GPF, 0); } cpu_x86_set_cpl(env, 3); - cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, - 0, 0xffffffff, - DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | - DESC_S_MASK | (3 << DESC_DPL_SHIFT) | - DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); - cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, - 0, 0xffffffff, - DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | - DESC_S_MASK | (3 << DESC_DPL_SHIFT) | - DESC_W_MASK | DESC_A_MASK); +#ifdef TARGET_X86_64 + if (dflag == 2) { + cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) | 3, + 0, 0xffffffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | + DESC_S_MASK | (3 << DESC_DPL_SHIFT) | + DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); + cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 40) & 0xfffc) | 3, + 0, 0xffffffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | + DESC_S_MASK | (3 << DESC_DPL_SHIFT) | + DESC_W_MASK | DESC_A_MASK); + } else +#endif + { + cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, + 0, 0xffffffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | + DESC_S_MASK | (3 << DESC_DPL_SHIFT) | + DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); + cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, + 0, 0xffffffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | + DESC_S_MASK | (3 << DESC_DPL_SHIFT) | + DESC_W_MASK | DESC_A_MASK); + } ESP = ECX; EIP = EDX; #ifdef USE_KQEMU |