Instead of using offset macros and bit operations in a uint32_t
array, use the X86XSaveArea struct to perform the loading/saving
operations in kvm_put_xsave() and kvm_get_xsave().
Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
target-i386/kvm.c | 144 ++++++++++++++++++++----------------------------------
1 file changed, 52 insertions(+), 92 deletions(-)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index ee6c213..5e7ec70 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1203,50 +1203,11 @@ static int kvm_put_fpu(X86CPU *cpu)
return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_FPU, &fpu);
}
-#define XSAVE_FCW_FSW 0
-#define XSAVE_FTW_FOP 1
-#define XSAVE_CWD_RIP 2
-#define XSAVE_CWD_RDP 4
-#define XSAVE_MXCSR 6
-#define XSAVE_ST_SPACE 8
-#define XSAVE_XMM_SPACE 40
-#define XSAVE_XSTATE_BV 128
-#define XSAVE_YMMH_SPACE 144
-#define XSAVE_BNDREGS 240
-#define XSAVE_BNDCSR 256
-#define XSAVE_OPMASK 272
-#define XSAVE_ZMM_Hi256 288
-#define XSAVE_Hi16_ZMM 416
-
-#define XSAVE_BYTE_OFFSET(word_offset) \
- ((word_offset)*sizeof(((struct kvm_xsave*)0)->region[0]))
-
-#define ASSERT_OFFSET(word_offset, field) \
- QEMU_BUILD_BUG_ON(XSAVE_BYTE_OFFSET(word_offset) != \
- offsetof(X86XSaveArea, field))
-
-ASSERT_OFFSET(XSAVE_FCW_FSW, legacy.fcw);
-ASSERT_OFFSET(XSAVE_FTW_FOP, legacy.ftw);
-ASSERT_OFFSET(XSAVE_CWD_RIP, legacy.fpip);
-ASSERT_OFFSET(XSAVE_CWD_RDP, legacy.fpdp);
-ASSERT_OFFSET(XSAVE_MXCSR, legacy.mxcsr);
-ASSERT_OFFSET(XSAVE_ST_SPACE, legacy.fpregs);
-ASSERT_OFFSET(XSAVE_XMM_SPACE, legacy.xmm_regs);
-ASSERT_OFFSET(XSAVE_XSTATE_BV, header.xstate_bv);
-ASSERT_OFFSET(XSAVE_YMMH_SPACE, avx_state);
-ASSERT_OFFSET(XSAVE_BNDREGS, bndreg_state);
-ASSERT_OFFSET(XSAVE_BNDCSR, bndcsr_state);
-ASSERT_OFFSET(XSAVE_OPMASK, opmask_state);
-ASSERT_OFFSET(XSAVE_ZMM_Hi256, zmm_hi256_state);
-ASSERT_OFFSET(XSAVE_Hi16_ZMM, hi16_zmm_state);
-
-
static int kvm_put_xsave(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
- struct kvm_xsave* xsave = env->kvm_xsave_buf;
+ X86XSaveArea *xsave = env->kvm_xsave_buf;
uint16_t cwd, swd, twd;
- uint8_t *xmm, *ymmh, *zmmh;
int i, r;
if (!has_xsave) {
@@ -1261,37 +1222,38 @@ static int kvm_put_xsave(X86CPU *cpu)
for (i = 0; i < 8; ++i) {
twd |= (!env->fptags[i]) << i;
}
- xsave->region[XSAVE_FCW_FSW] = (uint32_t)(swd << 16) + cwd;
- xsave->region[XSAVE_FTW_FOP] = (uint32_t)(env->fpop << 16) + twd;
- memcpy(&xsave->region[XSAVE_CWD_RIP], &env->fpip, sizeof(env->fpip));
- memcpy(&xsave->region[XSAVE_CWD_RDP], &env->fpdp, sizeof(env->fpdp));
- memcpy(&xsave->region[XSAVE_ST_SPACE], env->fpregs,
+ xsave->legacy.fcw = cwd;
+ xsave->legacy.fsw = swd;
+ xsave->legacy.ftw = twd;
+ xsave->legacy.fpop = env->fpop;
+ xsave->legacy.fpip = env->fpip;
+ xsave->legacy.fpdp = env->fpdp;
+ memcpy(&xsave->legacy.fpregs, env->fpregs,
sizeof env->fpregs);
- xsave->region[XSAVE_MXCSR] = env->mxcsr;
- *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV] = env->xstate_bv;
- memcpy(&xsave->region[XSAVE_BNDREGS], env->bnd_regs,
+ xsave->legacy.mxcsr = env->mxcsr;
+ xsave->header.xstate_bv = env->xstate_bv;
+ memcpy(&xsave->bndreg_state.bnd_regs, env->bnd_regs,
sizeof env->bnd_regs);
- memcpy(&xsave->region[XSAVE_BNDCSR], &env->bndcs_regs,
- sizeof(env->bndcs_regs));
- memcpy(&xsave->region[XSAVE_OPMASK], env->opmask_regs,
+ xsave->bndcsr_state.bndcsr = env->bndcs_regs;
+ memcpy(&xsave->opmask_state.opmask_regs, env->opmask_regs,
sizeof env->opmask_regs);
- xmm = (uint8_t *)&xsave->region[XSAVE_XMM_SPACE];
- ymmh = (uint8_t *)&xsave->region[XSAVE_YMMH_SPACE];
- zmmh = (uint8_t *)&xsave->region[XSAVE_ZMM_Hi256];
- for (i = 0; i < CPU_NB_REGS; i++, xmm += 16, ymmh += 16, zmmh += 32) {
- stq_p(xmm, env->xmm_regs[i].XMM_Q(0));
- stq_p(xmm+8, env->xmm_regs[i].XMM_Q(1));
- stq_p(ymmh, env->xmm_regs[i].XMM_Q(2));
- stq_p(ymmh+8, env->xmm_regs[i].XMM_Q(3));
- stq_p(zmmh, env->xmm_regs[i].XMM_Q(4));
- stq_p(zmmh+8, env->xmm_regs[i].XMM_Q(5));
- stq_p(zmmh+16, env->xmm_regs[i].XMM_Q(6));
- stq_p(zmmh+24, env->xmm_regs[i].XMM_Q(7));
+ for (i = 0; i < CPU_NB_REGS; i++) {
+ X86LegacyXSaveArea *legacy = &xsave->legacy;
+ XSaveAVX *avx = &xsave->avx_state;
+ XSaveZMM_Hi256 *zmm_hi256 = &xsave->zmm_hi256_state;
+ stq_p(&legacy->xmm_regs[i][0], env->xmm_regs[i].XMM_Q(0));
+ stq_p(&legacy->xmm_regs[i][1], env->xmm_regs[i].XMM_Q(1));
+ stq_p(&avx->ymmh[i][0], env->xmm_regs[i].XMM_Q(2));
+ stq_p(&avx->ymmh[i][1], env->xmm_regs[i].XMM_Q(3));
+ stq_p(&zmm_hi256->zmm_hi256[i][0], env->xmm_regs[i].XMM_Q(4));
+ stq_p(&zmm_hi256->zmm_hi256[i][1], env->xmm_regs[i].XMM_Q(5));
+ stq_p(&zmm_hi256->zmm_hi256[i][2], env->xmm_regs[i].XMM_Q(6));
+ stq_p(&zmm_hi256->zmm_hi256[i][3], env->xmm_regs[i].XMM_Q(7));
}
#ifdef TARGET_X86_64
- memcpy(&xsave->region[XSAVE_Hi16_ZMM], &env->xmm_regs[16],
+ memcpy(&xsave->hi16_zmm_state.hi16_zmm, &env->xmm_regs[16],
16 * sizeof env->xmm_regs[16]);
#endif
r = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_XSAVE, xsave);
@@ -1627,9 +1589,8 @@ static int kvm_get_fpu(X86CPU *cpu)
static int kvm_get_xsave(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
- struct kvm_xsave* xsave = env->kvm_xsave_buf;
+ X86XSaveArea *xsave = env->kvm_xsave_buf;
int ret, i;
- const uint8_t *xmm, *ymmh, *zmmh;
uint16_t cwd, swd, twd;
if (!has_xsave) {
@@ -1641,45 +1602,44 @@ static int kvm_get_xsave(X86CPU *cpu)
return ret;
}
- cwd = (uint16_t)xsave->region[XSAVE_FCW_FSW];
- swd = (uint16_t)(xsave->region[XSAVE_FCW_FSW] >> 16);
- twd = (uint16_t)xsave->region[XSAVE_FTW_FOP];
- env->fpop = (uint16_t)(xsave->region[XSAVE_FTW_FOP] >> 16);
+ cwd = xsave->legacy.fcw;
+ swd = xsave->legacy.fsw;
+ twd = xsave->legacy.ftw;
+ env->fpop = xsave->legacy.fpop;
env->fpstt = (swd >> 11) & 7;
env->fpus = swd;
env->fpuc = cwd;
for (i = 0; i < 8; ++i) {
env->fptags[i] = !((twd >> i) & 1);
}
- memcpy(&env->fpip, &xsave->region[XSAVE_CWD_RIP], sizeof(env->fpip));
- memcpy(&env->fpdp, &xsave->region[XSAVE_CWD_RDP], sizeof(env->fpdp));
- env->mxcsr = xsave->region[XSAVE_MXCSR];
- memcpy(env->fpregs, &xsave->region[XSAVE_ST_SPACE],
+ env->fpip = xsave->legacy.fpip;
+ env->fpdp = xsave->legacy.fpdp;
+ env->mxcsr = xsave->legacy.mxcsr;
+ memcpy(env->fpregs, &xsave->legacy.fpregs,
sizeof env->fpregs);
- env->xstate_bv = *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV];
- memcpy(env->bnd_regs, &xsave->region[XSAVE_BNDREGS],
+ env->xstate_bv = xsave->header.xstate_bv;
+ memcpy(env->bnd_regs, &xsave->bndreg_state.bnd_regs,
sizeof env->bnd_regs);
- memcpy(&env->bndcs_regs, &xsave->region[XSAVE_BNDCSR],
- sizeof(env->bndcs_regs));
- memcpy(env->opmask_regs, &xsave->region[XSAVE_OPMASK],
+ env->bndcs_regs = xsave->bndcsr_state.bndcsr;
+ memcpy(env->opmask_regs, &xsave->opmask_state.opmask_regs,
sizeof env->opmask_regs);
- xmm = (const uint8_t *)&xsave->region[XSAVE_XMM_SPACE];
- ymmh = (const uint8_t *)&xsave->region[XSAVE_YMMH_SPACE];
- zmmh = (const uint8_t *)&xsave->region[XSAVE_ZMM_Hi256];
- for (i = 0; i < CPU_NB_REGS; i++, xmm += 16, ymmh += 16, zmmh += 32) {
- env->xmm_regs[i].XMM_Q(0) = ldq_p(xmm);
- env->xmm_regs[i].XMM_Q(1) = ldq_p(xmm+8);
- env->xmm_regs[i].XMM_Q(2) = ldq_p(ymmh);
- env->xmm_regs[i].XMM_Q(3) = ldq_p(ymmh+8);
- env->xmm_regs[i].XMM_Q(4) = ldq_p(zmmh);
- env->xmm_regs[i].XMM_Q(5) = ldq_p(zmmh+8);
- env->xmm_regs[i].XMM_Q(6) = ldq_p(zmmh+16);
- env->xmm_regs[i].XMM_Q(7) = ldq_p(zmmh+24);
+ for (i = 0; i < CPU_NB_REGS; i++) {
+ X86LegacyXSaveArea *legacy = &xsave->legacy;
+ XSaveAVX *avx = &xsave->avx_state;
+ XSaveZMM_Hi256 *zmm_hi256 = &xsave->zmm_hi256_state;
+ env->xmm_regs[i].XMM_Q(0) = ldq_p(&legacy->xmm_regs[i][0]);
+ env->xmm_regs[i].XMM_Q(1) = ldq_p(&legacy->xmm_regs[i][1]);
+ env->xmm_regs[i].XMM_Q(2) = ldq_p(&avx->ymmh[i][0]);
+ env->xmm_regs[i].XMM_Q(3) = ldq_p(&avx->ymmh[i][1]);
+ env->xmm_regs[i].XMM_Q(4) = ldq_p(&zmm_hi256->zmm_hi256[i][0]);
+ env->xmm_regs[i].XMM_Q(5) = ldq_p(&zmm_hi256->zmm_hi256[i][1]);
+ env->xmm_regs[i].XMM_Q(6) = ldq_p(&zmm_hi256->zmm_hi256[i][2]);
+ env->xmm_regs[i].XMM_Q(7) = ldq_p(&zmm_hi256->zmm_hi256[i][3]);
}
#ifdef TARGET_X86_64
- memcpy(&env->xmm_regs[16], &xsave->region[XSAVE_Hi16_ZMM],
+ memcpy(&env->xmm_regs[16], &xsave->hi16_zmm_state.hi16_zmm,
16 * sizeof env->xmm_regs[16]);
#endif
return 0;
--
2.1.0
--
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