[PATCH v3 2/3] target-i386: Use xsave structs for ext_save_area

[Eduardo Habkost <ehabkost@redhat.com>]

This doesn't introduce any change in the code, as the offsets and
struct sizes match what was present in the table. This can be
validated by the QEMU_BUILD_BUG_ON lines on target-i386/cpu.h,
which ensures the struct sizes and offsets match the existing
values in ext_save_area.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Changes series v1 -> v2
* (none)

Changes series v2 -> v3:
* Added PKRU state
---
 target-i386/cpu.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index a3de18d..c4cfedb 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -477,19 +477,26 @@ typedef struct ExtSaveArea {
 
 static const ExtSaveArea ext_save_areas[] = {
     [2] = { .feature = FEAT_1_ECX, .bits = CPUID_EXT_AVX,
-            .offset = 0x240, .size = 0x100 },
+            .offset = offsetof(X86XSaveArea, avx_state),
+            .size = sizeof(XSaveAVX) },
     [3] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
-            .offset = 0x3c0, .size = 0x40  },
+            .offset = offsetof(X86XSaveArea, bndreg_state),
+            .size = sizeof(XSaveBNDREG)  },
     [4] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
-            .offset = 0x400, .size = 0x40  },
+            .offset = offsetof(X86XSaveArea, bndcsr_state),
+            .size = sizeof(XSaveBNDCSR)  },
     [5] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
-            .offset = 0x440, .size = 0x40 },
+            .offset = offsetof(X86XSaveArea, opmask_state),
+            .size = sizeof(XSaveOpmask) },
     [6] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
-            .offset = 0x480, .size = 0x200 },
+            .offset = offsetof(X86XSaveArea, zmm_hi256_state),
+            .size = sizeof(XSaveZMM_Hi256) },
     [7] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
-            .offset = 0x680, .size = 0x400 },
+            .offset = offsetof(X86XSaveArea, hi16_zmm_state),
+            .size = sizeof(XSaveHi16_ZMM) },
     [9] = { .feature = FEAT_7_0_ECX, .bits = CPUID_7_0_ECX_PKU,
-            .offset = 0xA80, .size = 0x8 },
+            .offset = offsetof(X86XSaveArea, pkru_state),
+            .size = sizeof(XSavePKRU) },
 };
 
 const char *get_register_name_32(unsigned int reg)
-- 
2.1.0