diff options
Diffstat (limited to 'tools/arch/x86')
| -rw-r--r-- | tools/arch/x86/include/asm/inat.h | 6 | ||||
| -rw-r--r-- | tools/arch/x86/include/asm/insn.h | 7 | ||||
| -rw-r--r-- | tools/arch/x86/lib/insn.c | 4 | ||||
| -rw-r--r-- | tools/arch/x86/tools/gen-insn-attr-x86.awk | 4 |
4 files changed, 21 insertions, 0 deletions
diff --git a/tools/arch/x86/include/asm/inat.h b/tools/arch/x86/include/asm/inat.h index 2e65312cae52..253690eb3c26 100644 --- a/tools/arch/x86/include/asm/inat.h +++ b/tools/arch/x86/include/asm/inat.h @@ -81,6 +81,7 @@ #define INAT_EVEXONLY (1 << (INAT_FLAG_OFFS + 7)) #define INAT_NO_REX2 (1 << (INAT_FLAG_OFFS + 8)) #define INAT_REX2_VARIANT (1 << (INAT_FLAG_OFFS + 9)) +#define INAT_EVEX_SCALABLE (1 << (INAT_FLAG_OFFS + 10)) /* Attribute making macros for attribute tables */ #define INAT_MAKE_PREFIX(pfx) (pfx << INAT_PFX_OFFS) #define INAT_MAKE_ESCAPE(esc) (esc << INAT_ESC_OFFS) @@ -236,4 +237,9 @@ static inline int inat_must_evex(insn_attr_t attr) { return attr & INAT_EVEXONLY; } + +static inline int inat_evex_scalable(insn_attr_t attr) +{ + return attr & INAT_EVEX_SCALABLE; +} #endif diff --git a/tools/arch/x86/include/asm/insn.h b/tools/arch/x86/include/asm/insn.h index 1a7e8fc4d75a..0e5abd896ad4 100644 --- a/tools/arch/x86/include/asm/insn.h +++ b/tools/arch/x86/include/asm/insn.h @@ -215,6 +215,13 @@ static inline insn_byte_t insn_vex_p_bits(struct insn *insn) return X86_VEX_P(insn->vex_prefix.bytes[2]); } +static inline insn_byte_t insn_vex_w_bit(struct insn *insn) +{ + if (insn->vex_prefix.nbytes < 3) + return 0; + return X86_VEX_W(insn->vex_prefix.bytes[2]); +} + /* Get the last prefix id from last prefix or VEX prefix */ static inline int insn_last_prefix_id(struct insn *insn) { diff --git a/tools/arch/x86/lib/insn.c b/tools/arch/x86/lib/insn.c index f761adeb8e8c..a43b37346a22 100644 --- a/tools/arch/x86/lib/insn.c +++ b/tools/arch/x86/lib/insn.c @@ -294,6 +294,10 @@ int insn_get_opcode(struct insn *insn) m = insn_vex_m_bits(insn); p = insn_vex_p_bits(insn); insn->attr = inat_get_avx_attribute(op, m, p); + /* SCALABLE EVEX uses p bits to encode operand size */ + if (inat_evex_scalable(insn->attr) && !insn_vex_w_bit(insn) && + p == INAT_PFX_OPNDSZ) + insn->opnd_bytes = 2; if ((inat_must_evex(insn->attr) && !insn_is_evex(insn)) || (!inat_accept_vex(insn->attr) && !inat_is_group(insn->attr))) { diff --git a/tools/arch/x86/tools/gen-insn-attr-x86.awk b/tools/arch/x86/tools/gen-insn-attr-x86.awk index 3f43aa7d8fef..5770c8097f32 100644 --- a/tools/arch/x86/tools/gen-insn-attr-x86.awk +++ b/tools/arch/x86/tools/gen-insn-attr-x86.awk @@ -83,6 +83,8 @@ BEGIN { vexonly_expr = "\\(v\\)" # All opcodes with (ev) superscript supports *only* EVEX prefix evexonly_expr = "\\(ev\\)" + # (es) is the same as (ev) but also "SCALABLE" i.e. W and pp determine operand size + evex_scalable_expr = "\\(es\\)" prefix_expr = "\\(Prefix\\)" prefix_num["Operand-Size"] = "INAT_PFX_OPNDSZ" @@ -332,6 +334,8 @@ function convert_operands(count,opnd, i,j,imm,mod) # check VEX codes if (match(ext, evexonly_expr)) flags = add_flags(flags, "INAT_VEXOK | INAT_EVEXONLY") + else if (match(ext, evex_scalable_expr)) + flags = add_flags(flags, "INAT_VEXOK | INAT_EVEXONLY | INAT_EVEX_SCALABLE") else if (match(ext, vexonly_expr)) flags = add_flags(flags, "INAT_VEXOK | INAT_VEXONLY") else if (match(ext, vexok_expr) || match(opcode, vexok_opcode_expr)) |