Skip to content

Add LM feature for X86 #350

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Add LM feature for X86 #350

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions include/cpuinfo_x86.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -111,6 +111,8 @@ typedef struct {

int lam : 1; // Intel Linear Address Mask
int uai : 1; // AMD Upper Address Ignore

int lm : 1;
// Make sure to update X86FeaturesEnum below if you add a field here.
} X86Features;

Expand Down Expand Up @@ -277,6 +279,7 @@ typedef enum {
X86_FS_REP_CMPSB_SCASB,
X86_LAM,
X86_UAI,
X86_LM,
X86_LAST_,
} X86FeaturesEnum;

Expand Down
4 changes: 3 additions & 1 deletion src/impl_x86__base_implementation.inl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -393,6 +393,7 @@ static void ParseCpuId(const Leaves* leaves, X86Info* info,
features->adx = IsBitSet(leaf_7.ebx, 19);
features->lzcnt = IsBitSet(leaf_80000001.ecx, 5);
features->lam = IsBitSet(leaf_7_1.eax, 26);
features->lm = IsBitSet(leaf_80000001.edx, 29);

/////////////////////////////////////////////////////////////////////////////
// The following section is devoted to Vector Extensions.
Expand Down Expand Up @@ -1998,7 +1999,8 @@ CacheInfo GetX86CacheInfo(void) {
LINE(X86_FS_REP_STOSB, fs_rep_stosb, , , ) \
LINE(X86_FS_REP_CMPSB_SCASB, fs_rep_cmpsb_scasb, , , ) \
LINE(X86_LAM, lam, , , ) \
LINE(X86_UAI, uai, , , )
LINE(X86_UAI, uai, , , ) \
LINE(X86_LM, lm, , , )
#define INTROSPECTION_PREFIX X86
#define INTROSPECTION_ENUM_PREFIX X86
#include "define_introspection.inl"
Expand Down
1 change: 1 addition & 0 deletions src/impl_x86_linux_or_android.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
features->ssse3 = CpuFeatures_StringView_HasWord(value, "ssse3", ' ');
features->sse4_1 = CpuFeatures_StringView_HasWord(value, "sse4_1", ' ');
features->sse4_2 = CpuFeatures_StringView_HasWord(value, "sse4_2", ' ');
features->lm = CpuFeatures_StringView_HasWord(value, "lm", ' ');
break;
}
CpuFeatures_CloseFile(fd);
Expand Down