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- Let OpenMP be usable via cosmocc
- Let libunwind be usable via cosmocc
- Make X86_HAVE(AVXVNNI) work correctly
- Avoid using MAP_GROWSDOWN on qemu-aarch64
- Introduce in6addr_any and in6addr_loopback
- Have thread stacks use MAP_GROWSDOWN by default
- Ask OpenMP to not use filesystem to manage threads
- Make NI_MAXHOST and NI_MAXSERV available w/o _GNU_SOURCE
This commit is contained in:
Justine Tunney 2024-01-29 15:45:10 -08:00
parent 5f8e9f14c1
commit 369aebfc48
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GPG key ID: BE714B4575D6E328
36 changed files with 416 additions and 80 deletions
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42
libc/nexgen32e/kcpuids.S
View file

@ -31,28 +31,38 @@
// are quite toilsome.
//
// @see www.felixcloutier.com/x86/cpuid
kCpuids:.long 0,0,0,0 # EAX=0 (Basic Processor Info)
.long 0,0,0,0 # EAX=1 (Processor Info)
.long 0,0,0,0 # EAX=2
.long 0,0,0,0 # EAX=7 (Extended Features)
.long 0,0,0,0 # EAX=0x80000001 (NexGen32e)
.long 0,0,0,0 # EAX=0x80000007 (APM)
.long 0,0,0,0 # EAX=16h (CPU Frequency)
kCpuids:.long 0,0,0,0 // EAX=0 (Basic Processor Info)
.long 0,0,0,0 // EAX=1 (Processor Info)
.long 0,0,0,0 // EAX=2
.long 0,0,0,0 // EAX=7 (Extended Features)
.long 0,0,0,0 // EAX=0x80000001 (NexGen32e)
.long 0,0,0,0 // EAX=0x80000007 (APM)
.long 0,0,0,0 // EAX=16h (CPU Frequency)
.long 0,0,0,0 // EAX=7 ECX=1 (Extended Feats)
.endobj kCpuids,globl
.previous
.init.start 201,_init_kCpuids
push %rbx
push $0
push $0x16
push $0xffffffff80000007
push $0xffffffff80000001
push $1
push $7
push $0
push $0x16
push $0
push $0xffffffff80000007
push $0
push $0xffffffff80000001
push $0
push $7
push $0
push $2
push $0
push $1
mov %rdi,%r8
xor %eax,%eax
1: xor %ecx,%ecx
xor %ecx,%ecx
1: nop
#ifdef FEATURELESS
// It's been reported that GDB reverse debugging doesn't
// understand VEX encoding. The workaround is to put:
@ -62,6 +72,7 @@ kCpuids:.long 0,0,0,0 # EAX=0 (Basic Processor Info)
// Inside your ~/.cosmo.mk file.
xor %eax,%eax
xor %ebx,%ebx
xor %ecx,%ecx
xor %edx,%edx
#else
cpuid
@ -74,10 +85,11 @@ kCpuids:.long 0,0,0,0 # EAX=0 (Basic Processor Info)
xchg %eax,%edx
stosl
2: pop %rax
test %eax,%eax # EAX = stacklist->pop()
jz 3f # EAX ≠ 0 (EOL sentinel)
cmp KCPUIDS(0H,EAX)(%r8),%al # EAX ≤ CPUID.0 max leaf
jbe 1b # CPUID too new to probe
test %eax,%eax // EAX = stacklist->pop()
jz 3f // EAX ≠ 0 (EOL sentinel)
pop %rcx // HERE WE GO AGAIN CPUID
cmp KCPUIDS(0H,EAX)(%r8),%al // EAX ≤ CPUID.0 max leaf
jbe 1b // CPUID too new to probe
add $4*4,%rdi
jmp 2b
3: nop

3
libc/nexgen32e/kcpuids.h
View file

@ -8,7 +8,8 @@
#define KCPUIDS_80000001H 4
#define KCPUIDS_80000007H 5
#define KCPUIDS_16H 6
#define KCPUIDS_LEN 7
#define KCPUIDS_7H_1H 7
#define KCPUIDS_LEN 8
#define KCPUIDS_6H -1 /* TBD: Thermal and Power Management */
#define KCPUIDS_DH -1 /* TBD: Extended state features */
#define KCPUIDS_80000008H -1 /* TBD: AMD Miscellaneous */

12
libc/nexgen32e/x86compiler.h
View file

@ -37,6 +37,18 @@
#define _X86_CC_AVXVNNI 0
#endif
#ifdef __AVXVNNIINT8__
#define _X86_CC_AVXVNNIINT8 1
#else
#define _X86_CC_AVXVNNIINT8 0
#endif
#ifdef __AVXVNNIINT16__
#define _X86_CC_AVXVNNIINT16 1
#else
#define _X86_CC_AVXVNNIINT16 0
#endif
#ifdef __AVX512F__
#define _X86_CC_AVX512F 1
#else

4
libc/nexgen32e/x86feature.h
View file

@ -28,7 +28,9 @@
#define X86_ARCH_CAPABILITIES 7H, EDX, 29, 0
#define X86_AVX 1H, ECX, 28, _X86_CC_AVX /* sandybridge c. 2012 */
#define X86_AVX2 7H, EBX, 5, _X86_CC_AVX2 /* haswell c. 2013 */
#define X86_AVXVNNI 7H, EAX, 4, _X86_CC_AVXVNNI
#define X86_AVXVNNI 7H_1H, EAX, 4, _X86_CC_AVXVNNI
#define X86_AVXVNNIINT8 7H_1H, EDX, 4, _X86_CC_AVXVNNIINT8
#define X86_AVXVNNIINT16 7H_1H, EDX, 10, _X86_CC_AVXVNNIINT16
#define X86_AVX512BW 7H, EBX, 30, 0
#define X86_AVX512CD 7H, EBX, 28, 0
#define X86_AVX512DQ 7H, EBX, 17, 0