mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-08 04:08:32 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make improvements

Browse source 
- 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
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
36 changed files with 416 additions and 80 deletions
Download patch file Download diff file Expand all files Collapse all files

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