mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-12 20:37:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

std.Thread: Add some syscall comments to LinuxThreadImpl.ThreadCompletion.freeAndExit().

Browse Source
This commit is contained in:
Alex Rønne Petersen 2024-07-20 05:34:25 +02:00
parent b83d10214b
commit a59ab5ffa5
No known key found for this signature in database
1 changed files with 20 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
lib/std/Thread.zig
View File

@ -1082,11 +1082,11 @@ const LinuxThreadImpl = struct {
fn freeAndExit(self: *ThreadCompletion) noreturn {
switch (target.cpu.arch) {
.x86 => asm volatile (
\\ movl $91, %%eax
\\ movl $91, %%eax # SYS_munmap
\\ movl %[ptr], %%ebx
\\ movl %[len], %%ecx
\\ int $128
\\ movl $1, %%eax
\\ movl $1, %%eax # SYS_exit
\\ movl $0, %%ebx
\\ int $128
:
@ -1095,9 +1095,9 @@ const LinuxThreadImpl = struct {
: "memory"
),
.x86_64 => asm volatile (
\\ movq $11, %%rax
\\ movq $11, %%rax # SYS_munmap
\\ syscall
\\ movq $60, %%rax
\\ movq $60, %%rax # SYS_exit
\\ movq $1, %%rdi
\\ syscall
:
@ -1105,11 +1105,11 @@ const LinuxThreadImpl = struct {
[len] "{rsi}" (self.mapped.len),
),
.arm, .armeb, .thumb, .thumbeb => asm volatile (
\\ mov r7, #91
\\ mov r7, #91 // SYS_munmap
\\ mov r0, %[ptr]
\\ mov r1, %[len]
\\ svc 0
\\ mov r7, #1
\\ mov r7, #1 // SYS_exit
\\ mov r0, #0
\\ svc 0
:
@ -1118,11 +1118,11 @@ const LinuxThreadImpl = struct {
: "memory"
),
.aarch64, .aarch64_be => asm volatile (
\\ mov x8, #215
\\ mov x8, #215 // SYS_munmap
\\ mov x0, %[ptr]
\\ mov x1, %[len]
\\ svc 0
\\ mov x8, #93
\\ mov x8, #93 // SYS_exit
\\ mov x0, #0
\\ svc 0
:
@ -1132,11 +1132,11 @@ const LinuxThreadImpl = struct {
),
.mips, .mipsel => asm volatile (
\\ move $sp, $25
\\ li $2, 4091
\\ li $2, 4091 # SYS_munmap
\\ move $4, %[ptr]
\\ move $5, %[len]
\\ syscall
\\ li $2, 4001
\\ li $2, 4001 # SYS_exit
\\ li $4, 0
\\ syscall
:
@ -1145,11 +1145,11 @@ const LinuxThreadImpl = struct {
: "memory"
),
.mips64, .mips64el => asm volatile (
\\ li $2, 4091
\\ li $2, 4091 # SYS_munmap
\\ move $4, %[ptr]
\\ move $5, %[len]
\\ syscall
\\ li $2, 4001
\\ li $2, 4001 # SYS_exit
\\ li $4, 0
\\ syscall
:
@ -1158,11 +1158,11 @@ const LinuxThreadImpl = struct {
: "memory"
),
.powerpc, .powerpcle, .powerpc64, .powerpc64le => asm volatile (
\\ li 0, 91
\\ li 0, 91 # SYS_munmap
\\ mr %[ptr], 3
\\ mr %[len], 4
\\ sc
\\ li 0, 1
\\ li 0, 1 # SYS_exit
\\ li 3, 0
\\ sc
\\ blr
@ -1172,11 +1172,11 @@ const LinuxThreadImpl = struct {
: "memory"
),
.riscv32 => asm volatile (
\\ li a7, 215
\\ li a7, 215 # SYS_munmap
\\ mv a0, %[ptr]
\\ mv a1, %[len]
\\ ecall
\\ li a7, 93
\\ li a7, 93 # SYS_exit
\\ mv a0, zero
\\ ecall
:
@ -1185,11 +1185,11 @@ const LinuxThreadImpl = struct {
: "memory"
),
.riscv64 => asm volatile (
\\ li a7, 215
\\ li a7, 215 # SYS_munmap
\\ mv a0, %[ptr]
\\ mv a1, %[len]
\\ ecall
\\ li a7, 93
\\ li a7, 93 # SYS_exit
\\ mv a0, zero
\\ ecall
:
@ -1209,14 +1209,14 @@ const LinuxThreadImpl = struct {
\\ ba 1b
\\ restore
\\ 2:
\\ mov 73, %%g1
\\ mov 73, %%g1 # SYS_munmap
\\ mov %[ptr], %%o0
\\ mov %[len], %%o1
\\ # Flush register window contents to prevent background
\\ # memory access before unmapping the stack.
\\ flushw
\\ t 0x6d
\\ mov 1, %%g1
\\ mov 1, %%g1 # SYS_exit
\\ mov 1, %%o0
\\ t 0x6d
: