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-rw-r--r--lib/std/os/linux/aarch64.zig7
-rw-r--r--lib/std/os/linux/arm.zig11
-rw-r--r--lib/std/os/linux/hexagon.zig4
-rw-r--r--lib/std/os/linux/loongarch64.zig4
-rw-r--r--lib/std/os/linux/mips.zig4
-rw-r--r--lib/std/os/linux/mips64.zig4
-rw-r--r--lib/std/os/linux/powerpc.zig40
-rw-r--r--lib/std/os/linux/powerpc64.zig7
-rw-r--r--lib/std/os/linux/riscv32.zig6
-rw-r--r--lib/std/os/linux/riscv64.zig6
-rw-r--r--lib/std/os/linux/s390x.zig7
-rw-r--r--lib/std/os/linux/sparc64.zig21
-rw-r--r--lib/std/os/linux/x86.zig19
-rw-r--r--lib/std/os/linux/x86_64.zig2
14 files changed, 98 insertions, 44 deletions
diff --git a/lib/std/os/linux/aarch64.zig b/lib/std/os/linux/aarch64.zig
index 9248360ae9..db304a3a33 100644
--- a/lib/std/os/linux/aarch64.zig
+++ b/lib/std/os/linux/aarch64.zig
@@ -120,8 +120,13 @@ pub fn clone() callconv(.Naked) usize {
\\ cbz x0,1f
\\ // parent
\\ ret
+ \\
\\ // child
- \\1: ldp x1,x0,[sp],#16
+ \\1: .cfi_undefined lr
+ \\ mov fp, 0
+ \\ mov lr, 0
+ \\
+ \\ ldp x1,x0,[sp],#16
\\ blr x1
\\ mov x8,#93 // SYS_exit
\\ svc #0
diff --git a/lib/std/os/linux/arm.zig b/lib/std/os/linux/arm.zig
index 1d22b8c3db..e9263b5cea 100644
--- a/lib/std/os/linux/arm.zig
+++ b/lib/std/os/linux/arm.zig
@@ -120,11 +120,16 @@ pub fn clone() callconv(.Naked) usize {
\\ ldmfd sp!,{r4,r5,r6,r7}
\\ bx lr
\\
- \\1: mov r0,r6
+ \\ // https://github.com/llvm/llvm-project/issues/115891
+ \\1: mov r7, #0
+ \\ mov r11, #0
+ \\ mov lr, #0
+ \\
+ \\ mov r0,r6
\\ bl 3f
- \\2: mov r7,#1 // SYS_exit
+ \\ mov r7,#1 // SYS_exit
\\ svc 0
- \\ b 2b
+ \\
\\3: bx r5
);
}
diff --git a/lib/std/os/linux/hexagon.zig b/lib/std/os/linux/hexagon.zig
index e9bf9ab57c..0839ea8297 100644
--- a/lib/std/os/linux/hexagon.zig
+++ b/lib/std/os/linux/hexagon.zig
@@ -118,6 +118,10 @@ pub fn clone() callconv(.Naked) usize {
\\ p0 = cmp.eq(r0, #0)
\\ if (!p0) dealloc_return
\\
+ \\ .cfi_undefined r31
+ \\ r30 = #0
+ \\ r31 = #0
+ \\
\\ r0 = r10
\\ callr r11
\\
diff --git a/lib/std/os/linux/loongarch64.zig b/lib/std/os/linux/loongarch64.zig
index def3915494..b52f1d10b1 100644
--- a/lib/std/os/linux/loongarch64.zig
+++ b/lib/std/os/linux/loongarch64.zig
@@ -121,6 +121,10 @@ pub fn clone() callconv(.Naked) usize {
\\ beqz $a0, 1f # whether child process
\\ jirl $zero, $ra, 0 # parent process return
\\1:
+ \\ .cfi_undefined 1
+ \\ move $fp, $zero
+ \\ move $ra, $zero
+ \\
\\ ld.d $t8, $sp, 0 # function pointer
\\ ld.d $a0, $sp, 8 # argument pointer
\\ jirl $ra, $t8, 0 # call the user's function
diff --git a/lib/std/os/linux/mips.zig b/lib/std/os/linux/mips.zig
index e6cb5f7900..5d786ccde7 100644
--- a/lib/std/os/linux/mips.zig
+++ b/lib/std/os/linux/mips.zig
@@ -231,6 +231,10 @@ pub fn clone() callconv(.Naked) usize {
\\ jr $ra
\\ nop
\\1:
+ \\ .cfi_undefined $ra
+ \\ move $fp, $zero
+ \\ move $ra, $zero
+ \\
\\ lw $25, 0($sp)
\\ lw $4, 4($sp)
\\ jalr $25
diff --git a/lib/std/os/linux/mips64.zig b/lib/std/os/linux/mips64.zig
index 5e6661eae5..256c911bbe 100644
--- a/lib/std/os/linux/mips64.zig
+++ b/lib/std/os/linux/mips64.zig
@@ -210,6 +210,10 @@ pub fn clone() callconv(.Naked) usize {
\\ jr $ra
\\ nop
\\1:
+ \\ .cfi_undefined $ra
+ \\ move $fp, $zero
+ \\ move $ra, $zero
+ \\
\\ ld $25, 0($sp)
\\ ld $4, 8($sp)
\\ jalr $25
diff --git a/lib/std/os/linux/powerpc.zig b/lib/std/os/linux/powerpc.zig
index 7b56b94823..9dde326e1b 100644
--- a/lib/std/os/linux/powerpc.zig
+++ b/lib/std/os/linux/powerpc.zig
@@ -133,14 +133,14 @@ pub fn clone() callconv(.Naked) usize {
// syscall(SYS_clone, flags, stack, ptid, tls, ctid)
// 0 3, 4, 5, 6, 7
asm volatile (
- \\ # store non-volatile regs r30, r31 on stack in order to put our
+ \\ # store non-volatile regs r29, r30 on stack in order to put our
\\ # start func and its arg there
- \\ stwu 30, -16(1)
- \\ stw 31, 4(1)
+ \\ stwu 29, -16(1)
+ \\ stw 30, 4(1)
\\
- \\ # save r3 (func) into r30, and r6(arg) into r31
- \\ mr 30, 3
- \\ mr 31, 6
+ \\ # save r3 (func) into r29, and r6(arg) into r30
+ \\ mr 29, 3
+ \\ mr 30, 6
\\
\\ # create initial stack frame for new thread
\\ clrrwi 4, 4, 4
@@ -167,28 +167,28 @@ pub fn clone() callconv(.Naked) usize {
\\ # compare sc result with 0
\\ cmpwi cr7, 3, 0
\\
- \\ # if not 0, jump to end
- \\ bne cr7, 2f
+ \\ # if not 0, restore stack and return
+ \\ beq cr7, 2f
+ \\ lwz 29, 0(1)
+ \\ lwz 30, 4(1)
+ \\ addi 1, 1, 16
+ \\ blr
\\
\\ #else: we're the child
+ \\ 2:
+ \\ .cfi_undefined lr
+ \\ li 31, 0
+ \\ mtlr 0
+ \\
\\ #call funcptr: move arg (d) into r3
- \\ mr 3, 31
- \\ #move r30 (funcptr) into CTR reg
- \\ mtctr 30
+ \\ mr 3, 30
+ \\ #move r29 (funcptr) into CTR reg
+ \\ mtctr 29
\\ # call CTR reg
\\ bctrl
\\ # mov SYS_exit into r0 (the exit param is already in r3)
\\ li 0, 1
\\ sc
- \\
- \\ 2:
- \\
- \\ # restore stack
- \\ lwz 30, 0(1)
- \\ lwz 31, 4(1)
- \\ addi 1, 1, 16
- \\
- \\ blr
);
}
diff --git a/lib/std/os/linux/powerpc64.zig b/lib/std/os/linux/powerpc64.zig
index 06b67c17f1..6a1f98a65f 100644
--- a/lib/std/os/linux/powerpc64.zig
+++ b/lib/std/os/linux/powerpc64.zig
@@ -160,7 +160,12 @@ pub fn clone() callconv(.Naked) usize {
\\ cmpwi cr7, 3, 0
\\ bnelr cr7
\\
- \\ # we're the child. call fn(arg)
+ \\ # we're the child
+ \\ .cfi_undefined lr
+ \\ li 31, 0
+ \\ mtlr 0
+ \\
+ \\ # call fn(arg)
\\ ld 3, 16(1)
\\ ld 12, 8(1)
\\ mtctr 12
diff --git a/lib/std/os/linux/riscv32.zig b/lib/std/os/linux/riscv32.zig
index 457d7e50b4..dc444a1956 100644
--- a/lib/std/os/linux/riscv32.zig
+++ b/lib/std/os/linux/riscv32.zig
@@ -120,7 +120,11 @@ pub fn clone() callconv(.Naked) usize {
\\ ret
\\
\\ # Child
- \\1: lw a1, 0(sp)
+ \\1: .cfi_undefined ra
+ \\ mv fp, zero
+ \\ mv ra, zero
+ \\
+ \\ lw a1, 0(sp)
\\ lw a0, 4(sp)
\\ jalr a1
\\
diff --git a/lib/std/os/linux/riscv64.zig b/lib/std/os/linux/riscv64.zig
index e33169c5b1..45ba568c1b 100644
--- a/lib/std/os/linux/riscv64.zig
+++ b/lib/std/os/linux/riscv64.zig
@@ -120,7 +120,11 @@ pub fn clone() callconv(.Naked) usize {
\\ ret
\\
\\ # Child
- \\1: ld a1, 0(sp)
+ \\1: .cfi_undefined ra
+ \\ mv fp, zero
+ \\ mv ra, zero
+ \\
+ \\ ld a1, 0(sp)
\\ ld a0, 8(sp)
\\ jalr a1
\\
diff --git a/lib/std/os/linux/s390x.zig b/lib/std/os/linux/s390x.zig
index efc48af4ff..8fbe1c930b 100644
--- a/lib/std/os/linux/s390x.zig
+++ b/lib/std/os/linux/s390x.zig
@@ -133,7 +133,12 @@ pub fn clone() callconv(.Naked) usize {
\\ltgr %%r2, %%r2
\\bnzr %%r14
\\
- \\# we're the child. call fn(arg)
+ \\# we're the child
+ \\.cfi_undefined %%r14
+ \\lghi %%r11, 0
+ \\lghi %%r14, 0
+ \\
+ \\# call fn(arg)
\\lg %%r1, 8(%%r15)
\\lg %%r2, 16(%%r15)
\\basr %%r14, %%r1
diff --git a/lib/std/os/linux/sparc64.zig b/lib/std/os/linux/sparc64.zig
index c146ed17cf..d81e6fb40a 100644
--- a/lib/std/os/linux/sparc64.zig
+++ b/lib/std/os/linux/sparc64.zig
@@ -198,29 +198,34 @@ pub fn clone() callconv(.Naked) usize {
\\ mov %%i5, %%o3
\\ ldx [%%fp + 0x8af], %%o4
\\ t 0x6d
- \\ bcs,pn %%xcc, 2f
+ \\ bcs,pn %%xcc, 1f
\\ nop
\\ # The child pid is returned in o0 while o1 tells if this
\\ # process is # the child (=1) or the parent (=0).
- \\ brnz %%o1, 1f
+ \\ brnz %%o1, 2f
\\ nop
\\ # Parent process, return the child pid
\\ mov %%o0, %%i0
\\ ret
\\ restore
\\1:
- \\ # Child process, call func(arg)
+ \\ # The syscall failed
+ \\ sub %%g0, %%o0, %%i0
+ \\ ret
+ \\ restore
+ \\2:
+ \\ # Child process
+ \\ .cfi_undefined %%i7
+ \\ mov %%g0, %%fp
+ \\ mov %%g0, %%i7
+ \\
+ \\ # call func(arg)
\\ mov %%g0, %%fp
\\ call %%g2
\\ mov %%g3, %%o0
\\ # Exit
\\ mov 1, %%g1 // SYS_exit
\\ t 0x6d
- \\2:
- \\ # The syscall failed
- \\ sub %%g0, %%o0, %%i0
- \\ ret
- \\ restore
);
}
diff --git a/lib/std/os/linux/x86.zig b/lib/std/os/linux/x86.zig
index abcfb99b37..cb746e52a8 100644
--- a/lib/std/os/linux/x86.zig
+++ b/lib/std/os/linux/x86.zig
@@ -148,19 +148,22 @@ pub fn clone() callconv(.Naked) usize {
\\ movl $120,%%eax // SYS_clone
\\ int $128
\\ testl %%eax,%%eax
- \\ jnz 1f
- \\ popl %%eax
- \\ xorl %%ebp,%%ebp
- \\ calll *%%eax
- \\ movl %%eax,%%ebx
- \\ movl $1,%%eax // SYS_exit
- \\ int $128
- \\1:
+ \\ jz 1f
\\ popl %%edi
\\ popl %%esi
\\ popl %%ebx
\\ popl %%ebp
\\ retl
+ \\
+ \\1:
+ \\ .cfi_undefined %%eip
+ \\ xorl %%ebp,%%ebp
+ \\
+ \\ popl %%eax
+ \\ calll *%%eax
+ \\ movl %%eax,%%ebx
+ \\ movl $1,%%eax // SYS_exit
+ \\ int $128
);
}
diff --git a/lib/std/os/linux/x86_64.zig b/lib/std/os/linux/x86_64.zig
index cef15105ee..44a37345f0 100644
--- a/lib/std/os/linux/x86_64.zig
+++ b/lib/std/os/linux/x86_64.zig
@@ -116,8 +116,10 @@ pub fn clone() callconv(.Naked) usize {
\\ testq %%rax,%%rax
\\ jz 1f
\\ retq
+ \\
\\1: .cfi_undefined %%rip
\\ xorl %%ebp,%%ebp
+ \\
\\ popq %%rdi
\\ callq *%%r9
\\ movl %%eax,%%edi
generated by cgit v1.2.3 (git 2.39.1) at 2026-01-01 19:28:42 +0000