zig

commit d1865477fb675a1bf60cbbe5c98bd12fb7cbbb8f (tree)
parent fe1ee47bd7798f63c6ce9af89b12429a95adaeca
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Thu,  4 Jun 2026 00:29:58 +0200

std.os.linux.sparc64: format inline asm a bit

Also remove a redundant frame pointer zeroing in clone().

Diffstat:
M
lib/std/os/linux/sparc64.zig
 | 
53
++++++++++++++++++++++++++---------------------------

1 file changed, 26 insertions(+), 27 deletions(-)
diff --git a/lib/std/os/linux/sparc64.zig b/lib/std/os/linux/sparc64.zig
@@ -10,9 +10,9 @@ pub fn syscall0(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
         : .{ .memory = true, .xcc = true, .o1 = true, .o2 = true, .o3 = true, .o4 = true, .o5 = true, .o7 = true });
@@ -25,9 +25,9 @@ pub fn syscall1(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -42,9 +42,9 @@ pub fn syscall2(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -61,9 +61,9 @@ pub fn syscall3(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -82,9 +82,9 @@ pub fn syscall4(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -105,9 +105,9 @@ pub fn syscall5(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -130,9 +130,9 @@ pub fn syscall6(
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ neg %%o0
-        \\ 1:
+        \\1:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(number)),
           [arg1] "{o0}" (arg1),
@@ -151,10 +151,10 @@ pub fn syscall_pipe(
         \\ mov %[arg], %%g3
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ # Return the error code
         \\ ba 2f
-        \\ neg %%o0
+        \\  neg %%o0
         \\1:
         \\ st %%o0, [%%g3+0]
         \\ st %%o1, [%%g3+4]
@@ -175,14 +175,14 @@ pub fn syscall_fork() u64 {
     return asm volatile (
         \\ t 0x6d
         \\ bcc,pt %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ ba 2f
-        \\ neg %%o0
-        \\ 1:
+        \\  neg %%o0
+        \\1:
         \\ # Clear the child's %%o0
         \\ dec %%o1
         \\ and %%o1, %%o0, %%o0
-        \\ 2:
+        \\2:
         : [ret] "={o0}" (-> u64),
         : [number] "{g1}" (@intFromEnum(SYS.fork)),
         : .{ .memory = true, .xcc = true, .o1 = true, .o2 = true, .o3 = true, .o4 = true, .o5 = true, .o7 = true });
@@ -209,20 +209,20 @@ pub fn clone() callconv(.naked) u64 {
         \\ ldx [%%fp + 0x8af], %%o4
         \\ t 0x6d
         \\ bcs,pn %%xcc, 1f
-        \\ nop
+        \\  nop
         \\ # The child pid is returned in o0 while o1 tells if this
-        \\ # process is # the child (=1) or the parent (=0).
+        \\ # process is the child (=1) or the parent (=0).
         \\ brnz %%o1, 2f
-        \\ nop
+        \\  nop
         \\ # Parent process, return the child pid
         \\ mov %%o0, %%i0
         \\ ret
-        \\ restore
+        \\  restore
         \\1:
         \\ # The syscall failed
         \\ sub %%g0, %%o0, %%i0
         \\ ret
-        \\ restore
+        \\  restore
         \\2:
         \\ # Child process
     );
@@ -234,9 +234,8 @@ pub fn clone() callconv(.naked) u64 {
         \\ mov %%g0, %%i7
         \\
         \\ # call func(arg)
-        \\ mov %%g0, %%fp
         \\ call %%g2
-        \\ mov %%g3, %%o0
+        \\  mov %%g3, %%o0
         \\ # Exit
         \\ mov 1, %%g1 // SYS_exit
         \\ t 0x6d