==> /tmp/pcpu_demo.before.amd64.clang.disas <==

./usr/src/freebsd-branches/main-push/amd64.amd64/sys/GENERIC/pcpu_demo.o:	file format elf64-x86-64

Disassembly of section .text:

0000000000000000 <pcpu_demo_get_pcpu>:
       0: 55                           	pushq	%rbp
       1: 48 89 e5                     	movq	%rsp, %rbp
       4: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
       d: 5d                           	popq	%rbp
       e: c3                           	retq
       f: 90                           	nop

0000000000000010 <pcpu_demo_get>:
      10: 55                           	pushq	%rbp
      11: 48 89 e5                     	movq	%rsp, %rbp
      14: 65 8b 04 25 3c 00 00 00      	movl	%gs:0x3c, %eax
      1c: 5d                           	popq	%rbp
      1d: c3                           	retq
      1e: 66 90                        	nop

0000000000000020 <pcpu_demo_add>:
      20: 55                           	pushq	%rbp
      21: 48 89 e5                     	movq	%rsp, %rbp
      24: 65 01 3c 25 3c 00 00 00      	addl	%edi, %gs:0x3c
      2c: 5d                           	popq	%rbp
      2d: c3                           	retq
      2e: 66 90                        	nop

0000000000000030 <pcpu_demo_set>:
      30: 55                           	pushq	%rbp
      31: 48 89 e5                     	movq	%rsp, %rbp
      34: 65 89 3c 25 3c 00 00 00      	movl	%edi, %gs:0x3c
      3c: 5d                           	popq	%rbp
      3d: c3                           	retq
      3e: 66 90                        	nop

0000000000000040 <pcpu_demo_ptr>:
      40: 55                           	pushq	%rbp
      41: 48 89 e5                     	movq	%rsp, %rbp
      44: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      4d: 48 83 c0 3c                  	addq	$0x3c, %rax
      51: 5d                           	popq	%rbp
      52: c3                           	retq
      53: 66 66 66 66 2e 0f 1f 84 00 00 00 00 00       	nopw	%cs:(%rax,%rax)

0000000000000060 <pcpu_demo_ptr_get>:
      60: 55                           	pushq	%rbp
      61: 48 89 e5                     	movq	%rsp, %rbp
      64: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      6d: 48 83 c0 3c                  	addq	$0x3c, %rax
      71: 8b 00                        	movl	(%rax), %eax
      73: 5d                           	popq	%rbp
      74: c3                           	retq
      75: 66 66 2e 0f 1f 84 00 00 00 00 00     	nopw	%cs:(%rax,%rax)

0000000000000080 <pcpu_demo_ptr_set>:
      80: 55                           	pushq	%rbp
      81: 48 89 e5                     	movq	%rsp, %rbp
      84: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      8d: 48 83 c0 3c                  	addq	$0x3c, %rax
      91: 89 38                        	movl	%edi, (%rax)
      93: 5d                           	popq	%rbp
      94: c3                           	retq
      95: 66 66 2e 0f 1f 84 00 00 00 00 00     	nopw	%cs:(%rax,%rax)

00000000000000a0 <pcpu_demo_curthread>:
      a0: 55                           	pushq	%rbp
      a1: 48 89 e5                     	movq	%rsp, %rbp
      a4: 65 48 8b 04 25 00 00 00 00   	movq	%gs:0x0, %rax
      ad: 5d                           	popq	%rbp
      ae: c3                           	retq
      af: 90                           	nop

00000000000000b0 <pcpu_demo_curpcb>:
      b0: 55                           	pushq	%rbp
      b1: 48 89 e5                     	movq	%rsp, %rbp
      b4: 65 48 8b 04 25 00 00 00 00   	movq	%gs:0x0, %rax
      bd: 48 05 20 05 00 00            	addq	$0x520, %rax            # imm = 0x520
      c3: 5d                           	popq	%rbp
      c4: c3                           	retq

==> /tmp/pcpu_demo.before.amd64.gcc.disas <==

./gcc13/usr/src/freebsd-branches/main-push/amd64.amd64/sys/GENERIC/pcpu_demo.o:	file format elf64-x86-64

Disassembly of section .text:

0000000000000000 <pcpu_demo_get_pcpu>:
       0: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
       9: c3                           	retq
       a: 66 0f 1f 44 00 00            	nopw	(%rax,%rax)

0000000000000010 <pcpu_demo_get>:
      10: 65 8b 04 25 3c 00 00 00      	movl	%gs:0x3c, %eax
      18: c3                           	retq
      19: 0f 1f 80 00 00 00 00         	nopl	(%rax)

0000000000000020 <pcpu_demo_add>:
      20: 65 01 3c 25 3c 00 00 00      	addl	%edi, %gs:0x3c
      28: c3                           	retq
      29: 0f 1f 80 00 00 00 00         	nopl	(%rax)

0000000000000030 <pcpu_demo_set>:
      30: 65 89 3c 25 3c 00 00 00      	movl	%edi, %gs:0x3c
      38: c3                           	retq
      39: 0f 1f 80 00 00 00 00         	nopl	(%rax)

0000000000000040 <pcpu_demo_ptr>:
      40: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      49: 48 83 c0 3c                  	addq	$0x3c, %rax
      4d: c3                           	retq
      4e: 66 90                        	nop

0000000000000050 <pcpu_demo_ptr_get>:
      50: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      59: 48 83 c0 3c                  	addq	$0x3c, %rax
      5d: 8b 00                        	movl	(%rax), %eax
      5f: c3                           	retq

0000000000000060 <pcpu_demo_ptr_set>:
      60: 65 48 8b 04 25 80 01 00 00   	movq	%gs:0x180, %rax
      69: 48 83 c0 3c                  	addq	$0x3c, %rax
      6d: 89 38                        	movl	%edi, (%rax)
      6f: c3                           	retq

0000000000000070 <pcpu_demo_curthread>:
      70: 65 48 8b 04 25 00 00 00 00   	movq	%gs:0x0, %rax
      79: c3                           	retq
      7a: 66 0f 1f 44 00 00            	nopw	(%rax,%rax)

0000000000000080 <pcpu_demo_curpcb>:
      80: 65 48 8b 04 25 00 00 00 00   	movq	%gs:0x0, %rax
      89: 48 05 20 05 00 00            	addq	$0x520, %rax            # imm = 0x520
      8f: c3                           	retq

==> /tmp/pcpu_demo.before.i386.clang.disas <==

./usr/src/freebsd-branches/main-push/i386.i386/sys/GENERIC/pcpu_demo.o:	file format elf32-i386

Disassembly of section .text:

00000000 <pcpu_demo_get_pcpu>:
       0: 55                           	pushl	%ebp
       1: 89 e5                        	movl	%esp, %ebp
       3: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
       9: 5d                           	popl	%ebp
       a: c3                           	retl
       b: 90                           	nop
       c: 90                           	nop
       d: 90                           	nop
       e: 90                           	nop
       f: 90                           	nop

00000010 <pcpu_demo_get>:
      10: 55                           	pushl	%ebp
      11: 89 e5                        	movl	%esp, %ebp
      13: 64 a1 24 00 00 00            	movl	%fs:0x24, %eax
      19: 5d                           	popl	%ebp
      1a: c3                           	retl
      1b: 90                           	nop
      1c: 90                           	nop
      1d: 90                           	nop
      1e: 90                           	nop
      1f: 90                           	nop

00000020 <pcpu_demo_add>:
      20: 55                           	pushl	%ebp
      21: 89 e5                        	movl	%esp, %ebp
      23: 8b 45 08                     	movl	0x8(%ebp), %eax
      26: 64 01 05 24 00 00 00         	addl	%eax, %fs:0x24
      2d: 5d                           	popl	%ebp
      2e: c3                           	retl
      2f: 90                           	nop

00000030 <pcpu_demo_set>:
      30: 55                           	pushl	%ebp
      31: 89 e5                        	movl	%esp, %ebp
      33: 8b 45 08                     	movl	0x8(%ebp), %eax
      36: 64 a3 24 00 00 00            	movl	%eax, %fs:0x24
      3c: 5d                           	popl	%ebp
      3d: c3                           	retl
      3e: 90                           	nop
      3f: 90                           	nop

00000040 <pcpu_demo_ptr>:
      40: 55                           	pushl	%ebp
      41: 89 e5                        	movl	%esp, %ebp
      43: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
      49: 83 c0 24                     	addl	$0x24, %eax
      4c: 5d                           	popl	%ebp
      4d: c3                           	retl
      4e: 90                           	nop
      4f: 90                           	nop

00000050 <pcpu_demo_ptr_get>:
      50: 55                           	pushl	%ebp
      51: 89 e5                        	movl	%esp, %ebp
      53: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
      59: 83 c0 24                     	addl	$0x24, %eax
      5c: 8b 00                        	movl	(%eax), %eax
      5e: 5d                           	popl	%ebp
      5f: c3                           	retl

00000060 <pcpu_demo_ptr_set>:
      60: 55                           	pushl	%ebp
      61: 89 e5                        	movl	%esp, %ebp
      63: 8b 45 08                     	movl	0x8(%ebp), %eax
      66: 64 8b 0d 00 01 00 00         	movl	%fs:0x100, %ecx
      6d: 83 c1 24                     	addl	$0x24, %ecx
      70: 89 01                        	movl	%eax, (%ecx)
      72: 5d                           	popl	%ebp
      73: c3                           	retl
      74: 90                           	nop
      75: 90                           	nop
      76: 90                           	nop
      77: 90                           	nop
      78: 90                           	nop
      79: 90                           	nop
      7a: 90                           	nop
      7b: 90                           	nop
      7c: 90                           	nop
      7d: 90                           	nop
      7e: 90                           	nop
      7f: 90                           	nop

00000080 <pcpu_demo_curthread>:
      80: 55                           	pushl	%ebp
      81: 89 e5                        	movl	%esp, %ebp
      83: 64 a1 00 00 00 00            	movl	%fs:0x0, %eax
      89: 5d                           	popl	%ebp
      8a: c3                           	retl
      8b: 90                           	nop
      8c: 90                           	nop
      8d: 90                           	nop
      8e: 90                           	nop
      8f: 90                           	nop

00000090 <pcpu_demo_curpcb>:
      90: 55                           	pushl	%ebp
      91: 89 e5                        	movl	%esp, %ebp
      93: 64 a1 10 00 00 00            	movl	%fs:0x10, %eax
      99: 5d                           	popl	%ebp
      9a: c3                           	retl

==> /tmp/pcpu_demo.before.i386.gcc.disas <==

./gcc13/usr/src/freebsd-branches/main-push/i386.i386/sys/GENERIC/pcpu_demo.o:	file format elf32-i386

Disassembly of section .text:

00000000 <pcpu_demo_get_pcpu>:
       0: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
       6: c3                           	retl
       7: 8d b4 26 00 00 00 00         	leal	(%esi,%eiz), %esi
       e: 66 90                        	nop

00000010 <pcpu_demo_get>:
      10: 64 a1 24 00 00 00            	movl	%fs:0x24, %eax
      16: c3                           	retl
      17: 8d b4 26 00 00 00 00         	leal	(%esi,%eiz), %esi
      1e: 66 90                        	nop

00000020 <pcpu_demo_add>:
      20: 55                           	pushl	%ebp
      21: 89 e5                        	movl	%esp, %ebp
      23: 8b 45 08                     	movl	0x8(%ebp), %eax
      26: 64 01 05 24 00 00 00         	addl	%eax, %fs:0x24
      2d: 5d                           	popl	%ebp
      2e: c3                           	retl
      2f: 90                           	nop

00000030 <pcpu_demo_set>:
      30: 55                           	pushl	%ebp
      31: 89 e5                        	movl	%esp, %ebp
      33: 8b 45 08                     	movl	0x8(%ebp), %eax
      36: 64 a3 24 00 00 00            	movl	%eax, %fs:0x24
      3c: 5d                           	popl	%ebp
      3d: c3                           	retl
      3e: 66 90                        	nop

00000040 <pcpu_demo_ptr>:
      40: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
      46: 83 c0 24                     	addl	$0x24, %eax
      49: c3                           	retl
      4a: 8d b6 00 00 00 00            	leal	(%esi), %esi

00000050 <pcpu_demo_ptr_get>:
      50: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
      56: 83 c0 24                     	addl	$0x24, %eax
      59: 8b 00                        	movl	(%eax), %eax
      5b: c3                           	retl
      5c: 8d 74 26 00                  	leal	(%esi,%eiz), %esi

00000060 <pcpu_demo_ptr_set>:
      60: 55                           	pushl	%ebp
      61: 89 e5                        	movl	%esp, %ebp
      63: 64 a1 00 01 00 00            	movl	%fs:0x100, %eax
      69: 83 c0 24                     	addl	$0x24, %eax
      6c: 8b 55 08                     	movl	0x8(%ebp), %edx
      6f: 89 10                        	movl	%edx, (%eax)
      71: 5d                           	popl	%ebp
      72: c3                           	retl
      73: 8d b4 26 00 00 00 00         	leal	(%esi,%eiz), %esi
      7a: 8d b6 00 00 00 00            	leal	(%esi), %esi

00000080 <pcpu_demo_curthread>:
      80: 64 a1 00 00 00 00            	movl	%fs:0x0, %eax
      86: c3                           	retl
      87: 8d b4 26 00 00 00 00         	leal	(%esi,%eiz), %esi
      8e: 66 90                        	nop

00000090 <pcpu_demo_curpcb>:
      90: 64 a1 10 00 00 00            	movl	%fs:0x10, %eax
      96: c3                           	retl