Port to 64-bit AIX

Author: Kai Luo

psm/build.rs

@@ -41,6 +41,7 @@ fn find_assembly(
         ("powerpc", _, _, _) => Some(("src/arch/powerpc32.s", true)),
         ("powerpc64", _, _, "musl") => Some(("src/arch/powerpc64_openpower.s", true)),
         ("powerpc64", "little", _, _) => Some(("src/arch/powerpc64_openpower.s", true)),
+        ("powerpc64", _, "aix", _) => Some(("src/arch/powerpc64_aix.s", true)),
         ("powerpc64", _, _, _) => Some(("src/arch/powerpc64.s", true)),
         ("s390x", _, _, _) => Some(("src/arch/zseries_linux.s", true)),
         ("mips", _, _, _) => Some(("src/arch/mips_eabi.s", true)),

psm/src/arch/powerpc64_aix.s

@@ -0,0 +1,124 @@
+  .csect .text[PR],2
+  .file "powerpc64.s"
+  .globl  rust_psm_stack_direction[DS]
+  .globl  .rust_psm_stack_direction
+  .align  4
+  .csect rust_psm_stack_direction[DS],3
+	.vbyte	8, .rust_psm_stack_direction
+	.vbyte	8, TOC[TC0]
+	.vbyte	8, 0
+	.csect .text[PR],2
+.rust_psm_stack_direction:
+    li 3, 2
+  blr
+L..rust_psm_stack_direction_end:
+	.vbyte	4, 0x00000000
+	.byte	0x00
+	.byte	0x09
+	.byte	0x20
+	.byte	0x40
+	.byte	0x80
+	.byte	0x00
+	.byte	0x00
+	.byte	0x01
+	.vbyte	4, L..rust_psm_stack_direction_end-.rust_psm_stack_direction
+	.vbyte	2, 0x0018
+	.byte	"rust_psm_stack_direction"
+
+  .globl rust_psm_stack_pointer[DS]
+  .globl .rust_psm_stack_pointer
+  .align 4
+  .csect rust_psm_stack_pointer[DS],3
+	.vbyte	8, .rust_psm_stack_pointer
+	.vbyte	8, TOC[TC0]
+	.vbyte	8, 0
+	.csect .text[PR],2
+.rust_psm_stack_pointer:
+    mr 3, 1
+    blr
+L..rust_psm_stack_pointer_end:
+	.vbyte	4, 0x00000000
+	.byte	0x00
+	.byte	0x09
+	.byte	0x20
+	.byte	0x40
+	.byte	0x80
+	.byte	0x00
+	.byte	0x00
+	.byte	0x01
+	.vbyte	4, L..rust_psm_stack_pointer_end-.rust_psm_stack_pointer
+	.vbyte	2, 0x0016
+	.byte	"rust_psm_stack_pointer"
+
+
+  .globl	rust_psm_replace_stack[DS]
+	.globl	.rust_psm_replace_stack
+	.align	4
+	.csect rust_psm_replace_stack[DS],3
+	.vbyte	8, .rust_psm_replace_stack
+	.vbyte	8, TOC[TC0]
+	.vbyte	8, 0
+	.csect .text[PR],2
+.rust_psm_replace_stack:
+    ld 2, 8(4)
+    ld 4, 0(4)
+    addi 5, 5, -48
+    mr 1, 5
+    mtctr 4
+    bctr
+L..rust_psm_replace_stack_end:
+	.vbyte	4, 0x00000000
+	.byte	0x00
+	.byte	0x09
+	.byte	0x20
+	.byte	0x40
+	.byte	0x80
+	.byte	0x00
+	.byte	0x02
+	.byte	0x01
+	.vbyte	4, 0x00000000
+	.vbyte	4, L..rust_psm_replace_stack_end-.rust_psm_replace_stack
+	.vbyte	2, 0x0016
+	.byte	"rust_psm_replace_stack"
+
+
+	.globl	rust_psm_on_stack[DS]
+	.globl	.rust_psm_on_stack
+	.align	4
+	.csect rust_psm_on_stack[DS],3
+	.vbyte	8, .rust_psm_on_stack
+	.vbyte	8, TOC[TC0]
+	.vbyte	8, 0
+	.csect .text[PR],2
+.rust_psm_on_stack:
+    mflr 0
+    std 2, -72(6)
+    std 0, -8(6)
+    sub 6, 6, 1
+    addi 6, 6, -112
+    stdux 1, 1, 6
+    ld 2, 8(5)
+    ld 5, 0(5)
+    mtctr 5
+    bctrl
+    ld 2, 40(1)
+    ld 0, 104(1)
+    mtlr 0
+    ld 1, 0(1)
+    blr
+L..rust_psm_on_stack_end:
+	.vbyte	4, 0x00000000
+	.byte	0x00
+	.byte	0x09
+	.byte	0x20
+	.byte	0x40
+	.byte	0x80
+	.byte	0x00
+	.byte	0x00
+	.byte	0x01
+	.vbyte	4, L..rust_psm_on_stack_end-.rust_psm_on_stack
+	.vbyte	2, 0x0011
+	.byte	"rust_psm_on_stack"
+
+	.toc
+