detached 2a13cf5

use crosscall2 from runtime/cgo (#80)

commit
2a13cf524ca4c18c2cc55ecaffc89f1edeb6f75f
author
TotallyGamerJet · · 2022-12-14 15:09 UTC
committer
GitHub · · 2022-12-14 15:09 UTC
parent
2c9e36d
signature
GPG Unverified4AEE18F83AFDEB23 The key is unknown
5 files · +120 -29
Unified
UnifiedSplit
M README.md +1 -0
@@ -11,6 +11,7 @@ This is a list of the copied files:
1111
1212 * `zcallback_darwin_*.s` from package `runtime`
1313 * `internal/abi/abi_*.h` from package `runtime/cgo`
14+* `internal/fakecgo/asm_GOARCH.s` from package `runtime/cgo`
1415 * `internal/fakecgo/callbacks.go` from package `runtime/cgo`
1516 * `internal/fakecgo/go_GOOS_GOARCH.go` from package `runtime/cgo`
1617 * `internal/fakecgo/iscgo.go` from package `runtime/cgo`
@@ -11,6 +11,7 @@ This is a list of the copied files:
11 11
12 * `zcallback_darwin_*.s` from package `runtime`12 * `zcallback_darwin_*.s` from package `runtime`
13 * `internal/abi/abi_*.h` from package `runtime/cgo`13 * `internal/abi/abi_*.h` from package `runtime/cgo`
14+* `internal/fakecgo/asm_GOARCH.s` from package `runtime/cgo`
14 * `internal/fakecgo/callbacks.go` from package `runtime/cgo`15 * `internal/fakecgo/callbacks.go` from package `runtime/cgo`
15 * `internal/fakecgo/go_GOOS_GOARCH.go` from package `runtime/cgo`16 * `internal/fakecgo/go_GOOS_GOARCH.go` from package `runtime/cgo`
16 * `internal/fakecgo/iscgo.go` from package `runtime/cgo`17 * `internal/fakecgo/iscgo.go` from package `runtime/cgo`
A internal/fakecgo/asm_amd64.s +76 -0
@@ -0,0 +1,76 @@
1+// Copyright 2009 The Go Authors. All rights reserved.
2+// Use of this source code is governed by a BSD-style
3+// license that can be found in the LICENSE file.
4+
5+#include "textflag.h"
6+
7+// Called by C code generated by cmd/cgo.
8+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
9+// Saves C callee-saved registers and calls cgocallback with three arguments.
10+// fn is the PC of a func(a unsafe.Pointer) function.
11+// This signature is known to SWIG, so we can't change it.
12+#ifndef GOOS_windows
13+TEXT crosscall2(SB), NOSPLIT, $0x50-0 // keeps stack pointer 32-byte aligned
14+#else
15+TEXT crosscall2(SB), NOSPLIT, $0x110-0 // also need to save xmm6 - xmm15
16+#endif
17+ MOVQ BX, 0x18(SP)
18+ MOVQ R12, 0x28(SP)
19+ MOVQ R13, 0x30(SP)
20+ MOVQ R14, 0x38(SP)
21+ MOVQ R15, 0x40(SP)
22+
23+#ifdef GOOS_windows
24+ // Win64 save RBX, RBP, RDI, RSI, RSP, R12, R13, R14, R15 and XMM6 -- XMM15.
25+ MOVQ DI, 0x48(SP)
26+ MOVQ SI, 0x50(SP)
27+ MOVUPS X6, 0x60(SP)
28+ MOVUPS X7, 0x70(SP)
29+ MOVUPS X8, 0x80(SP)
30+ MOVUPS X9, 0x90(SP)
31+ MOVUPS X10, 0xa0(SP)
32+ MOVUPS X11, 0xb0(SP)
33+ MOVUPS X12, 0xc0(SP)
34+ MOVUPS X13, 0xd0(SP)
35+ MOVUPS X14, 0xe0(SP)
36+ MOVUPS X15, 0xf0(SP)
37+
38+ MOVQ CX, 0x0(SP) // fn
39+ MOVQ DX, 0x8(SP) // arg
40+
41+ // Skip n in R8.
42+ MOVQ R9, 0x10(SP) // ctxt
43+
44+ CALL runtime·cgocallback(SB)
45+
46+ MOVQ 0x48(SP), DI
47+ MOVQ 0x50(SP), SI
48+ MOVUPS 0x60(SP), X6
49+ MOVUPS 0x70(SP), X7
50+ MOVUPS 0x80(SP), X8
51+ MOVUPS 0x90(SP), X9
52+ MOVUPS 0xa0(SP), X10
53+ MOVUPS 0xb0(SP), X11
54+ MOVUPS 0xc0(SP), X12
55+ MOVUPS 0xd0(SP), X13
56+ MOVUPS 0xe0(SP), X14
57+ MOVUPS 0xf0(SP), X15
58+
59+#else
60+ MOVQ DI, 0x0(SP) // fn
61+ MOVQ SI, 0x8(SP) // arg
62+
63+ // Skip n in DX.
64+ MOVQ CX, 0x10(SP) // ctxt
65+
66+ CALL runtime·cgocallback(SB)
67+
68+#endif
69+
70+ MOVQ 0x18(SP), BX
71+ MOVQ 0x28(SP), R12
72+ MOVQ 0x30(SP), R13
73+ MOVQ 0x38(SP), R14
74+ MOVQ 0x40(SP), R15
75+
76+ RET
@@ -0,0 +1,76 @@
1+// Copyright 2009 The Go Authors. All rights reserved.
2+// Use of this source code is governed by a BSD-style
3+// license that can be found in the LICENSE file.
4+
5+#include "textflag.h"
6+
7+// Called by C code generated by cmd/cgo.
8+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
9+// Saves C callee-saved registers and calls cgocallback with three arguments.
10+// fn is the PC of a func(a unsafe.Pointer) function.
11+// This signature is known to SWIG, so we can't change it.
12+#ifndef GOOS_windows
13+TEXT crosscall2(SB), NOSPLIT, $0x50-0 // keeps stack pointer 32-byte aligned
14+#else
15+TEXT crosscall2(SB), NOSPLIT, $0x110-0 // also need to save xmm6 - xmm15
16+#endif
17+ MOVQ BX, 0x18(SP)
18+ MOVQ R12, 0x28(SP)
19+ MOVQ R13, 0x30(SP)
20+ MOVQ R14, 0x38(SP)
21+ MOVQ R15, 0x40(SP)
22+
23+#ifdef GOOS_windows
24+ // Win64 save RBX, RBP, RDI, RSI, RSP, R12, R13, R14, R15 and XMM6 -- XMM15.
25+ MOVQ DI, 0x48(SP)
26+ MOVQ SI, 0x50(SP)
27+ MOVUPS X6, 0x60(SP)
28+ MOVUPS X7, 0x70(SP)
29+ MOVUPS X8, 0x80(SP)
30+ MOVUPS X9, 0x90(SP)
31+ MOVUPS X10, 0xa0(SP)
32+ MOVUPS X11, 0xb0(SP)
33+ MOVUPS X12, 0xc0(SP)
34+ MOVUPS X13, 0xd0(SP)
35+ MOVUPS X14, 0xe0(SP)
36+ MOVUPS X15, 0xf0(SP)
37+
38+ MOVQ CX, 0x0(SP) // fn
39+ MOVQ DX, 0x8(SP) // arg
40+
41+ // Skip n in R8.
42+ MOVQ R9, 0x10(SP) // ctxt
43+
44+ CALL runtime·cgocallback(SB)
45+
46+ MOVQ 0x48(SP), DI
47+ MOVQ 0x50(SP), SI
48+ MOVUPS 0x60(SP), X6
49+ MOVUPS 0x70(SP), X7
50+ MOVUPS 0x80(SP), X8
51+ MOVUPS 0x90(SP), X9
52+ MOVUPS 0xa0(SP), X10
53+ MOVUPS 0xb0(SP), X11
54+ MOVUPS 0xc0(SP), X12
55+ MOVUPS 0xd0(SP), X13
56+ MOVUPS 0xe0(SP), X14
57+ MOVUPS 0xf0(SP), X15
58+
59+#else
60+ MOVQ DI, 0x0(SP) // fn
61+ MOVQ SI, 0x8(SP) // arg
62+
63+ // Skip n in DX.
64+ MOVQ CX, 0x10(SP) // ctxt
65+
66+ CALL runtime·cgocallback(SB)
67+
68+#endif
69+
70+ MOVQ 0x18(SP), BX
71+ MOVQ 0x28(SP), R12
72+ MOVQ 0x30(SP), R13
73+ MOVQ 0x38(SP), R14
74+ MOVQ 0x40(SP), R15
75+
76+ RET
A internal/fakecgo/asm_arm64.s +36 -0
@@ -0,0 +1,36 @@
1+// Copyright 2015 The Go Authors. All rights reserved.
2+// Use of this source code is governed by a BSD-style
3+// license that can be found in the LICENSE file.
4+
5+#include "textflag.h"
6+#include "../abi/abi_arm64.h"
7+
8+// Called by C code generated by cmd/cgo.
9+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
10+// Saves C callee-saved registers and calls cgocallback with three arguments.
11+// fn is the PC of a func(a unsafe.Pointer) function.
12+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
13+/*
14+ * We still need to save all callee save register as before, and then
15+ * push 3 args for fn (R0, R1, R3), skipping R2.
16+ * Also note that at procedure entry in gc world, 8(RSP) will be the
17+ * first arg.
18+ */
19+ SUB $(8*24), RSP
20+ STP (R0, R1), (8*1)(RSP)
21+ MOVD R3, (8*3)(RSP)
22+
23+ SAVE_R19_TO_R28(8*4)
24+ SAVE_F8_TO_F15(8*14)
25+ STP (R29, R30), (8*22)(RSP)
26+
27+ // Initialize Go ABI environment
28+ BL runtime·load_g(SB)
29+ BL runtime·cgocallback(SB)
30+
31+ RESTORE_R19_TO_R28(8*4)
32+ RESTORE_F8_TO_F15(8*14)
33+ LDP (8*22)(RSP), (R29, R30)
34+
35+ ADD $(8*24), RSP
36+ RET
@@ -0,0 +1,36 @@
1+// Copyright 2015 The Go Authors. All rights reserved.
2+// Use of this source code is governed by a BSD-style
3+// license that can be found in the LICENSE file.
4+
5+#include "textflag.h"
6+#include "../abi/abi_arm64.h"
7+
8+// Called by C code generated by cmd/cgo.
9+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
10+// Saves C callee-saved registers and calls cgocallback with three arguments.
11+// fn is the PC of a func(a unsafe.Pointer) function.
12+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
13+/*
14+ * We still need to save all callee save register as before, and then
15+ * push 3 args for fn (R0, R1, R3), skipping R2.
16+ * Also note that at procedure entry in gc world, 8(RSP) will be the
17+ * first arg.
18+ */
19+ SUB $(8*24), RSP
20+ STP (R0, R1), (8*1)(RSP)
21+ MOVD R3, (8*3)(RSP)
22+
23+ SAVE_R19_TO_R28(8*4)
24+ SAVE_F8_TO_F15(8*14)
25+ STP (R29, R30), (8*22)(RSP)
26+
27+ // Initialize Go ABI environment
28+ BL runtime·load_g(SB)
29+ BL runtime·cgocallback(SB)
30+
31+ RESTORE_R19_TO_R28(8*4)
32+ RESTORE_F8_TO_F15(8*14)
33+ LDP (8*22)(RSP), (R29, R30)
34+
35+ ADD $(8*24), RSP
36+ RET
M sys_darwin_amd64.s +6 -6
@@ -111,12 +111,12 @@ TEXT callbackasm1(SB), NOSPLIT, $0
111111 LEAQ 24(SP), AX // take the address of callbackArgs
112112
113113 // Call cgocallback, which will call callbackWrap(frame).
114- MOVQ $0, 16(SP) // context
115- MOVQ AX, 8(SP) // frame (address of callbackArgs)
116- MOVQ ·callbackWrap_call(SB), DX // Get the ABIInternal function pointer
117- MOVQ (DX), CX // without <ABIInternal> by using a closure.
118- MOVQ CX, 0(SP) // PC of function value to call (callbackWrap)
119- CALL runtime·cgocallback(SB) // runtime.cgocallback(fn, frame, ctxt uintptr)
114+ MOVQ ·callbackWrap_call(SB), DI // Get the ABIInternal function pointer
115+ MOVQ (DI), DI // without <ABIInternal> by using a closure.
116+ MOVQ AX, SI // frame (address of callbackArgs)
117+ MOVQ $0, CX // context
118+
119+ CALL crosscall2(SB) // runtime.cgocallback(fn, frame, ctxt uintptr)
120120
121121 // Get callback result.
122122 MOVQ (24+callbackArgs_result)(SP), AX
@@ -111,12 +111,12 @@ TEXT callbackasm1(SB), NOSPLIT, $0
111 LEAQ 24(SP), AX // take the address of callbackArgs111 LEAQ 24(SP), AX // take the address of callbackArgs
112 112
113 // Call cgocallback, which will call callbackWrap(frame).113 // Call cgocallback, which will call callbackWrap(frame).
114- MOVQ $0, 16(SP) // context114+ MOVQ ·callbackWrap_call(SB), DI // Get the ABIInternal function pointer
115- MOVQ AX, 8(SP) // frame (address of callbackArgs)115+ MOVQ (DI), DI // without <ABIInternal> by using a closure.
116- MOVQ ·callbackWrap_call(SB), DX // Get the ABIInternal function pointer116+ MOVQ AX, SI // frame (address of callbackArgs)
117- MOVQ (DX), CX // without <ABIInternal> by using a closure.117+ MOVQ $0, CX // context
118- MOVQ CX, 0(SP) // PC of function value to call (callbackWrap)118+
119- CALL runtime·cgocallback(SB) // runtime.cgocallback(fn, frame, ctxt uintptr)119+ CALL crosscall2(SB) // runtime.cgocallback(fn, frame, ctxt uintptr)
120 120
121 // Get callback result.121 // Get callback result.
122 MOVQ (24+callbackArgs_result)(SP), AX122 MOVQ (24+callbackArgs_result)(SP), AX
M sys_darwin_arm64.s +1 -23
@@ -95,29 +95,7 @@ TEXT callbackasm1(SB), NOSPLIT, $208-0
9595 MOVD R13, R1 // frame (&callbackArgs{...})
9696 MOVD $0, R3 // ctxt uintptr
9797
98- // We still need to save all callee save register as before, and then
99- // push 3 args for fn (R0, R1, R3), skipping R2.
100- // Also note that at procedure entry in gc world, 8(RSP) will be the
101- // first arg.
102- SUB $(8*24), RSP
103- STP (R0, R1), (8*1)(RSP)
104- MOVD R3, (8*3)(RSP)
105-
106- // Push C callee-save registers R19-R28.
107- // LR, FP already saved.
108- SAVE_R19_TO_R28(8*4)
109- SAVE_F8_TO_F15(8*14)
110- STP (R29, R30), (8*22)(RSP)
111-
112- // Initialize Go ABI environment
113- BL runtime·load_g(SB)
114- BL runtime·cgocallback(SB)
115-
116- RESTORE_R19_TO_R28(8*4)
117- RESTORE_F8_TO_F15(8*14)
118- LDP (8*22)(RSP), (R29, R30)
119-
120- ADD $(8*24), RSP
98+ BL crosscall2(SB)
12199
122100 // Get callback result.
123101 MOVD $cbargs-(18*8+callbackArgs__size)(SP), R13
@@ -95,29 +95,7 @@ TEXT callbackasm1(SB), NOSPLIT, $208-0
95 MOVD R13, R1 // frame (&callbackArgs{...})95 MOVD R13, R1 // frame (&callbackArgs{...})
96 MOVD $0, R3 // ctxt uintptr96 MOVD $0, R3 // ctxt uintptr
97 97
98- // We still need to save all callee save register as before, and then98+ BL crosscall2(SB)
99- // push 3 args for fn (R0, R1, R3), skipping R2.
100- // Also note that at procedure entry in gc world, 8(RSP) will be the
101- // first arg.
102- SUB $(8*24), RSP
103- STP (R0, R1), (8*1)(RSP)
104- MOVD R3, (8*3)(RSP)
105-
106- // Push C callee-save registers R19-R28.
107- // LR, FP already saved.
108- SAVE_R19_TO_R28(8*4)
109- SAVE_F8_TO_F15(8*14)
110- STP (R29, R30), (8*22)(RSP)
111-
112- // Initialize Go ABI environment
113- BL runtime·load_g(SB)
114- BL runtime·cgocallback(SB)
115-
116- RESTORE_R19_TO_R28(8*4)
117- RESTORE_F8_TO_F15(8*14)
118- LDP (8*22)(RSP), (R29, R30)
119-
120- ADD $(8*24), RSP
121 99
122 // Get callback result.100 // Get callback result.
123 MOVD $cbargs-(18*8+callbackArgs__size)(SP), R13101 MOVD $cbargs-(18*8+callbackArgs__size)(SP), R13

Keyboard shortcuts

Single-key shortcuts are on. ctrl k and esc work whatever this says.

ctrl k :
go to a section, branch, tag, file or repository
?
this list
j k
move the row cursor down / up
enter
open the row under the cursor; on Files, a directory opens or closes in place
↑ ↓ ← → home end
in the file tree (focus on a row): previous / next row, close / open a directory or go to its parent / first entry, first / last row. They never open a file
l h
on Files: open a directory or a file / close a directory or go up to its parent, then to the parent page. Elsewhere: into the side panel (on a merge request, its files) / back to the content; there j k move between its controls
g g G
first / last row
/
filter the list; on Files, find a file anywhere in the repository (esc clears, enter opens the best match)
b
switch branch or tag
g s g f g c g b g m g i g r g a
tabs: summary, files, commits, branches & tags, merge requests, issues, releases, actions (when available)
g h
home
w
wide mode: use the whole width of the screen, or not (remembered)
y
copy a permalink pinned to the commit
d u x
diff: split / unified / collapse or expand all
e E
diff: the whole file in view / every file, with the lines the hunks hide
n
merge request: next note in the diff
esc
close a dialog, leave a field

Branches 1

Tags 102

↑↓ moveenter openesc close