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[libc] Fix issue with sigjmp_buf.h not being found (#150439)
When trying to use <setjmp.h>, it will try to include llvm-libc-types/sigjmp_buf.h due to the way that headergen works. This commit creates a dummy file, as the real implementation is found in llvm-libc-types/jmp_buf.h.
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18 files changed

+142
-82
lines changed

18 files changed

+142
-82
lines changed

‎libc/hdr/types/CMakeLists.txt

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@@ -319,6 +319,15 @@ add_proxy_header_library(
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libc.include.setjmp
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)
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add_proxy_header_library(
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sigjmp_buf
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HDRS
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sigjmp_buf.h
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FULL_BUILD_DEPENDS
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libc.include.llvm-libc-types.sigjmp_buf
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libc.include.setjmp
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)
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add_proxy_header_library(
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struct_msghdr
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HDRS

‎libc/hdr/types/jmp_buf.h

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@@ -1,4 +1,4 @@
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//===-- Definition of jmp_buf.h ------------------------------------------===//
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//===-- Definition of jmp_buf.h -------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apahce License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.

‎libc/hdr/types/sigjmp_buf.h

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@@ -0,0 +1,22 @@
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//===-- Definition of sigjmp_buf.h ----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apahce License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_HDR_TYPES_SIGJMP_BUF_H
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#define LLVM_LIBC_HDR_TYPES_SIGJMP_BUF_H
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#ifdef LIBC_FULL_BUILD
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#include "include/llvm-libc-types/sigjmp_buf.h"
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#else // overlay mode
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#include <setjmp.h>
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#endif // LLVM_LIBC_FULL_BUILD
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#endif // LLVM_LIBC_HDR_TYPES_SIGJMP_BUF_H

‎libc/include/CMakeLists.txt

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@@ -215,6 +215,7 @@ add_header_macro(
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.jmp_buf
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.llvm-libc-types.sigjmp_buf
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)
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add_header_macro(

‎libc/include/llvm-libc-types/CMakeLists.txt

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -82,7 +82,9 @@ add_header(union_sigval HDR union_sigval.h)
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add_header(siginfo_t HDR siginfo_t.h DEPENDS .union_sigval .pid_t .uid_t .clock_t)
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add_header(sig_atomic_t HDR sig_atomic_t.h)
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add_header(sigset_t HDR sigset_t.h DEPENDS libc.include.llvm-libc-macros.signal_macros)
85-
add_header(jmp_buf HDR jmp_buf.h DEPENDS .sigset_t)
85+
add_header(__jmp_buf HDR __jmp_buf.h DEPENDS .sigset_t)
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add_header(jmp_buf HDR jmp_buf.h DEPENDS .__jmp_buf)
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add_header(sigjmp_buf HDR sigjmp_buf.h DEPENDS .__jmp_buf)
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add_header(struct_sigaction HDR struct_sigaction.h DEPENDS .sigset_t .siginfo_t)
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add_header(struct_timespec HDR struct_timespec.h DEPENDS .time_t)
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add_header(

‎libc/include/llvm-libc-types/__jmp_buf.h

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@@ -0,0 +1,78 @@
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//===-- Definition of type __jmp_buf --------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_TYPES___JMP_BUF_H
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#define LLVM_LIBC_TYPES___JMP_BUF_H
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// TODO: implement sigjmp_buf related functions for other architectures
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// Issue: https://github.com/llvm/llvm-project/issues/136358
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#if defined(__linux__)
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#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
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defined(__arm__) || defined(__riscv)
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#define __LIBC_HAS_SIGJMP_BUF
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#endif
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#endif
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#if defined(__LIBC_HAS_SIGJMP_BUF)
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#include "sigset_t.h"
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#endif
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typedef struct {
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#ifdef __x86_64__
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__UINT64_TYPE__ rbx;
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__UINT64_TYPE__ rbp;
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__UINT64_TYPE__ r12;
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__UINT64_TYPE__ r13;
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__UINT64_TYPE__ r14;
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__UINT64_TYPE__ r15;
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__UINTPTR_TYPE__ rsp;
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__UINTPTR_TYPE__ rip;
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#elif defined(__i386__)
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long ebx;
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long esi;
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long edi;
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long ebp;
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long esp;
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long eip;
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#elif defined(__riscv)
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/* Program counter. */
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long int __pc;
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/* Callee-saved registers. */
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long int __regs[12];
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/* Stack pointer. */
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long int __sp;
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/* Callee-saved floating point registers. */
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#if __riscv_float_abi_double
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double __fpregs[12];
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#elif defined(__riscv_float_abi_single)
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#error "__jmp_buf not available for your target architecture."
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#endif
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#elif defined(__arm__)
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// r4, r5, r6, r7, r8, r9, r10, r11, r12, lr
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long opaque[10];
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#elif defined(__aarch64__)
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long opaque[14]; // x19-x29, lr, sp, optional x18
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#if __ARM_FP
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long fopaque[8]; // d8-d15
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#endif
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#else
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#error "__jmp_buf not available for your target architecture."
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#endif
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#if defined(__LIBC_HAS_SIGJMP_BUF)
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// return address
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void *sig_retaddr;
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// extra register buffer to avoid indefinite stack growth in sigsetjmp
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void *sig_extra;
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// signal masks
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sigset_t sigmask;
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#endif
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} __jmp_buf;
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#undef __LIBC_HAS_SIGJMP_BUF
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#endif // LLVM_LIBC_TYPES___JMP_BUF_H

‎libc/include/llvm-libc-types/jmp_buf.h

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@@ -9,76 +9,8 @@
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#ifndef LLVM_LIBC_TYPES_JMP_BUF_H
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#define LLVM_LIBC_TYPES_JMP_BUF_H
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// TODO: implement sigjmp_buf related functions for other architectures
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// Issue: https://github.com/llvm/llvm-project/issues/136358
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#if defined(__linux__)
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#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
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defined(__arm__) || defined(__riscv)
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#define __LIBC_HAS_SIGJMP_BUF
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#endif
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#endif
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#if defined(__LIBC_HAS_SIGJMP_BUF)
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#include "sigset_t.h"
23-
#endif
24-
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typedef struct {
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#ifdef __x86_64__
27-
__UINT64_TYPE__ rbx;
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__UINT64_TYPE__ rbp;
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__UINT64_TYPE__ r12;
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__UINT64_TYPE__ r13;
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__UINT64_TYPE__ r14;
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__UINT64_TYPE__ r15;
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__UINTPTR_TYPE__ rsp;
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__UINTPTR_TYPE__ rip;
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#elif defined(__i386__)
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long ebx;
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long esi;
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long edi;
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long ebp;
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long esp;
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long eip;
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#elif defined(__riscv)
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/* Program counter. */
44-
long int __pc;
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/* Callee-saved registers. */
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long int __regs[12];
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/* Stack pointer. */
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long int __sp;
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/* Callee-saved floating point registers. */
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#if __riscv_float_abi_double
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double __fpregs[12];
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#elif defined(__riscv_float_abi_single)
53-
#error "__jmp_buf not available for your target architecture."
54-
#endif
55-
#elif defined(__arm__)
56-
// r4, r5, r6, r7, r8, r9, r10, r11, r12, lr
57-
long opaque[10];
58-
#elif defined(__aarch64__)
59-
long opaque[14]; // x19-x29, lr, sp, optional x18
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#if __ARM_FP
61-
long fopaque[8]; // d8-d15
62-
#endif
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#else
64-
#error "__jmp_buf not available for your target architecture."
65-
#endif
66-
#if defined(__LIBC_HAS_SIGJMP_BUF)
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// return address
68-
void *sig_retaddr;
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// extra register buffer to avoid indefinite stack growth in sigsetjmp
70-
void *sig_extra;
71-
// signal masks
72-
sigset_t sigmask;
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#endif
74-
} __jmp_buf;
12+
#include "__jmp_buf.h"
7513

7614
typedef __jmp_buf jmp_buf[1];
7715

78-
#if defined(__LIBC_HAS_SIGJMP_BUF)
79-
typedef __jmp_buf sigjmp_buf[1];
80-
#endif
81-
82-
#undef __LIBC_HAS_SIGJMP_BUF
83-
8416
#endif // LLVM_LIBC_TYPES_JMP_BUF_H

‎libc/include/llvm-libc-types/sigjmp_buf.h

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@@ -0,0 +1,16 @@
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//===-- Definition of type sigjmp_buf -------------------------------------===//
2+
//
3+
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4+
// See https://llvm.org/LICENSE.txt for license information.
5+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6+
//
7+
//===----------------------------------------------------------------------===//
8+
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#ifndef LLVM_LIBC_TYPES_SIGJMP_BUF_H
10+
#define LLVM_LIBC_TYPES_SIGJMP_BUF_H
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12+
#include "__jmp_buf.h"
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typedef __jmp_buf sigjmp_buf[1];
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#endif // LLVM_LIBC_TYPES_SIGJMP_BUF_H

‎libc/src/setjmp/aarch64/CMakeLists.txt

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Original file line numberDiff line numberDiff line change
@@ -34,7 +34,7 @@ add_entrypoint_object(
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HDRS
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../sigsetjmp.h
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DEPENDS
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libc.hdr.types.jmp_buf
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libc.hdr.types.sigjmp_buf
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libc.hdr.types.sigset_t
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libc.hdr.offsetof_macros
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libc.src.setjmp.sigsetjmp_epilogue

‎libc/src/setjmp/arm/CMakeLists.txt

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Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@ if (TARGET libc.src.setjmp.sigsetjmp_epilogue)
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HDRS
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../sigsetjmp.h
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DEPENDS
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libc.hdr.types.jmp_buf
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libc.hdr.types.sigjmp_buf
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libc.hdr.types.sigset_t
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libc.hdr.offsetof_macros
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libc.src.setjmp.sigsetjmp_epilogue

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