[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm closed https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/stephenpeckham approved this pull request. https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/stephenpeckham commented: No further comments https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm resolved https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm resolved https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm updated https://github.com/llvm/llvm-project/pull/66549 >From d42f6f35b8a4f3750b151f29951b215889d2c3e4 Mon Sep 17 00:00:00 2001 From: Xing Xue Date: Fri, 15 Sep 2023 16:09:43 -0400 Subject: [PATCH 1/2] The TOC register (r2) was changed by the glue code if unw_get

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

@@ -305,9 +305,22 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) mflr 0 std 0, PPC64_OFFS_SRR0(3) // store lr as ssr0 PPC64_STR(1) + PPC64_STR(4) // Save r4 first since it will be used for fixing r2. +#if defined(_AIX) + // The TOC register (r2) was changed by t

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm edited https://github.com/llvm/llvm-project/pull/66549 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

llvmbot wrote: @llvm/pr-subscribers-libunwind Changes `unw_getcontext` saves the caller's registers in the context. However, if the caller of `unw_getcontext` is in a different module, the glue code of `unw_getcontext` sets the TOC register (r2) with the new TOC base and saves the origin

[libunwind] [libunwind][AIX] Fix up TOC register if unw_getcontext is called from a different module (PR #66549)

https://github.com/xingxue-ibm created https://github.com/llvm/llvm-project/pull/66549 `unw_getcontext` saves the caller's registers in the context. However, if the caller of `unw_getcontext` is in a different module, the glue code of `unw_getcontext` sets the TOC register (r2) with the new TO