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sim: fix build error when glibc >= 2.34

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Since glibc >= 2.34, MINSIGSTKSZ and SIGSTKSZ are no longer
constant on Linux. As a result, the definition
"fatalSigStack[2*SIGSTKSZ]" fails to be compiled.
Thus, we need to dynamically allocate it.

Change-Id: Ibccc367818483b9c94beda871d1d95367d1e8b04
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53183
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Luming Wang
2021-11-24 15:38:50 +08:00
parent c99d192690
commit 39d4cdcd6b
1 changed files with 5 additions and 4 deletions
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9
src/sim/init_signals.cc
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@@ -64,18 +64,19 @@ namespace gem5
{
// Use an separate stack for fatal signal handlers
static uint8_t fatalSigStack[2 * SIGSTKSZ];
static bool
setupAltStack()
{
const auto stack_size = 2 * SIGSTKSZ;
static uint8_t *fatal_sig_stack = new uint8_t[stack_size];
stack_t stack;
#if defined(__FreeBSD__) && (__FreeBSD_version < 1100097)
stack.ss_sp = (char *)fatalSigStack;
stack.ss_sp = (char *)fatal_sig_stack;
#else
stack.ss_sp = fatalSigStack;
stack.ss_sp = fatal_sig_stack;
#endif
stack.ss_size = sizeof(fatalSigStack);
stack.ss_size = stack_size;
stack.ss_flags = 0;
return sigaltstack(&stack, NULL) == 0;