Date: Wed, 30 Jun 2021 10:31:01 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-arm@FreeBSD.org Subject: [Bug 256899] ELF image activator does not like thumb entry points Message-ID: <bug-256899-7@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256899 Bug ID: 256899 Summary: ELF image activator does not like thumb entry points Product: Base System Version: 13.0-RELEASE Hardware: arm OS: Any Status: New Severity: Affects Only Me Priority: --- Component: arm Assignee: freebsd-arm@FreeBSD.org Reporter: fuz@fuz.su An ARM ELF binary with an odd entry point should start the binary in Thumb mode. However, this does not seem to be the case, forcing the entry point to be in ARM mode. To reproduce, copy the following code to a file named test.s: .arch armv7a .syntax unified .thumb .thumb_func .globl _start _start: movs r0, #0 movs r7, #1 svc #0 Then assemble and link: as -o test.o test.s ld -o test test.o And observe the program crashing on start with a segmentation fault or invalid instruction exception. Expected behaviour is that the program terminates with exit status 0. -- You are receiving this mail because: You are the assignee for the bug.home | help
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