Hi Oliver, Thanks for looking at this so quickly. The develop branch does not build because when I build <abi> is set to 'sysv' not 'aapcs'. I have patched it as in the patch below by just changing <abi>aapcs to <abi>sysv in build/Jamfile.v2. I have not changed the name of the .S files so they are now somewhat inappropriately named *_aapcs_*. There was also a problem with jump_fcontext in that it was restoring the FP context from x0, not from SP. Interestingly I based my patch on the existing iOS code which also has this bug. I have not fixed it in the iOS code as I have no way of testing anything on iOS. Built and testing on arm64, ubuntu 14.04, gcc 4.9.1. Thanks for your help with this, Ed. --- CUT HERE --- commit d19baee73f90de01375af69a9f8621799c649964 Author: Edward Nevill <edward.nevill@linaro.org> Date: Mon Feb 23 17:32:49 2015 +0000 Fix build for aarch64. Restore FP registers from sp, not x0 diff --git a/build/Jamfile.v2 b/build/Jamfile.v2 index 4bf3fce..00ee44d 100644 --- a/build/Jamfile.v2 +++ b/build/Jamfile.v2 @@ -227,7 +227,7 @@ alias asm_context_sources alias asm_context_sources : [ make asm/make_arm64_aapcs_elf_gas.o : asm/make_arm64_aapcs_elf_gas.S : @gas64 ] [ make asm/jump_arm64_aapcs_elf_gas.o : asm/jump_arm64_aapcs_elf_gas.S : @gas64 ] - : <abi>aapcs + : <abi>sysv <address-model>64 <architecture>arm <binary-format>elf @@ -236,7 +236,7 @@ alias asm_context_sources alias asm_context_sources : asm/make_arm64_aapcs_elf_gas.S asm/jump_arm64_aapcs_elf_gas.S - : <abi>aapcs + : <abi>sysv <address-model>64 <architecture>arm <binary-format>elf @@ -246,7 +246,7 @@ alias asm_context_sources alias asm_context_sources : asm/make_arm64_aapcs_elf_gas.S asm/jump_arm64_aapcs_elf_gas.S - : <abi>aapcs + : <abi>sysv <address-model>64 <architecture>arm <binary-format>elf diff --git a/src/asm/jump_arm64_aapcs_elf_gas.S b/src/asm/jump_arm64_aapcs_elf_gas.S index 46e029d..645d84d 100644 --- a/src/asm/jump_arm64_aapcs_elf_gas.S +++ b/src/asm/jump_arm64_aapcs_elf_gas.S @@ -101,10 +101,10 @@ jump_fcontext: # b.eq 2f # load d8 - d15 - ldp d8, d9, [x0, #0x00] - ldp d10, d11, [x0, #0x10] - ldp d12, d13, [x0, #0x20] - ldp d14, d15, [x0, #0x30] + ldp d8, d9, [sp, #0x00] + ldp d10, d11, [sp, #0x10] + ldp d12, d13, [sp, #0x20] + ldp d14, d15, [sp, #0x30] 2: # load x19-x30 --- CUT HERE --- On 23 February 2015 at 15:25, Oliver Kowalke <oliver.kowalke@gmail.com> wrote:
thx for the patches - I've updated branch develop. Could you verify that the code is running on your arm64 system (if it is working I'll merge to master).
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