From 0a48860c27a8eb291bcc7616ea9eb073dc660cab Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 24 May 2019 10:46:08 -0400 Subject: add riscv64 architecture support Author: Alex Suykov Author: Aric Belsito Author: Drew DeVault Author: Michael Clark Author: Michael Forney Author: Stefan O'Rear This port has involved the work of many people over several years. I have tried to ensure that everyone with substantial contributions has been credited above; if any omissions are found they will be noted later in an update to the authors/contributors list in the COPYRIGHT file. The version committed here comes from the riscv/riscv-musl repo's commit 3fe7e2c75df78eef42dcdc352a55757729f451e2, with minor changes by me for issues found during final review: - a_ll/a_sc atomics are removed (according to the ISA spec, lr/sc are not safe to use in separate inline asm fragments) - a_cas[_p] is fixed to be a memory barrier - the call from the _start assembly into the C part of crt1/ldso is changed to allow for the possibility that the linker does not place them nearby each other. - DTP_OFFSET is defined correctly so that local-dynamic TLS works - reloc.h LDSO_ARCH logic is simplified and made explicit. - unused, non-functional crti/n asm files are removed. - an empty .sdata section is added to crt1 so that the __global_pointer reference is resolvable. - indentation style errors in some asm files are fixed. --- src/setjmp/riscv64/longjmp.S | 42 ++++++++++++++++++++++++++++++++++++++++++ src/setjmp/riscv64/setjmp.S | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 83 insertions(+) create mode 100644 src/setjmp/riscv64/longjmp.S create mode 100644 src/setjmp/riscv64/setjmp.S (limited to 'src/setjmp') diff --git a/src/setjmp/riscv64/longjmp.S b/src/setjmp/riscv64/longjmp.S new file mode 100644 index 00000000..41e2d210 --- /dev/null +++ b/src/setjmp/riscv64/longjmp.S @@ -0,0 +1,42 @@ +.global __longjmp +.global _longjmp +.global longjmp +.type __longjmp, %function +.type _longjmp, %function +.type longjmp, %function +__longjmp: +_longjmp: +longjmp: + ld s0, 0(a0) + ld s1, 8(a0) + ld s2, 16(a0) + ld s3, 24(a0) + ld s4, 32(a0) + ld s5, 40(a0) + ld s6, 48(a0) + ld s7, 56(a0) + ld s8, 64(a0) + ld s9, 72(a0) + ld s10, 80(a0) + ld s11, 88(a0) + ld sp, 96(a0) + ld ra, 104(a0) + +#ifndef __riscv_float_abi_soft + fld fs0, 112(a0) + fld fs1, 120(a0) + fld fs2, 128(a0) + fld fs3, 136(a0) + fld fs4, 144(a0) + fld fs5, 152(a0) + fld fs6, 160(a0) + fld fs7, 168(a0) + fld fs8, 176(a0) + fld fs9, 184(a0) + fld fs10, 192(a0) + fld fs11, 200(a0) +#endif + + seqz a0, a1 + add a0, a0, a1 + ret diff --git a/src/setjmp/riscv64/setjmp.S b/src/setjmp/riscv64/setjmp.S new file mode 100644 index 00000000..51249672 --- /dev/null +++ b/src/setjmp/riscv64/setjmp.S @@ -0,0 +1,41 @@ +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp, %function +.type _setjmp, %function +.type setjmp, %function +__setjmp: +_setjmp: +setjmp: + sd s0, 0(a0) + sd s1, 8(a0) + sd s2, 16(a0) + sd s3, 24(a0) + sd s4, 32(a0) + sd s5, 40(a0) + sd s6, 48(a0) + sd s7, 56(a0) + sd s8, 64(a0) + sd s9, 72(a0) + sd s10, 80(a0) + sd s11, 88(a0) + sd sp, 96(a0) + sd ra, 104(a0) + +#ifndef __riscv_float_abi_soft + fsd fs0, 112(a0) + fsd fs1, 120(a0) + fsd fs2, 128(a0) + fsd fs3, 136(a0) + fsd fs4, 144(a0) + fsd fs5, 152(a0) + fsd fs6, 160(a0) + fsd fs7, 168(a0) + fsd fs8, 176(a0) + fsd fs9, 184(a0) + fsd fs10, 192(a0) + fsd fs11, 200(a0) +#endif + + li a0, 0 + ret -- cgit v1.2.1