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author | Palmer Dabbelt <palmer@dabbelt.com> | 2017-12-26 20:51:24 -0800 |
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committer | Palmer Dabbelt <palmer@dabbelt.com> | 2018-01-29 10:25:29 -0800 |
commit | c776fa113da1f0d0cf83418e8937c0a8a4d83d3e (patch) | |
tree | 5aa9172a85e80592e4fb4f05c4bf53444612338f /sysdeps/riscv/__longjmp.S | |
parent | ba9e25a62bd662ce8c7ed6c8d1c072110f1ffae5 (diff) | |
download | glibc-c776fa113da1f0d0cf83418e8937c0a8a4d83d3e.tar.gz glibc-c776fa113da1f0d0cf83418e8937c0a8a4d83d3e.tar.xz glibc-c776fa113da1f0d0cf83418e8937c0a8a4d83d3e.zip |
RISC-V: ABI Implementation
This patch contains code that needs to directly know about the RISC-V ABI, which is specified in a work-in-progress psABI document: https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md This is meant to contain all the RISC-V code that needs to explicitly name registers or manage in-memory structure layout. This does not contain any of the Linux-specific code. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/__longjmp.S: New file. * sysdeps/riscv/backtrace.c: Likewise. * sysdeps/riscv/bits/endian.h: Likewise. * sysdeps/riscv/bits/setjmp.h: Likewise. * sysdeps/riscv/bits/wordsize.h: Likewise. * sysdeps/riscv/bsd-_setjmp.c: Likewise. * sysdeps/riscv/bsd-setjmp.c: Likewise. * sysdeps/riscv/dl-trampoline.S: Likewise. * sysdeps/riscv/gccframe.h: Likewise. * sysdeps/riscv/jmpbuf-offsets.h: Likewise. * sysdeps/riscv/jmpbuf-unwind.h: Likewise. * sysdeps/riscv/machine-gmon.h: Likewise. * sysdeps/riscv/memusage.h: Likewise. * sysdeps/riscv/setjmp.S: Likewise. * sysdeps/riscv/sys/asm.h: Likewise. * sysdeps/riscv/tls-macros.h: Likewise.
Diffstat (limited to 'sysdeps/riscv/__longjmp.S')
-rw-r--r-- | sysdeps/riscv/__longjmp.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/riscv/__longjmp.S b/sysdeps/riscv/__longjmp.S new file mode 100644 index 0000000000..0b9e5e10e2 --- /dev/null +++ b/sysdeps/riscv/__longjmp.S @@ -0,0 +1,57 @@ +/* longjmp, RISC-V version. + Copyright (C) 1996-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> + +ENTRY (__longjmp) + REG_L ra, 0*SZREG(a0) + REG_L s0, 1*SZREG(a0) + REG_L s1, 2*SZREG(a0) + REG_L s2, 3*SZREG(a0) + REG_L s3, 4*SZREG(a0) + REG_L s4, 5*SZREG(a0) + REG_L s5, 6*SZREG(a0) + REG_L s6, 7*SZREG(a0) + REG_L s7, 8*SZREG(a0) + REG_L s8, 9*SZREG(a0) + REG_L s9, 10*SZREG(a0) + REG_L s10,11*SZREG(a0) + REG_L s11,12*SZREG(a0) + REG_L sp, 13*SZREG(a0) + +#ifndef __riscv_float_abi_soft + FREG_L fs0, 14*SZREG+ 0*SZFREG(a0) + FREG_L fs1, 14*SZREG+ 1*SZFREG(a0) + FREG_L fs2, 14*SZREG+ 2*SZFREG(a0) + FREG_L fs3, 14*SZREG+ 3*SZFREG(a0) + FREG_L fs4, 14*SZREG+ 4*SZFREG(a0) + FREG_L fs5, 14*SZREG+ 5*SZFREG(a0) + FREG_L fs6, 14*SZREG+ 6*SZFREG(a0) + FREG_L fs7, 14*SZREG+ 7*SZFREG(a0) + FREG_L fs8, 14*SZREG+ 8*SZFREG(a0) + FREG_L fs9, 14*SZREG+ 9*SZFREG(a0) + FREG_L fs10,14*SZREG+10*SZFREG(a0) + FREG_L fs11,14*SZREG+11*SZFREG(a0) +#endif + + seqz a0, a1 + add a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1 + ret + +END (__longjmp) |