| Message ID | 20240802083423.142365-11-itachis@FreeBSD.org |
|---|---|
| State | New |
| Headers | show |
| Series | bsd-user: Comprehensive RISCV support | expand |
On 8/2/24 18:34, Ajeet Singh wrote: > From: Mark Corbin <mark.corbin@embecsom.com> > > Implemented functions for setting up and initializing threads in the > RISC-V architecture. > The 'target_thread_set_upcall' function sets up the stack pointer, > program counter, and function argument for new threads. > The 'target_thread_init' function initializes thread registers based on > the provided image information. > > Signed-off-by: Mark Corbin <mark.corbin@embecsom.com> > Signed-off-by: Ajeet Singh <itachis@FreeBSD.org> > Co-authored-by: Jessica Clarke <jrtc27@jrtc27.com> > Co-authored-by: Kyle Evans <kevans@FreeBSD.org> > --- > bsd-user/riscv/target_arch_thread.h | 47 +++++++++++++++++++++++++++++ > 1 file changed, 47 insertions(+) > create mode 100644 bsd-user/riscv/target_arch_thread.h > > diff --git a/bsd-user/riscv/target_arch_thread.h b/bsd-user/riscv/target_arch_thread.h > new file mode 100644 > index 0000000000..faabb9fb45 > --- /dev/null > +++ b/bsd-user/riscv/target_arch_thread.h > @@ -0,0 +1,47 @@ > +/* > + * RISC-V thread support > + * > + * Copyright (c) 2019 Mark Corbin > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; either version 2 of the License, or > + * (at your option) any later version. > + * > + * This program 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 General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, see <http://www.gnu.org/licenses/>. > + */ > + > +#ifndef TARGET_ARCH_THREAD_H > +#define TARGET_ARCH_THREAD_H > + > +/* Compare with cpu_set_upcall() in riscv/riscv/vm_machdep.c */ > +static inline void target_thread_set_upcall(CPURISCVState *regs, > + abi_ulong entry, abi_ulong arg, abi_ulong stack_base, > + abi_ulong stack_size) > +{ > + abi_ulong sp; > + > + sp = (abi_ulong)(stack_base + stack_size) & ~(16 - 1); > + > + regs->gpr[xSP] = sp; > + regs->pc = entry; > + regs->gpr[xA0] = arg; > +} > + > +/* Compare with exec_setregs() in riscv/riscv/machdep.c */ exec_machdep.c. > +static inline void target_thread_init(struct target_pt_regs *regs, > + struct image_info *infop) > +{ > + regs->sepc = infop->entry; > + regs->regs[xRA] = infop->entry; > + regs->regs[10] = infop->start_stack; /* a0 */ xA0 > + regs->regs[xSP] = infop->start_stack & ~(16 - 1); ROUND_DOWN. r~
On Fri, Aug 2, 2024 at 7:30 AM Richard Henderson < richard.henderson@linaro.org> wrote: > On 8/2/24 18:34, Ajeet Singh wrote: > > From: Mark Corbin <mark.corbin@embecsom.com> > > > > Implemented functions for setting up and initializing threads in the > > RISC-V architecture. > > The 'target_thread_set_upcall' function sets up the stack pointer, > > program counter, and function argument for new threads. > > The 'target_thread_init' function initializes thread registers based on > > the provided image information. > > > > Signed-off-by: Mark Corbin <mark.corbin@embecsom.com> > > Signed-off-by: Ajeet Singh <itachis@FreeBSD.org> > > Co-authored-by: Jessica Clarke <jrtc27@jrtc27.com> > > Co-authored-by: Kyle Evans <kevans@FreeBSD.org> > > --- > > bsd-user/riscv/target_arch_thread.h | 47 +++++++++++++++++++++++++++++ > > 1 file changed, 47 insertions(+) > > create mode 100644 bsd-user/riscv/target_arch_thread.h > > > > diff --git a/bsd-user/riscv/target_arch_thread.h > b/bsd-user/riscv/target_arch_thread.h > > new file mode 100644 > > index 0000000000..faabb9fb45 > > --- /dev/null > > +++ b/bsd-user/riscv/target_arch_thread.h > > @@ -0,0 +1,47 @@ > > +/* > > + * RISC-V thread support > > + * > > + * Copyright (c) 2019 Mark Corbin > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License as published by > > + * the Free Software Foundation; either version 2 of the License, or > > + * (at your option) any later version. > > + * > > + * This program 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 General Public License for more details. > > + * > > + * You should have received a copy of the GNU General Public License > > + * along with this program; if not, see <http://www.gnu.org/licenses/ > >. > > + */ > > + > > +#ifndef TARGET_ARCH_THREAD_H > > +#define TARGET_ARCH_THREAD_H > > + > > +/* Compare with cpu_set_upcall() in riscv/riscv/vm_machdep.c */ > > +static inline void target_thread_set_upcall(CPURISCVState *regs, > > + abi_ulong entry, abi_ulong arg, abi_ulong stack_base, > > + abi_ulong stack_size) > > +{ > > + abi_ulong sp; > > + > > + sp = (abi_ulong)(stack_base + stack_size) & ~(16 - 1); > > + > > + regs->gpr[xSP] = sp; > > + regs->pc = entry; > > + regs->gpr[xA0] = arg; > > +} > > + > > +/* Compare with exec_setregs() in riscv/riscv/machdep.c */ > > exec_machdep.c. > > > +static inline void target_thread_init(struct target_pt_regs *regs, > > + struct image_info *infop) > > +{ > > + regs->sepc = infop->entry; > > + regs->regs[xRA] = infop->entry; > > + regs->regs[10] = infop->start_stack; /* a0 */ > > xA0 > > > + regs->regs[xSP] = infop->start_stack & ~(16 - 1); > > ROUND_DOWN. > Oh, I should do a pass through our tree for rounding like this to add this macro. Warner > > r~ >
diff --git a/bsd-user/riscv/target_arch_thread.h b/bsd-user/riscv/target_arch_thread.h new file mode 100644 index 0000000000..faabb9fb45 --- /dev/null +++ b/bsd-user/riscv/target_arch_thread.h @@ -0,0 +1,47 @@ +/* + * RISC-V thread support + * + * Copyright (c) 2019 Mark Corbin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef TARGET_ARCH_THREAD_H +#define TARGET_ARCH_THREAD_H + +/* Compare with cpu_set_upcall() in riscv/riscv/vm_machdep.c */ +static inline void target_thread_set_upcall(CPURISCVState *regs, + abi_ulong entry, abi_ulong arg, abi_ulong stack_base, + abi_ulong stack_size) +{ + abi_ulong sp; + + sp = (abi_ulong)(stack_base + stack_size) & ~(16 - 1); + + regs->gpr[xSP] = sp; + regs->pc = entry; + regs->gpr[xA0] = arg; +} + +/* Compare with exec_setregs() in riscv/riscv/machdep.c */ +static inline void target_thread_init(struct target_pt_regs *regs, + struct image_info *infop) +{ + regs->sepc = infop->entry; + regs->regs[xRA] = infop->entry; + regs->regs[10] = infop->start_stack; /* a0 */ + regs->regs[xSP] = infop->start_stack & ~(16 - 1); +} + +#endif /* TARGET_ARCH_THREAD_H */