diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2000-12-10 07:56:02 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2000-12-10 07:56:02 +0000 |
| commit | 57826f276a6fc8de0665dd956f78533fe0c25c7e (patch) | |
| tree | 467de18afa9e4a3b3c02073a945a317a850991d7 /arch/mips/kernel/ptrace.c | |
| parent | 5c03a0eb664aa8802f9e3ede6fb6531581302762 (diff) | |
Final round of FPU emulator bits.
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 618f418f8..02ef1a754 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -7,7 +7,10 @@ * Copyright (C) Linus Torvalds * Copyright (C) 1994, 95, 96, 97, 98, 2000 Ralf Baechle * Copyright (C) 1996 David S. Miller + * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999 MIPS Technologies, Inc. */ +#include <linux/config.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/mm.h> @@ -24,6 +27,7 @@ #include <asm/system.h> #include <asm/uaccess.h> #include <asm/bootinfo.h> +#include <asm/cpu.h> asmlinkage int sys_ptrace(long request, long pid, long addr, long data) { @@ -131,13 +135,22 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) break; case FPR_BASE ... FPR_BASE + 31: if (child->used_math) { + unsigned long long *fregs + = (unsigned long long *) + &child->thread.fpu.hard.fp_regs[0]; +#ifdef CONFIG_MIPS_FPU_EMULATOR + if(!(mips_cpu.options & MIPS_CPU_FPU)) { + fregs = (unsigned long long *) + &child->thread.fpu.soft.regs[0]; + } else +#endif if (last_task_used_math == child) { enable_cp1(); save_fp(child); disable_cp1(); last_task_used_math = NULL; } - tmp = child->thread.fpu.hard.fp_regs[addr - 32]; + tmp = (unsigned long) fregs[(addr - 32)]; } else { tmp = -1; /* FP not yet used */ } @@ -158,6 +171,11 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) tmp = regs->lo; break; case FPC_CSR: +#ifdef CONFIG_MIPS_FPU_EMULATOR + if(!(mips_cpu.options & MIPS_CPU_FPU)) + tmp = child->thread.fpu.soft.sr; + else +#endif tmp = child->thread.fpu.hard.control; break; case FPC_EIR: { /* implementation / version register */ @@ -198,9 +216,17 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) regs->regs[addr] = data; break; case FPR_BASE ... FPR_BASE + 31: { - unsigned int *fregs; + unsigned long long *fregs; + fregs = (unsigned long long *)&child->thread.fpu.hard.fp_regs[0]; if (child->used_math) { - if (last_task_used_math == child) { + if (last_task_used_math == child) +#ifdef CONFIG_MIPS_FPU_EMULATOR + if(!(mips_cpu.options & MIPS_CPU_FPU)) { + fregs = (unsigned long long *) + &child->thread.fpu.soft.regs[0]; + } else +#endif + { enable_cp1(); save_fp(child); disable_cp1(); @@ -213,7 +239,6 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) sizeof(child->thread.fpu.hard)); child->thread.fpu.hard.control = 0; } - fregs = child->thread.fpu.hard.fp_regs; fregs[addr - FPR_BASE] = data; break; } @@ -227,6 +252,11 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) regs->lo = data; break; case FPC_CSR: +#ifdef CONFIG_MIPS_FPU_EMULATOR + if(!(mips_cpu.options & MIPS_CPU_FPU)) + child->thread.fpu.soft.sr = data; + else +#endif child->thread.fpu.hard.control = data; break; default: |