add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/kernel/ptrace32.c
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@@ -30,7 +30,6 @@
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 #include <asm/fpu.h>
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 #include <asm/mipsregs.h>
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 #include <asm/mipsmtregs.h>
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-#include <asm/pgtable.h>
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 #include <asm/page.h>
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 #include <asm/reg.h>
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 #include <asm/syscall.h>
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@@ -82,7 +81,6 @@
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 	/* Read the word at location addr in the USER area. */
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 	case PTRACE_PEEKUSR: {
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 		struct pt_regs *regs;
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-		union fpureg *fregs;
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 		unsigned int tmp;
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 		regs = task_pt_regs(child);
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@@ -92,7 +90,10 @@
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 		case 0 ... 31:
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 			tmp = regs->regs[addr];
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 			break;
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-		case FPR_BASE ... FPR_BASE + 31:
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+#ifdef CONFIG_MIPS_FP_SUPPORT
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+		case FPR_BASE ... FPR_BASE + 31: {
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+			union fpureg *fregs;
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+
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 			if (!tsk_used_math(child)) {
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 				/* FP not yet used */
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 				tmp = -1;
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@@ -111,6 +112,15 @@
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 			}
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 			tmp = get_fpr64(&fregs[addr - FPR_BASE], 0);
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 			break;
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+		}
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+		case FPC_CSR:
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+			tmp = child->thread.fpu.fcr31;
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+			break;
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+		case FPC_EIR:
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+			/* implementation / version register */
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+			tmp = boot_cpu_data.fpu_id;
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+			break;
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+#endif /* CONFIG_MIPS_FP_SUPPORT */
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 		case PC:
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 			tmp = regs->cp0_epc;
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 			break;
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@@ -125,13 +135,6 @@
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 			break;
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 		case MMLO:
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 			tmp = regs->lo;
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-			break;
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-		case FPC_CSR:
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-			tmp = child->thread.fpu.fcr31;
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-			break;
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-		case FPC_EIR:
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-			/* implementation / version register */
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-			tmp = boot_cpu_data.fpu_id;
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 			break;
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 		case DSP_BASE ... DSP_BASE + 5: {
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 			dspreg_t *dregs;
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@@ -203,6 +206,7 @@
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 				 mips_syscall_is_indirect(child, regs))
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 				mips_syscall_update_nr(child, regs);
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 			break;
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+#ifdef CONFIG_MIPS_FP_SUPPORT
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 		case FPR_BASE ... FPR_BASE + 31: {
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 			union fpureg *fregs = get_fpu_regs(child);
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@@ -225,6 +229,10 @@
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 			set_fpr64(&fregs[addr - FPR_BASE], 0, data);
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 			break;
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 		}
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+		case FPC_CSR:
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+			child->thread.fpu.fcr31 = data;
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+			break;
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+#endif /* CONFIG_MIPS_FP_SUPPORT */
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 		case PC:
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 			regs->cp0_epc = data;
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 			break;
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@@ -233,9 +241,6 @@
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 			break;
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 		case MMLO:
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 			regs->lo = data;
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-			break;
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-		case FPC_CSR:
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-			child->thread.fpu.fcr31 = data;
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 			break;
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 		case DSP_BASE ... DSP_BASE + 5: {
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 			dspreg_t *dregs;
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@@ -274,6 +279,7 @@
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 				(struct user_pt_regs __user *) (__u64) data);
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 		break;
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+#ifdef CONFIG_MIPS_FP_SUPPORT
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 	case PTRACE_GETFPREGS:
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 		ret = ptrace_getfpregs(child, (__u32 __user *) (__u64) data);
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 		break;
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@@ -281,7 +287,7 @@
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 	case PTRACE_SETFPREGS:
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 		ret = ptrace_setfpregs(child, (__u32 __user *) (__u64) data);
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 		break;
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-
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+#endif
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 	case PTRACE_GET_THREAD_AREA:
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 		ret = put_user(task_thread_info(child)->tp_value,
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 				(unsigned int __user *) (unsigned long) data);