From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/arch/m68k/kernel/signal.c | 69 +++++++++++++++++++---------------
1 files changed, 39 insertions(+), 30 deletions(-)
diff --git a/kernel/arch/m68k/kernel/signal.c b/kernel/arch/m68k/kernel/signal.c
index c67a68b..131e87a 100644
--- a/kernel/arch/m68k/kernel/signal.c
+++ b/kernel/arch/m68k/kernel/signal.c
@@ -47,7 +47,6 @@
#include <asm/setup.h>
#include <linux/uaccess.h>
-#include <asm/pgtable.h>
#include <asm/traps.h>
#include <asm/ucontext.h>
#include <asm/cacheflush.h>
@@ -62,25 +61,25 @@
#define FMT4SIZE 0
#else
#define FORMAT 0
-#define FMT4SIZE sizeof(((struct frame *)0)->un.fmt4)
+#define FMT4SIZE sizeof_field(struct frame, un.fmt4)
#endif
static const int frame_size_change[16] = {
- [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */
- [2] = sizeof(((struct frame *)0)->un.fmt2),
- [3] = sizeof(((struct frame *)0)->un.fmt3),
+ [1] = -1, /* sizeof_field(struct frame, un.fmt1), */
+ [2] = sizeof_field(struct frame, un.fmt2),
+ [3] = sizeof_field(struct frame, un.fmt3),
[4] = FMT4SIZE,
- [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */
- [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */
- [7] = sizeof(((struct frame *)0)->un.fmt7),
- [8] = -1, /* sizeof(((struct frame *)0)->un.fmt8), */
- [9] = sizeof(((struct frame *)0)->un.fmt9),
- [10] = sizeof(((struct frame *)0)->un.fmta),
- [11] = sizeof(((struct frame *)0)->un.fmtb),
- [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */
- [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */
- [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */
- [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */
+ [5] = -1, /* sizeof_field(struct frame, un.fmt5), */
+ [6] = -1, /* sizeof_field(struct frame, un.fmt6), */
+ [7] = sizeof_field(struct frame, un.fmt7),
+ [8] = -1, /* sizeof_field(struct frame, un.fmt8), */
+ [9] = sizeof_field(struct frame, un.fmt9),
+ [10] = sizeof_field(struct frame, un.fmta),
+ [11] = sizeof_field(struct frame, un.fmtb),
+ [12] = -1, /* sizeof_field(struct frame, un.fmtc), */
+ [13] = -1, /* sizeof_field(struct frame, un.fmtd), */
+ [14] = -1, /* sizeof_field(struct frame, un.fmte), */
+ [15] = -1, /* sizeof_field(struct frame, un.fmtf), */
};
static inline int frame_extra_sizes(int f)
@@ -651,7 +650,8 @@
regs->vector = formatvec & 0xfff;
} else {
struct switch_stack *sw = (struct switch_stack *)regs - 1;
- unsigned long buf[fsize / 2]; /* yes, twice as much */
+ /* yes, twice as much as max(sizeof(frame.un.fmt<x>)) */
+ unsigned long buf[sizeof_field(struct frame, un) / 2];
/* that'll make sure that expansion won't crap over data */
if (copy_from_user(buf + fsize / 4, fp, fsize))
@@ -787,7 +787,7 @@
struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
(_NSIG_WORDS > 1 &&
@@ -802,7 +802,7 @@
return regs->d0;
badframe:
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
@@ -812,7 +812,7 @@
struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
@@ -824,7 +824,7 @@
return regs->d0;
badframe:
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
@@ -882,11 +882,17 @@
}
static inline void __user *
-get_sigframe(struct ksignal *ksig, size_t frame_size)
+get_sigframe(struct ksignal *ksig, struct pt_regs *tregs, size_t frame_size)
{
unsigned long usp = sigsp(rdusp(), ksig);
+ unsigned long gap = 0;
- return (void __user *)((usp - frame_size) & -8UL);
+ if (CPU_IS_020_OR_030 && tregs->format == 0xb) {
+ /* USP is unreliable so use worst-case value */
+ gap = 256;
+ }
+
+ return (void __user *)((usp - gap - frame_size) & -8UL);
}
static int setup_frame(struct ksignal *ksig, sigset_t *set,
@@ -904,7 +910,7 @@
return -EFAULT;
}
- frame = get_sigframe(ksig, sizeof(*frame) + fsize);
+ frame = get_sigframe(ksig, tregs, sizeof(*frame) + fsize);
if (fsize)
err |= copy_to_user (frame + 1, regs + 1, fsize);
@@ -928,7 +934,8 @@
err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
(long __user *)(frame->retcode));
#else
- err |= __put_user((void *) ret_from_user_signal, &frame->pretcode);
+ err |= __put_user((long) ret_from_user_signal,
+ (long __user *) &frame->pretcode);
#endif
if (err)
@@ -975,7 +982,7 @@
return -EFAULT;
}
- frame = get_sigframe(ksig, sizeof(*frame));
+ frame = get_sigframe(ksig, tregs, sizeof(*frame));
if (fsize)
err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);
@@ -1007,7 +1014,8 @@
err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4));
#endif
#else
- err |= __put_user((void *) ret_from_user_rt_signal, &frame->pretcode);
+ err |= __put_user((long) ret_from_user_rt_signal,
+ (long __user *) &frame->pretcode);
#endif /* CONFIG_MMU */
if (err)
@@ -1063,7 +1071,7 @@
regs->d0 = -EINTR;
break;
}
- /* fallthrough */
+ fallthrough;
case -ERESTARTNOINTR:
do_restart:
regs->d0 = regs->orig_d0;
@@ -1127,9 +1135,10 @@
void do_notify_resume(struct pt_regs *regs)
{
- if (test_thread_flag(TIF_SIGPENDING))
+ if (test_thread_flag(TIF_NOTIFY_SIGNAL) ||
+ test_thread_flag(TIF_SIGPENDING))
do_signal(regs);
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
--
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