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Date: Mon, 28 Jan 2008 00:45:06 +0300
From: Dmitri Vorobiev <dmitri.vorobiev@...il.com>
To: Paolo Ciarrocchi <paolo.ciarrocchi@...il.com>
CC: Linux Kernel <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] X86: coding style fixes to arch/x86/math-errors.c
Paolo Ciarrocchi пишет:
> This file has not been modified since October so should be
> easy to integrate the following patch.
>
> Before:
> total: 214 errors, 28 warnings, 739 lines checked
>
> After:
> total: 4 errors, 28 warnings, 708 lines checked
>
> Compile tested:
>
> paolo@...lo-desktop:/tmp$ size error.o.*
> text data bss dec hex filename
> 3476 0 0 3476 d94 error.o.after
> 3476 0 0 3476 d94 error.o.before
>
> Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@...il.com>
> ---
>
> The only remaining errors are like the following:
>
> ERROR: need consistent spacing around '*' (ctx:WxB)
> #110: FILE: errors.c:110:
> + FPU_get_user(FPU_modrm, 1 + (u_char __user *) address);
> ^
> Any hint on how to fix them?
>
>
> arch/x86/math-emu/errors.c | 405 ++++++++++++++++++++------------------------
> 1 files changed, 187 insertions(+), 218 deletions(-)
>
> diff --git a/arch/x86/math-emu/errors.c b/arch/x86/math-emu/errors.c
> index a1b0d22..3510abe 100644
> --- a/arch/x86/math-emu/errors.c
> +++ b/arch/x86/math-emu/errors.c
> @@ -43,25 +43,23 @@ void Un_impl(void)
> RE_ENTRANT_CHECK_OFF;
> /* No need to check access_ok(), we have previously fetched these bytes. */
> printk("Unimplemented FPU Opcode at eip=%p : ", (void __user *) address);
> - if ( FPU_CS == __USER_CS )
> - {
> - while ( 1 )
> - {
> + if (FPU_CS == __USER_CS) {
> + while (1) {
> FPU_get_user(byte1, (u_char __user *) address);
> - if ( (byte1 & 0xf8) == 0xd8 ) break;
> + if ((byte1 & 0xf8) == 0xd8)
> + break;
> printk("[%02x]", byte1);
> address++;
> }
> printk("%02x ", byte1);
> FPU_get_user(FPU_modrm, 1 + (u_char __user *) address);
> -
> +
> if (FPU_modrm >= 0300)
> printk("%02x (%02x+%d)\n", FPU_modrm, FPU_modrm & 0xf8, FPU_modrm & 7);
> else
> printk("/%d\n", (FPU_modrm >> 3) & 7);
> }
> - else
> - {
> + else {
> printk("cs selector = %04x\n", FPU_CS);
> }
>
> @@ -76,10 +74,10 @@ void Un_impl(void)
> /*
> Called for opcodes which are illegal and which are known to result in a
> SIGILL with a real 80486.
> - */
> +*/
> void FPU_illegal(void)
> {
> - math_abort(FPU_info,SIGILL);
> + math_abort(FPU_info , SIGILL);
Looks like you're trading bad for worse here.
> }
>
>
> @@ -88,61 +86,69 @@ void FPU_printall(void)
> {
> int i;
> static const char *tag_desc[] = { "Valid", "Zero", "ERROR", "Empty",
> - "DeNorm", "Inf", "NaN" };
> + "DeNorm", "Inf", "NaN" };
> u_char byte1, FPU_modrm;
> unsigned long address = FPU_ORIG_EIP;
>
> RE_ENTRANT_CHECK_OFF;
> /* No need to check access_ok(), we have previously fetched these bytes. */
> printk("At %p:", (void *) address);
> - if ( FPU_CS == __USER_CS )
> - {
> + if (FPU_CS == __USER_CS) {
> #define MAX_PRINTED_BYTES 20
> - for ( i = 0; i < MAX_PRINTED_BYTES; i++ )
> - {
> + for (i = 0; i < MAX_PRINTED_BYTES; i++) {
> FPU_get_user(byte1, (u_char __user *) address);
> - if ( (byte1 & 0xf8) == 0xd8 )
> - {
> + if ((byte1 & 0xf8) == 0xd8) {
> printk(" %02x", byte1);
> break;
> }
> printk(" [%02x]", byte1);
> address++;
> }
> - if ( i == MAX_PRINTED_BYTES )
> + if (i == MAX_PRINTED_BYTES)
> printk(" [more..]\n");
> - else
> - {
> + else {
> FPU_get_user(FPU_modrm, 1 + (u_char __user *) address);
> -
> +
> if (FPU_modrm >= 0300)
> - printk(" %02x (%02x+%d)\n", FPU_modrm, FPU_modrm & 0xf8, FPU_modrm & 7);
> + printk(" %02x (%02x+%d)\n", FPU_modrm, FPU_modrm & 0xf8,
> + FPU_modrm & 7);
> else
> printk(" /%d, mod=%d rm=%d\n",
> (FPU_modrm >> 3) & 7, (FPU_modrm >> 6) & 3, FPU_modrm & 7);
> }
> }
> else
> - {
> printk("%04x\n", FPU_CS);
> - }
>
> partial_status = status_word();
>
> #ifdef DEBUGGING
> -if ( partial_status & SW_Backward ) printk("SW: backward compatibility\n");
> -if ( partial_status & SW_C3 ) printk("SW: condition bit 3\n");
> -if ( partial_status & SW_C2 ) printk("SW: condition bit 2\n");
> -if ( partial_status & SW_C1 ) printk("SW: condition bit 1\n");
> -if ( partial_status & SW_C0 ) printk("SW: condition bit 0\n");
> -if ( partial_status & SW_Summary ) printk("SW: exception summary\n");
> -if ( partial_status & SW_Stack_Fault ) printk("SW: stack fault\n");
> -if ( partial_status & SW_Precision ) printk("SW: loss of precision\n");
> -if ( partial_status & SW_Underflow ) printk("SW: underflow\n");
> -if ( partial_status & SW_Overflow ) printk("SW: overflow\n");
> -if ( partial_status & SW_Zero_Div ) printk("SW: divide by zero\n");
> -if ( partial_status & SW_Denorm_Op ) printk("SW: denormalized operand\n");
> -if ( partial_status & SW_Invalid ) printk("SW: invalid operation\n");
> +if (partial_status & SW_Backward)
> + printk("SW: backward compatibility\n");
> +if (partial_status & SW_C3)
> + printk("SW: condition bit 3\n");
> +if (partial_status & SW_C2)
> + printk("SW: condition bit 2\n");
> +if (partial_status & SW_C1)
> + printk("SW: condition bit 1\n");
> +if (partial_status & SW_C0)
> + printk("SW: condition bit 0\n");
> +if (partial_status & SW_Summary)
> + printk("SW: exception summary\n");
> +if (partial_status & SW_Stack_Fault)
> + printk("SW: stack fault\n");
> +if (partial_status & SW_Precision)
> + printk("SW: loss of precision\n");
> +if (partial_status & SW_Underflow)
> + printk("SW: underflow\n");
> +if (partial_status & SW_Overflow)
> + printk("SW: overflow\n");
> +if (partial_status & SW_Zero_Div)
> + printk("SW: divide by zero\n");
> +if (partial_status & SW_Denorm_Op)
> + printk("SW: denormalized operand\n");
> +if (partial_status & SW_Invalid)
> + printk("SW: invalid operation\n");
While you're at it, please think about adding proper KERN_ facility to these printk() calls.
> #endif /* DEBUGGING */
>
> printk(" SW: b=%d st=%ld es=%d sf=%d cc=%d%d%d%d ef=%d%d%d%d%d%d\n",
Ditto.
> @@ -155,7 +161,7 @@ if ( partial_status & SW_Invalid ) printk("SW: invalid operation\n");
> partial_status & SW_Precision?1:0, partial_status & SW_Underflow?1:0,
> partial_status & SW_Overflow?1:0, partial_status & SW_Zero_Div?1:0,
> partial_status & SW_Denorm_Op?1:0, partial_status & SW_Invalid?1:0);
> -
> +
> printk(" CW: ic=%d rc=%ld%ld pc=%ld%ld iem=%d ef=%d%d%d%d%d%d\n",
Ditto.
> control_word & 0x1000 ? 1 : 0,
> (control_word & 0x800) >> 11, (control_word & 0x400) >> 10,
> @@ -165,12 +171,10 @@ printk(" CW: ic=%d rc=%ld%ld pc=%ld%ld iem=%d ef=%d%d%d%d%d%d\n",
> control_word & SW_Overflow?1:0, control_word & SW_Zero_Div?1:0,
> control_word & SW_Denorm_Op?1:0, control_word & SW_Invalid?1:0);
>
> - for ( i = 0; i < 8; i++ )
> - {
> + for (i = 0; i < 8; i++) {
> FPU_REG *r = &st(i);
> u_char tagi = FPU_gettagi(i);
> - switch (tagi)
> - {
> + switch (tagi) {
> case TAG_Empty:
> continue;
> break;
> @@ -219,78 +223,78 @@ static struct {
> error was detected.
>
> Internal error types:
> - 0x14 in fpu_etc.c
> - 0x1nn in a *.c file:
> - 0x101 in reg_add_sub.c
> - 0x102 in reg_mul.c
> - 0x104 in poly_atan.c
> - 0x105 in reg_mul.c
> - 0x107 in fpu_trig.c
> - 0x108 in reg_compare.c
> - 0x109 in reg_compare.c
> - 0x110 in reg_add_sub.c
> - 0x111 in fpe_entry.c
> - 0x112 in fpu_trig.c
> - 0x113 in errors.c
> - 0x115 in fpu_trig.c
> - 0x116 in fpu_trig.c
> - 0x117 in fpu_trig.c
> - 0x118 in fpu_trig.c
> - 0x119 in fpu_trig.c
> - 0x120 in poly_atan.c
> - 0x121 in reg_compare.c
> - 0x122 in reg_compare.c
> - 0x123 in reg_compare.c
> - 0x125 in fpu_trig.c
> - 0x126 in fpu_entry.c
> - 0x127 in poly_2xm1.c
> - 0x128 in fpu_entry.c
> - 0x129 in fpu_entry.c
> - 0x130 in get_address.c
> - 0x131 in get_address.c
> - 0x132 in get_address.c
> - 0x133 in get_address.c
> - 0x140 in load_store.c
> - 0x141 in load_store.c
> - 0x150 in poly_sin.c
> - 0x151 in poly_sin.c
> - 0x160 in reg_ld_str.c
> - 0x161 in reg_ld_str.c
> - 0x162 in reg_ld_str.c
> - 0x163 in reg_ld_str.c
> - 0x164 in reg_ld_str.c
> - 0x170 in fpu_tags.c
> - 0x171 in fpu_tags.c
> - 0x172 in fpu_tags.c
> - 0x180 in reg_convert.c
> - 0x2nn in an *.S file:
> - 0x201 in reg_u_add.S
> - 0x202 in reg_u_div.S
> - 0x203 in reg_u_div.S
> - 0x204 in reg_u_div.S
> - 0x205 in reg_u_mul.S
> - 0x206 in reg_u_sub.S
> - 0x207 in wm_sqrt.S
> - 0x208 in reg_div.S
> - 0x209 in reg_u_sub.S
> - 0x210 in reg_u_sub.S
> - 0x211 in reg_u_sub.S
> - 0x212 in reg_u_sub.S
> - 0x213 in wm_sqrt.S
> - 0x214 in wm_sqrt.S
> - 0x215 in wm_sqrt.S
> - 0x220 in reg_norm.S
> - 0x221 in reg_norm.S
> - 0x230 in reg_round.S
> - 0x231 in reg_round.S
> - 0x232 in reg_round.S
> - 0x233 in reg_round.S
> - 0x234 in reg_round.S
> - 0x235 in reg_round.S
> - 0x236 in reg_round.S
> - 0x240 in div_Xsig.S
> - 0x241 in div_Xsig.S
> - 0x242 in div_Xsig.S
> + 0x14 in fpu_etc.c
> + 0x1nn in a *.c file:
> + 0x101 in reg_add_sub.c
> + 0x102 in reg_mul.c
> + 0x104 in poly_atan.c
> + 0x105 in reg_mul.c
> + 0x107 in fpu_trig.c
> + 0x108 in reg_compare.c
> + 0x109 in reg_compare.c
> + 0x110 in reg_add_sub.c
> + 0x111 in fpe_entry.c
> + 0x112 in fpu_trig.c
> + 0x113 in errors.c
> + 0x115 in fpu_trig.c
> + 0x116 in fpu_trig.c
> + 0x117 in fpu_trig.c
> + 0x118 in fpu_trig.c
> + 0x119 in fpu_trig.c
> + 0x120 in poly_atan.c
> + 0x121 in reg_compare.c
> + 0x122 in reg_compare.c
> + 0x123 in reg_compare.c
> + 0x125 in fpu_trig.c
> + 0x126 in fpu_entry.c
> + 0x127 in poly_2xm1.c
> + 0x128 in fpu_entry.c
> + 0x129 in fpu_entry.c
> + 0x130 in get_address.c
> + 0x131 in get_address.c
> + 0x132 in get_address.c
> + 0x133 in get_address.c
> + 0x140 in load_store.c
> + 0x141 in load_store.c
> + 0x150 in poly_sin.c
> + 0x151 in poly_sin.c
> + 0x160 in reg_ld_str.c
> + 0x161 in reg_ld_str.c
> + 0x162 in reg_ld_str.c
> + 0x163 in reg_ld_str.c
> + 0x164 in reg_ld_str.c
> + 0x170 in fpu_tags.c
> + 0x171 in fpu_tags.c
> + 0x172 in fpu_tags.c
> + 0x180 in reg_convert.c
> + 0x2nn in an *.S file:
> + 0x201 in reg_u_add.S
> + 0x202 in reg_u_div.S
> + 0x203 in reg_u_div.S
> + 0x204 in reg_u_div.S
> + 0x205 in reg_u_mul.S
> + 0x206 in reg_u_sub.S
> + 0x207 in wm_sqrt.S
> + 0x208 in reg_div.S
> + 0x209 in reg_u_sub.S
> + 0x210 in reg_u_sub.S
> + 0x211 in reg_u_sub.S
> + 0x212 in reg_u_sub.S
> + 0x213 in wm_sqrt.S
> + 0x214 in wm_sqrt.S
> + 0x215 in wm_sqrt.S
> + 0x220 in reg_norm.S
> + 0x221 in reg_norm.S
> + 0x230 in reg_round.S
> + 0x231 in reg_round.S
> + 0x232 in reg_round.S
> + 0x233 in reg_round.S
> + 0x234 in reg_round.S
> + 0x235 in reg_round.S
> + 0x236 in reg_round.S
> + 0x240 in div_Xsig.S
> + 0x241 in div_Xsig.S
> + 0x242 in div_Xsig.S
> */
>
> asmlinkage void FPU_exception(int n)
> @@ -298,25 +302,22 @@ asmlinkage void FPU_exception(int n)
> int i, int_type;
>
> int_type = 0; /* Needed only to stop compiler warnings */
> - if ( n & EX_INTERNAL )
> - {
> + if (n & EX_INTERNAL) {
> int_type = n - EX_INTERNAL;
> n = EX_INTERNAL;
> /* Set lots of exception bits! */
> partial_status |= (SW_Exc_Mask | SW_Summary | SW_Backward);
> }
> - else
> - {
> + else {
> /* Extract only the bits which we use to set the status word */
> n &= (SW_Exc_Mask);
> /* Set the corresponding exception bit */
> partial_status |= n;
> /* Set summary bits iff exception isn't masked */
> - if ( partial_status & ~control_word & CW_Exceptions )
> + if (partial_status & ~control_word & CW_Exceptions)
> partial_status |= (SW_Summary | SW_Backward);
> - if ( n & (SW_Stack_Fault | EX_Precision) )
> - {
> - if ( !(n & SW_C1) )
> + if (n & (SW_Stack_Fault | EX_Precision)) {
> + if (!(n & SW_C1))
> /* This bit distinguishes over- from underflow for a stack fault,
> and roundup from round-down for precision loss. */
> partial_status &= ~SW_C1;
> @@ -324,29 +325,26 @@ asmlinkage void FPU_exception(int n)
> }
>
> RE_ENTRANT_CHECK_OFF;
> - if ( (~control_word & n & CW_Exceptions) || (n == EX_INTERNAL) )
> - {
> + if ((~control_word & n & CW_Exceptions) || (n == EX_INTERNAL)) {
> #ifdef PRINT_MESSAGES
> /* My message from the sponsor */
> printk(FPU_VERSION" "__DATE__" (C) W. Metzenthen.\n");
> #endif /* PRINT_MESSAGES */
> -
> +
> /* Get a name string for error reporting */
> - for (i=0; exception_names[i].type; i++)
> - if ( (exception_names[i].type & n) == exception_names[i].type )
> + for (i = 0; exception_names[i].type; i++)
> + if ((exception_names[i].type & n) == exception_names[i].type)
> break;
> -
> - if (exception_names[i].type)
> - {
> +
> + if (exception_names[i].type) {
> #ifdef PRINT_MESSAGES
> printk("FP Exception: %s!\n", exception_names[i].name);
> #endif /* PRINT_MESSAGES */
> }
> else
> printk("FPU emulator: Unknown Exception: 0x%04x!\n", n);
> -
> - if ( n == EX_INTERNAL )
> - {
> +
> + if (n == EX_INTERNAL) {
> printk("FPU emulator: Internal error type 0x%04x\n", int_type);
> FPU_printall();
> }
> @@ -364,7 +362,7 @@ asmlinkage void FPU_exception(int n)
> RE_ENTRANT_CHECK_ON;
>
> #ifdef __DEBUG__
> - math_abort(FPU_info,SIGFPE);
> + math_abort(FPU_info , SIGFPE);
Why do you need this extra space before the comma?
This file seems to be in need of formatting lines to use tabs instead of spaces.
Thanks,
Dmitri
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