x86: lindent arch/i386/math-emu
lindent these files:
errors lines of code errors/KLOC
arch/x86/math-emu/ 2236 9424 237.2
arch/x86/math-emu/ 128 8706 14.7
no other changes. No code changed:
text data bss dec hex filename
5589802 612739 3833856 10036397 9924ad vmlinux.before
5589802 612739 3833856 10036397 9924ad vmlinux.after
the intent of this patch is to ease the automated tracking of kernel
code quality - it's just much easier for us to maintain it if every file
in arch/x86 is supposed to be clean.
NOTE: it is a known problem of lindent that it causes some style damage
of its own, but it's a safe tool (well, except for the gcc array range
initializers extension), so we did the bulk of the changes via lindent,
and did the manual fixups in a followup patch.
the resulting math-emu code has been tested by Thomas Gleixner on a real
386 DX CPU as well, and it works fine.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar
@@ -16,34 +16,34 @@
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#include "status_w.h"
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#include "control_w.h"
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static void fnop(void)
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{
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}
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static void fclex(void)
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{
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partial_status &= ~(SW_Backward|SW_Summary|SW_Stack_Fault|SW_Precision|
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SW_Underflow|SW_Overflow|SW_Zero_Div|SW_Denorm_Op|
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SW_Invalid);
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no_ip_update = 1;
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partial_status &=
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~(SW_Backward | SW_Summary | SW_Stack_Fault | SW_Precision |
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SW_Underflow | SW_Overflow | SW_Zero_Div | SW_Denorm_Op |
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SW_Invalid);
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no_ip_update = 1;
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}
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/* Needs to be externally visible */
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void finit(void)
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{
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control_word = 0x037f;
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partial_status = 0;
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top = 0; /* We don't keep top in the status word internally. */
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fpu_tag_word = 0xffff;
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/* The behaviour is different from that detailed in
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Section 15.1.6 of the Intel manual */
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operand_address.offset = 0;
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operand_address.selector = 0;
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instruction_address.offset = 0;
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instruction_address.selector = 0;
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instruction_address.opcode = 0;
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no_ip_update = 1;
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control_word = 0x037f;
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partial_status = 0;
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top = 0; /* We don't keep top in the status word internally. */
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fpu_tag_word = 0xffff;
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/* The behaviour is different from that detailed in
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Section 15.1.6 of the Intel manual */
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operand_address.offset = 0;
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operand_address.selector = 0;
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instruction_address.offset = 0;
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instruction_address.selector = 0;
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instruction_address.opcode = 0;
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no_ip_update = 1;
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}
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/*
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@@ -54,151 +54,134 @@ void finit(void)
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#define fsetpm fnop
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static FUNC const finit_table[] = {
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feni, fdisi, fclex, finit,
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fsetpm, FPU_illegal, FPU_illegal, FPU_illegal
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feni, fdisi, fclex, finit,
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fsetpm, FPU_illegal, FPU_illegal, FPU_illegal
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};
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void finit_(void)
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{
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(finit_table[FPU_rm])();
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(finit_table[FPU_rm]) ();
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}
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static void fstsw_ax(void)
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{
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*(short *) &FPU_EAX = status_word();
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no_ip_update = 1;
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*(short *)&FPU_EAX = status_word();
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no_ip_update = 1;
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}
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static FUNC const fstsw_table[] = {
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fstsw_ax, FPU_illegal, FPU_illegal, FPU_illegal,
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FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
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fstsw_ax, FPU_illegal, FPU_illegal, FPU_illegal,
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FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
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};
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void fstsw_(void)
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{
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(fstsw_table[FPU_rm])();
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(fstsw_table[FPU_rm]) ();
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}
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static FUNC const fp_nop_table[] = {
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fnop, FPU_illegal, FPU_illegal, FPU_illegal,
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FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
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fnop, FPU_illegal, FPU_illegal, FPU_illegal,
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FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
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};
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void fp_nop(void)
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{
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(fp_nop_table[FPU_rm])();
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(fp_nop_table[FPU_rm]) ();
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}
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void fld_i_(void)
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{
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FPU_REG *st_new_ptr;
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int i;
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u_char tag;
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FPU_REG *st_new_ptr;
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int i;
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u_char tag;
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if ( STACK_OVERFLOW )
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{ FPU_stack_overflow(); return; }
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/* fld st(i) */
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i = FPU_rm;
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if ( NOT_EMPTY(i) )
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{
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reg_copy(&st(i), st_new_ptr);
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tag = FPU_gettagi(i);
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push();
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FPU_settag0(tag);
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}
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else
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{
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if ( control_word & CW_Invalid )
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{
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/* The masked response */
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FPU_stack_underflow();
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if (STACK_OVERFLOW) {
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FPU_stack_overflow();
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return;
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}
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/* fld st(i) */
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i = FPU_rm;
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if (NOT_EMPTY(i)) {
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reg_copy(&st(i), st_new_ptr);
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tag = FPU_gettagi(i);
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push();
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FPU_settag0(tag);
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} else {
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if (control_word & CW_Invalid) {
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/* The masked response */
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FPU_stack_underflow();
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} else
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EXCEPTION(EX_StackUnder);
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}
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else
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EXCEPTION(EX_StackUnder);
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}
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}
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void fxch_i(void)
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{
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/* fxch st(i) */
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FPU_REG t;
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int i = FPU_rm;
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FPU_REG *st0_ptr = &st(0), *sti_ptr = &st(i);
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long tag_word = fpu_tag_word;
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int regnr = top & 7, regnri = ((regnr + i) & 7);
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u_char st0_tag = (tag_word >> (regnr*2)) & 3;
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u_char sti_tag = (tag_word >> (regnri*2)) & 3;
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/* fxch st(i) */
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FPU_REG t;
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int i = FPU_rm;
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FPU_REG *st0_ptr = &st(0), *sti_ptr = &st(i);
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long tag_word = fpu_tag_word;
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int regnr = top & 7, regnri = ((regnr + i) & 7);
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u_char st0_tag = (tag_word >> (regnr * 2)) & 3;
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u_char sti_tag = (tag_word >> (regnri * 2)) & 3;
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if ( st0_tag == TAG_Empty )
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{
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if ( sti_tag == TAG_Empty )
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{
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FPU_stack_underflow();
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FPU_stack_underflow_i(i);
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return;
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if (st0_tag == TAG_Empty) {
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if (sti_tag == TAG_Empty) {
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FPU_stack_underflow();
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FPU_stack_underflow_i(i);
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return;
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}
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if (control_word & CW_Invalid) {
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/* Masked response */
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FPU_copy_to_reg0(sti_ptr, sti_tag);
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}
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FPU_stack_underflow_i(i);
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return;
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}
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if ( control_word & CW_Invalid )
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{
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/* Masked response */
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FPU_copy_to_reg0(sti_ptr, sti_tag);
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if (sti_tag == TAG_Empty) {
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if (control_word & CW_Invalid) {
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/* Masked response */
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FPU_copy_to_regi(st0_ptr, st0_tag, i);
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}
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FPU_stack_underflow();
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return;
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}
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FPU_stack_underflow_i(i);
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return;
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}
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if ( sti_tag == TAG_Empty )
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{
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if ( control_word & CW_Invalid )
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{
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/* Masked response */
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FPU_copy_to_regi(st0_ptr, st0_tag, i);
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}
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FPU_stack_underflow();
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return;
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}
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clear_C1();
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clear_C1();
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reg_copy(st0_ptr, &t);
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reg_copy(sti_ptr, st0_ptr);
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reg_copy(&t, sti_ptr);
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reg_copy(st0_ptr, &t);
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reg_copy(sti_ptr, st0_ptr);
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reg_copy(&t, sti_ptr);
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tag_word &= ~(3 << (regnr*2)) & ~(3 << (regnri*2));
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tag_word |= (sti_tag << (regnr*2)) | (st0_tag << (regnri*2));
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fpu_tag_word = tag_word;
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tag_word &= ~(3 << (regnr * 2)) & ~(3 << (regnri * 2));
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tag_word |= (sti_tag << (regnr * 2)) | (st0_tag << (regnri * 2));
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fpu_tag_word = tag_word;
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}
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void ffree_(void)
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{
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/* ffree st(i) */
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FPU_settagi(FPU_rm, TAG_Empty);
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/* ffree st(i) */
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FPU_settagi(FPU_rm, TAG_Empty);
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}
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void ffreep(void)
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{
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/* ffree st(i) + pop - unofficial code */
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FPU_settagi(FPU_rm, TAG_Empty);
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FPU_pop();
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/* ffree st(i) + pop - unofficial code */
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FPU_settagi(FPU_rm, TAG_Empty);
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FPU_pop();
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}
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void fst_i_(void)
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{
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/* fst st(i) */
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FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
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/* fst st(i) */
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FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
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}
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void fstp_i(void)
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{
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/* fstp st(i) */
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FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
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FPU_pop();
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/* fstp st(i) */
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FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
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FPU_pop();
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}
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