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Update TODO list regarding non-queuing of signal actions; Add comments in code at areas where the issue applies.

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This commit is contained in:
Gregory Nutt
2019-02-04 08:35:03 -06:00
parent 1bbcd1ad96
commit b1001b4e50
21 changed files with 159 additions and 31 deletions
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arch/arm/include/arm/irq.h
+6 -1
View File
@@ -138,15 +138,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during
* signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
arch/arm/include/armv6-m/irq.h
+5
View File
@@ -173,6 +173,11 @@ struct xcptcontext
/* These are saved copies of LR, PRIMASK, and xPSR used during
* signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
arch/arm/include/armv7-a/irq.h
+8 -2
View File
@@ -229,14 +229,20 @@ struct xcpt_syscall_s
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during signal processing. */
/* These are saved copies of LR and CPSR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
uint32_t saved_cpsr;
arch/arm/include/armv7-m/irq.h
+5
View File
@@ -128,6 +128,11 @@ struct xcptcontext
/* These are saved copies of LR, PRIMASK, and xPSR used during
* signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
arch/arm/include/armv7-r/irq.h
+8 -2
View File
@@ -229,14 +229,20 @@ struct xcpt_syscall_s
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during signal processing. */
/* These are saved copies of LR and CPSR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
uint32_t saved_cpsr;
arch/avr/include/avr/irq.h
+8 -2
View File
@@ -106,14 +106,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of PC and SR used during signal processing.*/
/* These are saved copies of PC and SR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint8_t saved_pc1;
uint8_t saved_pc0;
arch/avr/include/avr32/irq.h
+8 -2
View File
@@ -107,14 +107,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of PC and SR used during signal processing.*/
/* These are saved copies of PC and SR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
uint32_t saved_sr;
arch/mips/include/mips32/irq.h
+5
View File
@@ -338,6 +338,11 @@ struct xcptcontext
/* These additional register save locations are used to implement the
* signal delivery trampoline.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_epc; /* Trampoline PC */
arch/misoc/include/lm32/irq.h
+5
View File
@@ -204,6 +204,11 @@ struct xcptcontext
/* These additional register save locations are used to implement the
* signal delivery trampoline.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_epc; /* Trampoline PC */
arch/or1k/include/mor1kx/irq.h
+6 -1
View File
@@ -171,15 +171,20 @@ struct xcptcontext
uint32_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during
* signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
arch/renesas/include/m16c/irq.h
+8 -2
View File
@@ -242,14 +242,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and SR used during signal processing. */
/* These are saved copies of LR and SR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint8_t saved_pc[2];
uint8_t saved_flg;
arch/renesas/include/sh1/irq.h
+8 -2
View File
@@ -459,14 +459,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and SR used during signal processing. */
/* These are saved copies of LR and SR used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
uint32_t saved_sr;
arch/risc-v/include/rv32im/irq.h
+5
View File
@@ -312,6 +312,11 @@ struct xcptcontext
/* These additional register save locations are used to implement the
* signal delivery trampoline.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_epc; /* Trampoline PC */
arch/x86/include/i486/irq.h
+6 -1
View File
@@ -166,15 +166,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of instruction pointer and EFLAGS used during
* signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_eip;
arch/xtensa/include/irq.h
+8 -2
View File
@@ -146,14 +146,20 @@
struct xcptcontext
{
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of registers used during signal processing. */
/* These are saved copies of registers used during signal processing.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc;
uint32_t saved_ps;
arch/z16/include/z16f/irq.h
+8 -2
View File
@@ -178,14 +178,20 @@ struct xcptcontext
uint16_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following retains that state during signal execution */
/* The following retains that state during signal execution.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint32_t saved_pc; /* Saved return address */
uint16_t saved_i; /* Saved interrupt state */
arch/z80/include/ez80/irq.h
+8 -2
View File
@@ -213,14 +213,20 @@ struct xcptcontext
chipreg_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following retains that state during signal execution */
/* The following retains that state during signal execution
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
chipreg_t saved_pc; /* Saved return address */
chipreg_t saved_i; /* Saved interrupt state */
arch/z80/include/z180/irq.h
+8 -2
View File
@@ -186,14 +186,20 @@ struct xcptcontext
chipreg_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following retains that state during signal execution */
/* The following retains that state during signal execution
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint16_t saved_pc; /* Saved return address */
uint16_t saved_i; /* Saved interrupt state */
arch/z80/include/z8/irq.h
+11 -5
View File
@@ -319,17 +319,23 @@ struct xcptcontext
chipreg_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following retains that state during signal execution */
/* The following retains that state during signal execution
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint16_t saved_pc; /* Saved return address */
uint16_t saved_irqctl; /* Saved interrupt state */
uint16_t saved_pc; /* Saved return address */
uint16_t saved_irqctl; /* Saved interrupt state */
#endif
};
#endif
arch/z80/include/z80/irq.h
+8 -2
View File
@@ -103,14 +103,20 @@ struct xcptcontext
chipreg_t regs[XCPTCONTEXT_REGS];
#ifndef CONFIG_DISABLE_SIGNALS
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following retains that state during signal execution */
/* The following retains that state during signal execution.
*
* REVISIT: Because there is only one copy of these save areas,
* only a single signal handler can be active. This precludes
* queuing of signal actions. As a result, signals received while
* another signal handler is executing will be ignored!
*/
uint16_t saved_pc; /* Saved return address */
uint16_t saved_i; /* Saved interrupt state */