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2010-05-27 Magnus Granberg <zorry@gentoo.org>
* gcc/esp.h New file to support --enable-esp
Version 20100527.1
--- gcc/esp.h 2010-04-09 16:14:00.000000000 +0200
+++ gcc/esp.h 2010-04-29 21:30:47.000000000 +0200
@@ -0,0 +1,145 @@
+/* License terms see GNU GENERAL PUBLIC LICENSE Version 3.
+ * Version 20100527.1
+ * Magnus Granberg (Zorry) <zorry@gentoo.org> */
+#ifndef GCC_ESP_H
+#define GCC_ESP_H
+
+/* This file will add -fstack-protector-all, -fPIE, -pie and -z now
+ as default if the defines and the spec allow it.
+ Added a hack for gcc-specs-* in toolchain-funcs.eclass and _filter-hardened in flag-o-matic.eclass
+ to support older hardened GCC patches and we don't need to change the code on gcc-specs-* and _filter-hardened.
+ This will add some unsupported upstream commands options as -nopie and -nonow.
+ -D__KERNEL__ is added so we don't have -fPIE, -pie and -fstack-protector-all when building kernels.
+ ESP_CC1_SPEC is added to CC1_SPEC.
+ ESP_CC1_STRICT_OVERFLOW_SPEC is added so we don't disable the strict-overflow check.
+ ESP_LINK_PIE_CHECK_SPEC check for -pie, -p, -pg, -profile and -static.
+ ENABLE_CRTBEGINTS add support for crtbeginTS.o, build -static with -fPIE or -fpie.
+*/
+#ifdef ENABLE_ESP
+
+ /* Hack to support gcc-specs-* in toolchain-funcs.eclass and _filter-hardened in flag-o-matic.eclass */
+ #define ESP_CC1_SPEC " %(esp_cc1_ssp) %(esp_cc1_pie) %(esp_cc1_strict_overflow)"
+ #if defined ( EFAULT_SSP ) || defined ( EFAULT_PIE_SSP )
+ #define ESP_CC1_SSP_SPEC "%{!fno-stack-protector: %{!fno-stack-protector-all: }}"
+ #else
+ #define ESP_CC1_SSP_SPEC ""
+ #endif
+ #if defined ( EFAULT_PIE ) || defined ( EFAULT_PIE_SSP )
+ #define ESP_CC1_PIE_SPEC "%{!nopie: }"
+ #else
+ #define ESP_CC1_PIE_SPEC ""
+ #endif
+ #define ESP_CC1_STRICT_OVERFLOW_SPEC "%{!fstrict-overflow:%{!fno-strict-overflow: -fno-strict-overflow}}"
+
+ /* ESP_LINK_SPEC is added to LINK_PIE_SPEC if esp is enable
+ -z now will be added if we don't have -vanilla spec. We do a -pie incompatible check
+ Don't remove the specs in the end */
+ #define ESP_LINK_SPEC "%(esp_link_now) %(esp_link_pie_check) "
+ #define ESP_LINK_NOW_SPEC "%{!nonow:-z now}"
+
+ /* We use ESP_COMMAND_OPTIONS_SPEC to add pie command-line options. */
+ #define ESP_COMMAND_OPTIONS_SPEC "%{!D__KERNEL__:%{!nopie:%(esp_options_pie) %(esp_link_pie)}}"
+
+ /* ESP_OPTIONS_SPEC is added to the compiler spec in gcc/gcc.c */
+ #define ESP_OPTIONS_SPEC "%(esp_options_ssp)"
+
+ /* ESP_CPP_OPTIONS_SPEC is added to the cpp_options spec in gcc/gcc.c
+ For precompiling headers. */
+ #define ESP_CPP_OPTIONS_SPEC "%(esp_options_ssp)"
+
+ /* This will add -fstack-protector-all if we don't have -nostdlib -nodefaultlibs -fno-stack-protector -fstack-protector
+ -fstack-protector-all and we have EFAULT_SSP or EFAULT_PIE_SSP defined. */
+ #if defined ( EFAULT_SSP ) || defined ( EFAULT_PIE_SSP )
+ #define ESP_OPTIONS_SSP_SPEC \
+ "%{!D__KERNEL__:%{!nostdlib:%{!nodefaultlibs: %{!fno-stack-protector: \
+ %{!fstack-protector:%{!fstack-protector-all:-fstack-protector-all}}}}}}"
+ #else
+ #define ESP_OPTIONS_SSP_SPEC ""
+ #endif
+
+ /* If EFAULT_PIE or EFAULT_PIE_SSP is defined we will add -fPIE -pie */
+ #if defined ( EFAULT_PIE ) || defined ( EFAULT_PIE_SSP )
+
+ /* This will add -fPIE if we don't have -pie -fpic -fPIC -fpie -fPIE -fno-pic -fno-PIC -fno-pie -fno-PIE -shared -static
+ -nostdlib -nostartfiles. */
+ /* With ENABLE_CRTBEGINTS we don't need to check for -static */
+ #ifdef ENABLE_CRTBEGINTS
+ #define ESP_OPTIONS_PIE_SPEC \
+ "%{!pie: %{!fpic:%{!fPIC:%{!fpie:%{!fPIE: %{!fno-pic:%{!fno-PIC:%{!fno-pie:%{!fno-PIE: \
+ %{!shared: %{!nostdlib: %{!nostartfiles:-fPIE}} } }}}} }}}} }"
+ #else
+ #define ESP_OPTIONS_PIE_SPEC \
+ "%{!pie: %{!fpic:%{!fPIC:%{!fpie:%{!fPIE: %{!fno-pic:%{!fno-PIC:%{!fno-pie:%{!fno-PIE: \
+ %{!shared: %{!static: %{!nostdlib: %{!nostartfiles:-fPIE}} } }}}} }}}} }}"
+ #endif
+
+ /* This will add -pie if we don't have -pie -A -fno-pic -fno-PIC -fno-pie -fno-PIE -shared -static -r -nostdlib
+ -nostartfiles */
+ /* With ENABLE_CRTBEGINTS we don't need to check for -static
+ and we add -pie only to get the start and endfiles. -pie will not go to the linker. */
+ #ifdef ENABLE_CRTBEGINTS
+ #define ESP_LINK_PIE_SPEC \
+ "%{!pie:%{!A:%{!fno-pie:%{!fno-PIE:%{!fno-pic:%{!fno-PIC:%{!shared:%{!r: \
+ %{!nostdlib:%{!nostartfiles:-pie}}}}}}}}}}"
+ #else
+ #define ESP_LINK_PIE_SPEC \
+ "%{!pie:%{!A:%{!fno-pie:%{!fno-PIE:%{!fno-pic:%{!fno-PIC:%{!shared:%{!static:%{!r: \
+ %{!nostdlib:%{!nostartfiles:-pie}}}}}}}}}}}"
+ #endif
+
+ /* This will check if -pie is set when (-static) -pg -p -profile. If set it will make gcc print out
+ "-pie and (static)|pg|p|profile are incompatible when linking" */
+ /* With ENABLE_CRTBEGINTS we don't need to check for -static */
+ #ifdef ENABLE_CRTBEGINTS
+ #define ESP_LINK_PIE_CHECK_SPEC \
+ "%{pie:%{pg|p|profile:%e-pie and -pg|p|profile are incompatible when linking}}"
+ #else
+ #define ESP_LINK_PIE_CHECK_SPEC \
+ "%{pie:%{static|pg|p|profile:%e-pie and -static|pg|p|profile are incompatible when linking}}"
+ #endif
+
+ /* We don't pass -pie to the linker when -static. */
+ #ifdef ENABLE_CRTBEGINTS
+ #define LINK_PIE_SPEC "%{!static:%{pie:-pie}} %(esp_link)"
+ #else
+ #define LINK_PIE_SPEC "%{pie:-pie} %(esp_link)"
+ #endif
+
+ #else
+ #define ESP_OPTIONS_PIE_SPEC ""
+ #define ESP_LINK_PIE_CHECK_SPEC ""
+ #define ESP_LINK_PIE_SPEC ""
+ #define LINK_PIE_SPEC "%{pie:-pie} %(esp_link)"
+ #endif
+
+ /* We add extra spec name's to the EXTRA_SPECS list */
+ #define ESP_EXTRA_SPECS \
+ { "esp_cc1", ESP_CC1_SPEC }, \
+ { "esp_cc1_pie", ESP_CC1_PIE_SPEC }, \
+ { "esp_cc1_ssp", ESP_CC1_SSP_SPEC }, \
+ { "esp_cc1_strict_overflow", ESP_CC1_STRICT_OVERFLOW_SPEC }, \
+ { "esp_link", ESP_LINK_SPEC }, \
+ { "esp_link_now", ESP_LINK_NOW_SPEC }, \
+ { "esp_link_pie", ESP_LINK_PIE_SPEC }, \
+ { "esp_link_pie_check", ESP_LINK_PIE_CHECK_SPEC }, \
+ { "esp_command_options", ESP_COMMAND_OPTIONS_SPEC }, \
+ { "esp_cpp_options", ESP_CPP_OPTIONS_SPEC }, \
+ { "esp_options", ESP_OPTIONS_SPEC }, \
+ { "esp_options_pie", ESP_OPTIONS_PIE_SPEC }, \
+ { "esp_options_ssp", ESP_OPTIONS_SSP_SPEC }
+
+ static const char *esp_command_options_spec = ESP_COMMAND_OPTIONS_SPEC;
+ static const char *cc1_spec = CC1_SPEC ESP_CC1_SPEC;
+
+#else /* If not ESP_ENABLE defined do this. */
+
+ #define ESP_OPTIONS_SPEC ""
+ #define ESP_CPP_OPTIONS_SPEC ""
+
+ /* We add extra spec name's to the EXTRA_SPECS list */
+ #define ESP_EXTRA_SPECS \
+ { "esp_options", ESP_OPTIONS_SPEC }, \
+ { "esp_cpp_options", ESP_CPP_OPTIONS_SPEC }
+
+#endif
+#endif /* End GCC_ESP_H */
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