7b3702e2dd
Successfully tested both the gcc4 compiler on x86_64 with a simple program (fbdebug) and the gcc4-armhf cross-compiler to build a very old u-boot port for Galaxy Nexus (a MR will follow soon) which failed to boot with either newer version (6 and 8). [skip ci]: already went through
135 lines
6.1 KiB
Diff
135 lines
6.1 KiB
Diff
2014-05-12 Magnus Granberg <zorry@gentoo.org>
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* gcc/esp.h New file to support --enable-esp
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Version 20140512.1
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--- a/gcc/config/esp.h 2010-04-09 16:14:00.000000000 +0200
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+++ b/gcc/config/esp.h 2012-06-23 01:00:31.248348491 +0200
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@@ -0,0 +1,127 @@
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+/* License terms see GNU GENERAL PUBLIC LICENSE Version 3.
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+ * Version 20140512.1
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+ * Magnus Granberg (Zorry) <zorry@gentoo.org> */
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+#ifndef GCC_ESP_H
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+#define GCC_ESP_H
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+
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+/* This file will add -fstack-protector-all, -fstack-check, -fPIE, -pie and -z now
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+ as default if the defines and the spec allow it.
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+ Added a hack for gcc-specs-* in toolchain-funcs.eclass and _filter-hardened in flag-o-matic.eclass
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+ to support older hardened GCC patches and we don't need to change the code on gcc-specs-* and _filter-hardened.
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+ This will add some unsupported upstream commands options as -nopie and -nonow.
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+ -D__KERNEL__ is added so we don't have -fPIE, -pie and -fstack-protector-all and -fstack-check when building kernels.
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+ ESP_CC1_SPEC is added to CC1_SPEC.
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+ ESP_CC1_STRICT_OVERFLOW_SPEC is added so we don't disable the strict-overflow check.
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+ ESP_LINK_PIE_CHECK_SPEC check for -pie, -p, -pg, -profile and -static.
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+ ENABLE_CRTBEGINP add support for crtbeginP.o, build -static with -fPIE or -fpie.
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+*/
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+#ifdef ENABLE_ESP
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+
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+ /* Hack to support gcc-specs-* in toolchain-funcs.eclass and _filter-hardened in flag-o-matic.eclass */
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+ #define ESP_CC1_SPEC " %(esp_cc1_ssp) %(esp_cc1_pie) %(esp_cc1_strict_overflow)"
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+ #if defined ( EFAULT_SSP ) || defined ( EFAULT_PIE_SSP )
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+ #define ESP_CC1_SSP_SPEC "%{!fno-stack-protector: %{!fno-stack-protector-all: %{!fno-stack-check: }}}"
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+ #else
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+ #define ESP_CC1_SSP_SPEC ""
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+ #endif
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+ #if defined ( EFAULT_PIE ) || defined ( EFAULT_PIE_SSP )
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+ #define ESP_CC1_PIE_SPEC "%{!nopie: }"
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+ #else
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+ #define ESP_CC1_PIE_SPEC ""
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+ #endif
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+ #define ESP_CC1_STRICT_OVERFLOW_SPEC "%{!fstrict-overflow:%{!fno-strict-overflow: -fno-strict-overflow}}"
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+
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+ /* ESP_LINK_SPEC is added to LINK_PIE_SPEC if esp is enable
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+ -z now will be added if we don't have -vanilla spec. We do a -pie incompatible check
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+ Don't remove the specs in the end */
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+ #define ESP_LINK_SPEC "%(esp_link_now) %(esp_link_pie_check) "
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+ #define ESP_LINK_NOW_SPEC "%{!nonow:-z now}"
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+
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+ /* We use ESP_DRIVER_SELF_SPEC to add pie and ssp command-line options. */
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+ #define ESP_DRIVER_SELF_SPEC "%{D__KERNEL__:;:%{!nopie:%(esp_options_pie) \
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+ %(esp_link_pie)} %(esp_options_ssp) }"
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+
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+ /* This will add -fstack-protector-all if we don't have -nostdlib -nodefaultlibs -fno-stack-protector -fstack-protector
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+ -fstack-protector-all and we have EFAULT_SSP or EFAULT_PIE_SSP defined. */
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+ #if defined ( EFAULT_SSP ) || defined ( EFAULT_PIE_SSP )
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+ #define ESP_OPTIONS_SSP_SPEC \
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+ "%{nostdlib|ffreestanding|fno-stack-protector|fstack-protector| \
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+ fstack-protector-all|fstack-protector-strong:;:-fstack-protector-all} \
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+ %{fstack-check|fstack-check=*:;: -fstack-check}"
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+ #else
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+ #define ESP_OPTIONS_SSP_SPEC ""
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+ #endif
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+
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+ /* If EFAULT_PIE or EFAULT_PIE_SSP is defined we will add -fPIE -pie */
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+ #if defined ( EFAULT_PIE ) || defined ( EFAULT_PIE_SSP )
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+
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+ /* This will add -fPIE if we don't have -pie -fpic -fPIC -fpie -fPIE -fno-pic -fno-PIC -fno-pie -fno-PIE -shared -static
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+ -nostdlib -nostartfiles. */
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+ /* With ENABLE_CRTBEGINP we don't need to check for -static */
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+ #ifdef ENABLE_CRTBEGINP
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+ #define ESP_OPTIONS_PIE_SPEC \
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+ "%{!pie: %{!fpic:%{!fPIC:%{!fpie:%{!fPIE: %{!fno-pic:%{!fno-PIC:%{!fno-pie:%{!fno-PIE: \
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+ %{!shared: %{!nostdlib: %{!nostartfiles:-fPIE}} } }}}} }}}} }"
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+ #else
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+ #define ESP_OPTIONS_PIE_SPEC \
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+ "%{!pie: %{!fpic:%{!fPIC:%{!fpie:%{!fPIE: %{!fno-pic:%{!fno-PIC:%{!fno-pie:%{!fno-PIE: \
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+ %{!shared: %{!static: %{!nostdlib: %{!nostartfiles:-fPIE}} } }}}} }}}} }}"
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+ #endif
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+
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+ /* This will add -pie if we don't have -pie -A -fno-pic -fno-PIC -fno-pie -fno-PIE -shared -static -r -nostdlib
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+ -nostartfiles */
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+ /* With ENABLE_CRTBEGINP we don't need to check for -static
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+ and we add -pie only to get the start and endfiles. -pie will not go to the linker. */
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+ #ifdef ENABLE_CRTBEGINP
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+ #define ESP_LINK_PIE_SPEC \
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+ "%{!pie:%{!A:%{!fno-pie:%{!fno-PIE:%{!fno-pic:%{!fno-PIC:%{!shared:%{!r: \
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+ %{!nostdlib:%{!nostartfiles:-pie}}}}}}}}}}"
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+ #else
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+ #define ESP_LINK_PIE_SPEC \
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+ "%{!pie:%{!A:%{!fno-pie:%{!fno-PIE:%{!fno-pic:%{!fno-PIC:%{!shared:%{!static:%{!r: \
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+ %{!nostdlib:%{!nostartfiles:-pie}}}}}}}}}}}"
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+ #endif
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+
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+ /* This will check if -pie is set when (-static) -pg -p -profile. If set it will make gcc print out
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+ "-pie and (static)|pg|p|profile are incompatible when linking" */
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+ /* With ENABLE_CRTBEGINP we don't need to check for -static */
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+ #ifdef ENABLE_CRTBEGINP
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+ #define ESP_LINK_PIE_CHECK_SPEC \
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+ "%{pie:%{pg|p|profile:%e-pie and -pg|p|profile are incompatible when linking}}"
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+ #else
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+ #define ESP_LINK_PIE_CHECK_SPEC \
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+ "%{pie:%{static|pg|p|profile:%e-pie and -static|pg|p|profile are incompatible when linking}}"
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+ #endif
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+
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+ /* We don't pass -pie to the linker when -static. */
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+ #ifdef ENABLE_CRTBEGINP
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+ #define LINK_PIE_SPEC "%{!static:%{pie:-pie}} %(esp_link)"
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+ #else
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+ #define LINK_PIE_SPEC "%{pie:-pie} %(esp_link)"
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+ #endif
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+
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+ #else
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+ #define ESP_OPTIONS_PIE_SPEC ""
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+ #define ESP_LINK_PIE_CHECK_SPEC ""
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+ #define ESP_LINK_PIE_SPEC ""
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+ #define LINK_PIE_SPEC "%{pie:-pie} %(esp_link)"
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+ #endif
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+
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+ /* We add extra spec name's to the EXTRA_SPECS list */
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+ #define ESP_EXTRA_SPECS \
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+ { "esp_cc1", ESP_CC1_SPEC }, \
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+ { "esp_cc1_pie", ESP_CC1_PIE_SPEC }, \
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+ { "esp_cc1_ssp", ESP_CC1_SSP_SPEC }, \
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+ { "esp_cc1_strict_overflow", ESP_CC1_STRICT_OVERFLOW_SPEC }, \
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+ { "esp_link", ESP_LINK_SPEC }, \
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+ { "esp_link_now", ESP_LINK_NOW_SPEC }, \
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+ { "esp_link_pie", ESP_LINK_PIE_SPEC }, \
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+ { "esp_link_pie_check", ESP_LINK_PIE_CHECK_SPEC }, \
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+ { "esp_driver_self", ESP_DRIVER_SELF_SPEC }, \
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+ { "esp_options_pie", ESP_OPTIONS_PIE_SPEC }, \
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+ { "esp_options_ssp", ESP_OPTIONS_SSP_SPEC }
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+
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+ static const char *cc1_spec = CC1_SPEC ESP_CC1_SPEC;
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+
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+#endif
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+#endif /* End GCC_ESP_H */
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