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From 3c4705bfdda45feb860a1f121631773e5fe8e53f Mon Sep 17 00:00:00 2001
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From: Shawn Anastasio <shawnanastasio@yahoo.com>
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Date: Thu, 9 Aug 2018 19:11:26 -0500
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Subject: [PATCH 1/4] sandbox/linux/bpf_dsl: Modify seccomp_macros to add
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support for ppc64
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---
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sandbox/linux/bpf_dsl/seccomp_macros.h | 43 ++++++++++++++++++++++++++
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1 file changed, 43 insertions(+)
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Index: chromium-120.0.6099.71/sandbox/linux/bpf_dsl/seccomp_macros.h
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===================================================================
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--- chromium-120.0.6099.71.orig/sandbox/linux/bpf_dsl/seccomp_macros.h
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+++ chromium-120.0.6099.71/sandbox/linux/bpf_dsl/seccomp_macros.h
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@@ -14,6 +14,9 @@
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#if defined(__mips__)
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// sys/user.h in eglibc misses size_t definition
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#include <stddef.h>
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+#elif defined(__powerpc64__)
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+// Manually define greg_t on ppc64
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+typedef unsigned long long greg_t;
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#endif
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#endif
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@@ -343,6 +346,51 @@ struct regs_struct {
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#define SECCOMP_PT_PARM4(_regs) (_regs).regs[3]
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#define SECCOMP_PT_PARM5(_regs) (_regs).regs[4]
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#define SECCOMP_PT_PARM6(_regs) (_regs).regs[5]
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+
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+#elif defined(__powerpc64__)
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+#include <asm/ptrace.h>
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+
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+typedef struct pt_regs regs_struct;
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+
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+#ifdef ARCH_CPU_LITTLE_ENDIAN
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+#define SECCOMP_ARCH AUDIT_ARCH_PPC64LE
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+#else
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+#define SECCOMP_ARCH AUDIT_ARCH_PPC64
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+#endif
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+
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+#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.regs->gpr[_reg])
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+
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+#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, 3)
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+#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, 0)
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+#define SECCOMP_IP(_ctx) (_ctx)->uc_mcontext.regs->nip
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+#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, 3)
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+#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, 4)
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+#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, 5)
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+#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, 6)
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+#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, 7)
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+#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, 8)
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+
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+#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
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+#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
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+#define SECCOMP_IP_MSB_IDX \
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+ (offsetof(struct arch_seccomp_data, instruction_pointer) + 4)
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+#define SECCOMP_IP_LSB_IDX \
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+ (offsetof(struct arch_seccomp_data, instruction_pointer) + 0)
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+#define SECCOMP_ARG_MSB_IDX(nr) \
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+ (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 4)
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+#define SECCOMP_ARG_LSB_IDX(nr) \
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+ (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 0)
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+
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+#define SECCOMP_PT_RESULT(_regs) (_regs).gpr[3]
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+#define SECCOMP_PT_SYSCALL(_regs) (_regs).gpr[0]
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+#define SECCOMP_PT_IP(_regs) (_regs).nip
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+#define SECCOMP_PT_PARM1(_regs) (_regs).gpr[3]
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+#define SECCOMP_PT_PARM2(_regs) (_regs).gpr[4]
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+#define SECCOMP_PT_PARM3(_regs) (_regs).gpr[5]
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+#define SECCOMP_PT_PARM4(_regs) (_regs).gpr[6]
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+#define SECCOMP_PT_PARM5(_regs) (_regs).gpr[7]
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+#define SECCOMP_PT_PARM6(_regs) (_regs).gpr[8]
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+
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#else
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#error Unsupported target platform
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